99 results on '"Takahiro Tokuda"'
Search Results
2. The Usefulness of the Modified Essential Frailty Toolset to Predict Late Bleeding Events after Transcatheter Aortic Valve Implantation
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Satoshi, Tsujimoto, Masanori, Yamamoto, Ai, Kagase, Takahiro, Tokuda, Yutaka, Koyama, Tetsuro, Shimura, Yuya, Adachi, Ryo, Yamaguchi, Toshiaki, Otsuka, Fumiaki, Yashima, Yusuke, Watanabe, Norio, Tada, Toru, Naganuma, Masahiro, Yamawaki, Futoshi, Yamanaka, Kazuki, Mizutani, Minoru, Tabata, Hiroshi, Ueno, Kensuke, Takagi, Shinichi, Shirai, and Kentaro, Hayashida
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Male ,Transcatheter Aortic Valve Replacement ,Treatment Outcome ,Frailty ,Risk Factors ,Aortic Valve ,Humans ,Female ,Hemorrhage ,Aortic Valve Stenosis ,Cardiology and Cardiovascular Medicine ,Hypoalbuminemia - Abstract
Frailty is strongly associated with poor short- and long-term prognoses in patients who undergo transcatheter aortic valve implantation (TAVI). However, limited data are available regarding the association between frailty and late bleeding events after TAVI. Of the 2,518 patients in the Japanese multicenter TAVI registry, 1371 patients with complete data on frailty parameters were analyzed. We developed a modified Essential Frailty Toolset (EFT) using 4 frailty parameters-gait speed, Mini-Mental State Examination (MMSE), anemia, and hypoalbuminemia-that are significant predictors of late bleeding events in this cohort. The predictive value of the modified EFT for late bleeding after TAVI was assessed in comparison with other clinical variables. Late bleeding events after TAVI occurred in 80 patients (5.8%). Gait speed, MMSE, anemia, and hypoalbuminemia were significantly associated with late bleeding. A modified EFT was developed to include these parameters, which were scored from 0 to 5 points comprising the following 4 items: gait speed (0:1.5 m/s, 1: 1.5 to 0.75 m/s, 2:0.75 m/s), cognition (1: MMSE18), anemia (1: hemoglobin13 g/100 ml in men or12 g/100 ml in women), and malnutrition (1: albumin3.5 g/100 ml). Multivariate Cox regression analysis revealed that the modified EFT was an independent predictor of late bleeding (adjusted hazard ratio 1.51, 95% confidence interval [CI] 1.19 to 1.92, p0.001) In conclusion, the modified EFT was found to be a significant predictive factor for late bleeding events after TAVI. Assessment of frailty is important to predict patients with high bleeding risk after TAVI.
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- 2022
3. Incidence, Timing, and Causes of Late Bleeding After TAVR in an Asian Cohort
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Masanori Yamamoto, Toshiaki Otsuka, Tetsuro Shimura, Ryo Yamaguchi, Yuya Adachi, Ai Kagase, Takahiro Tokuda, Satoshi Tsujimoto, Yutaka Koyama, Fumiaki Yashima, Norio Tada, Toru Naganuma, Masahiro Yamawaki, Futoshi Yamanaka, Shinichi Shirai, Kazuki Mizutani, Minoru Tabata, Hiroshi Ueno, Kensuke Takagi, Yusuke Watanabe, and Kentaro Hayashida
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Cardiology and Cardiovascular Medicine - Abstract
Data regarding the incidence, predictive factors, and clinical outcomes of post-transcatheter aortic valve replacement (TAVR) bleeding is limited in the Asian cohort.This study sought to assess the predictors and prognostic impact of post-TAVR late bleeding.This study used the Japanese multicenter registry data to analyze 2,518 patients (mean age: 84.3 ± 5.2 years) who underwent TAVR. Late bleeding was defined as any postdischarge bleeding events after TAVR. Baseline characteristics, predictive factors, and clinical outcomes including death and rehospitalization were assessed in patients with and without late bleeding events.The cumulative incidence rate of all and major late bleeding and ischemic stroke were 7.4%, 5.2%, and 3.4%, respectively, 3 years after TAVR. The independent predictive factors of late bleeding were low platelet count, high score (≥4) on the clinical frailty scale, and a New York Heart Association functional class III/IV. The cumulative mortality rates up to 3 years were significantly higher in patients with late bleeding than in those without bleeding (Late bleeding after TAVR was not a rare complication, and it significantly increased long-term mortality. It should be carefully managed, especially when it is predictable in the high-risk cohort, and efforts should be taken to reduce bleeding complications even after a successful procedure.
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- 2022
4. A novel angio-sketch-supported procedure during transcatheter aortic valve implantation using a navitor valve
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Yuki Kondo, Masanori Yamamoto, Mikan Kojima, Hiroto Nishio, Ai kagase, and Takahiro Tokuda
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Radiology, Nuclear Medicine and imaging ,General Medicine ,Cardiology and Cardiovascular Medicine - Published
- 2023
5. Combined Treatment With Hyperbaric Oxygen Therapy and Endovascular Therapy for Patients With Chronic Limb-Threatening Ischemia ― Study Protocol for the HOTFOOT Multicenter Randomized Controlled Trial ―
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Tetsuji Morishita, Shohei Hieda, Takashi Miwa, Yusuke Sato, Akira Nakano, Naoki Hayakawa, Takahiro Tokuda, Michinao Tan, Yoshiki Minegishi, Tsuyoshi Miyazawa, Taichi Hayashi, Kazushi Urasawa, Yutaka Dannoura, Yoshinori Shimooka, and Hiroyuki Ikeda
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Peripheral artery disease ,business.industry ,Ischemia ,Protocol Paper ,General Medicine ,medicine.disease ,Endovascular therapy ,law.invention ,Hyperbaric oxygen ,Combined treatment ,Randomized controlled trial ,law ,Hyperbaric oxygen therapy ,Anesthesia ,medicine ,Endovascular treatment ,Chronic limb-threatening ischemia ,business - Abstract
Background: Hyperbaric oxygen therapy (HBOT) is regarded as one of the therapeutic options added to standard care to improve lower-limb outcomes in patients with chronic limb-threatening ischemia (CLTI). However, the current guidelines specify that HBOT should not be offered instead of revascularization to prevent limb loss in CLTI patients. The aim of the HOTFOOT study is to examine the impact of HBOT on wound healing in CLTI patients after successful endovascular therapy (EVT). Methods and Results: The HOTFOOT study is a multicenter prospective randomized open blinded-endpoint trial that is to be conducted at 10 trial centers in Japan between February 2021 and February 2022. This study will enroll 140 patients with CLTI receiving successful EVT. Eligible participants will be allocated 1 : 1 to either the EVT+HBOT or EVT group; participants in the EVT+HBOT group will receive 30 HBOT sessions. The primary outcome is the time to complete wound healing over the 6-month follow-up. Secondary outcomes during the 6-month follow-up are the proportion of patients who achieved complete wound healing, freedom from major lower-limb amputation, amputation-free survival, and freedom from target lesion reintervention. Conclusions: This study is expects to assess whether HBOT, in combination with successful EVT, can improve lower-limb outcomes in CLTI patients.
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- 2021
6. External iliac artery pseudoaneurysm following treatment for arterio-ureteral fistula using a balloon-expandable stent-graft: A case report
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Itsuro Morishima, Kensuke Takagi, Takahiro Tokuda, Yasuhiro Morita, and Naoki Yoshioka
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medicine.medical_specialty ,Fistula ,medicine.medical_treatment ,R895-920 ,Graft migration ,Femoral artery ,Right Common Iliac Artery ,Arterio-ureteral fistula ,Sepsis ,Pseudoaneurysm ,Medical physics. Medical radiology. Nuclear medicine ,medicine.artery ,Medicine ,Radiology, Nuclear Medicine and imaging ,Stent-graft ,cardiovascular diseases ,business.industry ,Stent ,External iliac artery ,medicine.disease ,Surgery ,Ostium ,surgical procedures, operative ,Infection ,business - Abstract
Sepsis and bleeding can lead to life-threatening complications, such as stent-graft infection and pseudoaneurysm, after stent-graft implantation. An 83 year-old woman was admitted to our hospital for sepsis 14 months after treatment with a balloon-expandable stent-graft for an arterio-ureteral fistula (AUF) between the right external iliac artery and the right ureter. Blood cultures were positive for methicillin-resistant Staphylococcus aureus and Candida tropicalis. A giant infectious pseudoaneurysm (44 × 70 mm) at the distal edge of the stent-graft was suspected of having caused the sepsis. Although endovascular therapy (EVT) was planned to correct the pseudoaneurysm, the right iliac artery spontaneously became occluded from the ostium of the right common iliac artery to the common femoral artery 5 days after diagnosing the pseudoaneurysm; hence, EVT was not performed. Antibiotic administration was continued, and blood culture results were negative. Although EVT using a stent graft for AUFs is effective, data on the chronic phase outcomes are limited. Therefore, patients with AUFs treated using stent-grafts should be carefully followed up.
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- 2021
7. Successful retrieval of arterial wall fragment distal embolization using an endomyocardial bioptome after transfemoral transcatheter aortic valve replacement
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Takahiro Tokuda, Masanori Yamamoto, and Ai Kagase
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Cardiology and Cardiovascular Medicine - Published
- 2022
8. Successful Delivery of the Navitor Transcatheter Heart Valve Using an Expandable Sheath via a Heavily Calcified Iliac Artery Access Route
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Hiroto Nishio, Masanori Yamamoto, Masahiro Uehara, Ai Kagase, and Takahiro Tokuda
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General Medicine - Published
- 2023
9. Two-year clinical outcomes and predictors of restenosis following the use of polymer-coated paclitaxel-eluting stents or drug-coated balloons in patients with femoropopliteal artery disease
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Naoki, Yoshioka, Takahiro, Tokuda, Akio, Koyama, Takehiro, Yamada, Kiyotaka, Shimamura, Ryusuke, Nishikawa, Yasuhiro, Morita, and Itsuro, Morishima
- Abstract
We aimed to assess the clinical performance and risk factors for patency loss within 2 years following the use of polymer-coated paclitaxel-eluting stents (PC-PESs) and drug-coated balloons (DCBs) in patients with lower extremity artery disease. Multi-center registry data from 151 patients (65 and 86 treated with PC-PES and DCB, respectively) were retrospectively investigated. Two-year primary patency (PP) and clinically driven target lesion revascularization (CD-TLR) were evaluated using Kaplan-Meier analysis. Predictors of restenosis within 2 years of the procedures were analyzed using the random survival forest method. The consistent predictors of restenosis within 1 and 2 years were assessed and validated using Kaplan-Meier analysis. Two-year PP was 77.2 and 57.2% (log rank p = 0.047) and freedom from CD-TLR was 84.4 and 84.8% in the PC-PES and DCB groups, respectively (log rank p = 0.89). In the DCB group, most of the patients (n = 77, 89.5%) were treated with high-dose DCB. Consistent predictors of restenosis were lower vessel diameter and severity of Clinical Frailty Scale in the PC-PES group, and severity of peripheral artery calcification scoring system grade, severity of post dissection pattern, and smaller vessel diameter in the DCB group. The validation analysis revealed that patients with consistent predictors had significantly worse PP values than that of those without in the PC-PES (87.9% vs. 55.3%, log rank p = 0.003) and DCB groups (75.9% vs. 35.2%, log rank p = 0.001). The 2-year PP of DCBs was lower than that of PC-PESs. A smaller vessel diameter could predict restenosis in both devices. Vessel calcification and dissection should be considered when using DCB to ensure longer term patency.
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- 2022
10. Clinical Outcomes Based on High Bleeding Risk in Patients With Lower Extremity Peripheral Artery Disease Who Have Undergone Endovascular Therapy
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Naoki Yoshioka, Takahiro Tokuda, Akio Koyama, Takehiro Yamada, Kiyotaka Shimamura, Ryusuke Nishikawa, Yasuhiro Morita, and Itsuro Morishima
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Radiology, Nuclear Medicine and imaging ,Surgery ,Cardiology and Cardiovascular Medicine - Abstract
Purpose: Endovascular therapies (EVTs) for symptomatic lower extremity peripheral artery disease (PAD) are efficient and minimally invasive. However, patients with PAD tend to have high bleeding risk (HBR), and there are limited data regarding the HBR for patients with PAD after EVT. In this study, we investigated the prevalence and severity of HBR, as well as its association with clinical outcomes in the patients with PAD who underwent EVT. Materials and Methods: The Academic Research Consortium for High Bleeding Risk (ARC-HBR) criteria were applied to 732 consecutive patients with lower extremity PAD post-EVT to assess the prevalence of HBR, and its association with major bleeding events, all-cause mortality, and ischemic events. The ARC-HBR scores (1 point for each major criterion and 0.5 points for each minor criterion) were obtained and the patients were divided into four groups (score: 0–0.5; low risk, score: 1–1.5; moderate risk, score: 2–2.5; high risk, and score: ≥3; very high risk) according to the score. Major bleeding events were defined as Bleeding Academic Research Consortium type-3 or type-5 bleeding, and ischemic events were defined as the composite of myocardial infarction, ischemic stroke, and acute limb ischemia within 2 years. Results: High bleeding risk occurred in 78.8% of the patients. Major bleeding events, all-cause mortality, and ischemic events occurred in 9.7%, 18.7%, and 6.4% of the study cohort, respectively, within 2 years. During the follow-up period, major bleeding events significantly increased with the ARC-HBR score. The severity of the ARC-HBR score was significantly associated with an increased risk of major bleeding events (high risk: adjusted hazard ratio [HR] 5.62; 95% confidence interval [CI]: [1.28, 24.62]; p=0.022; very high risk: adjusted HR: 10.37; 95% CI: [2.32, 46.30]; p=0.002). All-cause mortality and ischemic events also significantly increased with higher ARC-HBR score. Conclusions: High bleeding risk patients with lower extremity PAD can be at a high risk of bleeding events, mortality, and ischemic events after EVT. The ARC-HBR criteria and its associated scores can successfully stratify HBR patients and assess the bleeding risk in patients with lower extremity PAD who undergo EVT. Clinical Impact Endovascular therapies (EVTs) for symptomatic lower extremity peripheral artery disease (PAD) are efficient and minimally invasive. However, patients with PAD tend to have high bleeding risk (HBR), and there are limited data regarding the HBR for patients with PAD after EVT. Post EVT, most of the patients with PAD were classified as having HBR using the Academic Research Consortium for HBR (ARC-HBR) criteria and the rate of bleeding events as well as mortality and ischemic events within 2 years increased as the ARC-HBR score increased in this retrospective study of 732 participants. HBR patients with PAD can be at high risk of not only bleeding events but also mortality and ischemic events in the mid-term. The ARC-HBR criteria and its associated scores can successfully stratify HBR patients and assess the bleeding risk in patients with PAD who underwent EVT.
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- 2023
11. Removal of Migrated Vascular Closure Device Plug Material From the Popliteal Artery Using the Bi-Directional Approach 'Push Balloon Into Vessel and Close Embolus From Retrograde Site (PINCER)' Technique: A Case Report
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Naoki Yoshioka, Yasuhiro Morita, Takahiro Tokuda, Takehiro Yamada, and Itsuro Morishima
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Surgery ,General Medicine ,Cardiology and Cardiovascular Medicine - Abstract
Vascular closure devices (VCDs) are widely used to achieve rapid hemostasis after percutaneous intervention via the common femoral artery (CFA), with well-established efficacy and safety. Although VCD-related artery occlusion is rare, it can be critical. A 72-year-old female underwent endovascular therapy (EVT) for stent occlusion in the left superficial femoral artery through a 7-Fr guiding sheath from the right CFA. After the procedure, an acute right popliteal artery (POP-A) occlusion, associated with the EXOSEAL VCD plug, occurred. The plug material was successfully removed using a bidirectional approach. The migration plug was blocked to prevent distal vessel migration and pushed gently to close the antegrade system, using an over-the-wire balloon from the retrograde site. We named this the “Push balloon INto vessel and Close Embolus from Retrograde site” (PINCER) technique. Finally, the plug was successfully removed using biopsy forceps. Acute limb ischemia (ALI) caused by EXOSEAL is a rare condition. Removal of the emboli by EVT is clinically significant because it is minimally invasive. However, it is sometimes difficult to remove the embolus using only antegrade approach; thus, the bidirectional approach using the PINCER technique can be effective in these situations.
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- 2023
12. Snare Technique Used to Pass a Navitor Transcatheter Heart Valve Through a Heavily Calcified Aortic Arch
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Ryotaku Kawahata, Masanori Yamamoto, Ai Kagase, and Takahiro Tokuda
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General Medicine - Published
- 2023
13. Long Extending Thrombus Formation Around a Transseptal Puncture Site After Transcatheter Edge-to-Edge Mitral Valve Repair
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Ai, Kagase, Masanori, Yamamoto, Mikan, Kojima, and Takahiro, Tokuda
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General Medicine - Published
- 2022
14. Successful Giant Thrombus Aspiration Using a Guide Cather in the Right Atrium Before Emergency Transcatheter Edge-to-Edge Mitral Valve Repair
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Masanori, Yamamoto, Ai, Kagase, Ryotaku, Kawabata, and Takahiro, Tokuda
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General Medicine - Published
- 2022
15. Validation of Global Limb Anatomical Staging System (GLASS) in patients with hemodialysis and Chronic Limb-Threatening Ischemia after endovascular treatment
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Yoriyasu Suzuki, Ryoji Koshida, Tatsuya Ito, Yasuhiro Oba, Hiroaki Matsuda, Takahiro Tokuda, Ai Kagase, and Akira Murata
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Male ,medicine.medical_specialty ,medicine.medical_treatment ,Ischemia ,030204 cardiovascular system & hematology ,Risk Assessment ,Severity of Illness Index ,Decision Support Techniques ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,Renal Dialysis ,Risk Factors ,Diabetes mellitus ,medicine ,Humans ,030212 general & internal medicine ,Stage (cooking) ,Aged ,Retrospective Studies ,Proportional hazards model ,business.industry ,Endovascular Procedures ,Vascular surgery ,Limb Salvage ,medicine.disease ,Surgery ,Cardiac surgery ,Femoral Artery ,Lower Extremity ,ROC Curve ,Chronic Disease ,Kidney Failure, Chronic ,Female ,Hemodialysis ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Abstract
Recently, Society for Vascular Surgery guideline recommends evaluating anatomic pattern with use of Global Limb Anatomic Staging System (GLASS) in Chronic Limb-Threatening Ischemia (CLTI) patients. The aim of this study is to validate GLASS stage into CLTI patients on hemodialysis (HD) and investigate the impact of GLASS stage to wound healing and amputation-free survival (AFS). Between April 2009 and March 2018, we performed EVT for 154 limbs in CLTI patients on HD. GLASS was defined as femoropopliteal (FP) and infrapopliteal (IP) segments separately graded (0–4), then combined into three GLASS stages for the limb (I–III). We divided them into three GLASS stages with using this system. We compared the clinical outcomes between three groups (GLASS I, GLASS II, and GLASS III). Patient characteristics were almost similar between the three groups. Lesion characteristics was more complex and the rate of success was lower in GLASS III. Cox regression multivariate analysis revealed that diabetes mellitus (HR 2.4, 95% CI 1.37–4.01, p
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- 2021
16. Successful bailout clipping for rare complication of anterior mitral leaflet dissection during transcatheter edge-to-edge mitral valve repair
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Ai Kagase, Masanori Yamamoto, and Takahiro Tokuda
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Cardiology and Cardiovascular Medicine - Published
- 2023
17. Institutional Volume and Initial Results for Endovascular Treatment for Chronic Occlusive Lower-Extremity Artery Disease: A Report From the Japanese Nationwide Registry
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Takahiro Tokuda, Mitsuyoshi Takahara, Osamu Iida, Shun Kohsaka, Yoshimitsu Soga, Yasuhiro Oba, Keisuke Hirano, Toshiro Shinke, Tetsuya Amano, and Yuji Ikari
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Radiology, Nuclear Medicine and imaging ,Surgery ,Cardiology and Cardiovascular Medicine - Abstract
Purpose: Chronic total occlusion (CTO) remains as a major target for endovascular treatment (EVT) in improving symptomatic lower-extremity artery disease (LEAD). However, despite the technical demand and learning curve for the procedure, volume-outcome relationship of EVT targeted for CTO in symptomatic LEAD remains unclear. Materials and Methods: Data were obtained from a nationwide registry for EVT procedures limited to the Japanese Association of Cardiovascular Intervention and Therapeutics between January 2018 and December 2020 from 660 cardiovascular centers in Japan. In total, 96 099 patients underwent EVT for symptomatic LEAD, and 41 900 (43.6%) underwent CTO-targeted EVTs during the study period. Institutional volume was classified into quartiles. The association of institutional volumes with short-term outcomes was explored using the generalized linear mixed model using a logit link function, in which, interinstitution variability was used as a random effect. Results: The median institutional volume for all EVT cases per quartile was 29, 68, 125, and 299 cases/year for the first, second, third, and fourth quartiles, respectively. With each model analysis, the adjusted odds ratios (ORs) for technical success were significantly lower in patients who underwent EVT in institutions within the first quartile (Conclusion: In contemporary Japanese EVT practice, a higher institutional volume but not operator volume was associated with a higher technical success rate and a lower procedural complication rate in patients with symptomatic LEAD involving CTO lesions. Clinical Impact EVT for CTO lesions is still challenging for clinicians because of difficulties of wire/devise crossing or high procedural complications rate. Our study demonstrated that a higher institutional volume but not operator volume was associated with a higher technical success rate and a lower procedural complication rate in patients with symptomatic LEAD involving CTO lesions. In contemporary Japanese practice, a higher institutional experience has better impacts on short-term clinical outcomes. Future research should determine the relationship between institutional volume and long-term clinical outcomes.
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- 2023
18. Vascular management during transcatheter aortic valve replacement
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Takahiro, Tokuda and Masanori, Yamamoto
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Transcatheter aortic valve replacement (TAVR), as an alternative to open heart surgery, has been established as the standard therapy for patients with severe aortic valve stenosis. Vascular access management, the first step in a TAVR procedure, should be managed properly. Moreover, the transfemoral and alternatives such as the transaxillary/subclavian, transcarotid, transapical, and transcaval approaches are considered access routes during TAVR. More than 90% of cases can be treated via the transfemoral approach in the current TAVR era, whereas other approaches should be considered in patients in whom the transfemoral approach is not suitable. Vascular complications regardless of access route differences are a specific issue of TAVR caused by the use of large sheaths. With the increased number of TAVR cases, we must manage vascular complications and decrease the morbidity and mortality rates associated with TAVR procedures. Thus, this study aimed to review the vascular complications during TAVR and summarize their prognosis, prevention, and adequate management.
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- 2022
19. The Impact of Femoropopliteal Artery Calcium Score after Endovascular Treatment
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Tatsuya Ito, Ryoji Koshida, Yasuhiro Oba, Yoriyasu Suzuki, Akira Murata, and Takahiro Tokuda
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Male ,medicine.medical_specialty ,Time Factors ,Computed Tomography Angiography ,medicine.medical_treatment ,chemistry.chemical_element ,030204 cardiovascular system & hematology ,Calcium ,Severity of Illness Index ,Amputation, Surgical ,030218 nuclear medicine & medical imaging ,Lesion ,Peripheral Arterial Disease ,03 medical and health sciences ,0302 clinical medicine ,Predictive Value of Tests ,Risk Factors ,Internal medicine ,medicine ,Humans ,Popliteal Artery ,Endovascular treatment ,Vascular Calcification ,Vascular Patency ,Aged ,Retrospective Studies ,Aged, 80 and over ,business.industry ,General Medicine ,Limb Salvage ,medicine.disease ,Femoral Artery ,Treatment Outcome ,medicine.anatomical_structure ,Amputation ,chemistry ,Cardiology ,Female ,Stents ,Surgery ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Angioplasty, Balloon ,Calcium score ,Kidney disease ,Calcification ,Artery - Abstract
The coronary artery calcium score is a widely known independent predictor of cardiac events. Tibial artery calcification had been reported as an amputation risk, but the femoropopliteal artery calcium score is rarely known.A retrospective analysis was performed using the data collected from the patients who underwent endovascular treatment for the femoropopliteal artery between January 2010 and December 2017. The femoropopliteal artery calcium scores on preprocedural computed tomography were calculated according to the Agatston definition. The mean value of total of femoropopliteal artery calcium scores was used to divide the scores into two groups. The prognostic value of the calcium score was analyzed based on primary patency, clinically driven target lesion revascularization, major amputation, and all-cause death.In total, 132 consecutive limbs that underwent successful endovascular intervention were analyzed in this study; 44 and 88 limbs were assigned to the high and low calcium score groups, respectively. There were no significant differences between the two groups in terms of patient and lesion characteristics, except for chronic kidney disease (7% vs. 25%, P 0.01), hemodialysis (80% vs. 25%, P 0.01), and coronary artery disease (73% vs. 53%, P = 0.03). Compared with the low calcium score group, the high calcium score group had a significantly higher rate of loss of primary patency and clinically driven target lesion revascularization at one year, based on the Kaplan-Meier curve (55% vs. 81%, 44% vs. 8%, both P 0.01). There were no significant differences between the two groups in terms of major amputation and death. Multivariate analysis revealed that hemodialysis [hazard ratio (HR): 1.9; 95% confidence interval (CI): 1.01-5.28; P = 0.04] runoff grade 0 (HR: 2.9; 95% CI: 1.02-10.9; P = 0.04), lesion length 200 mm (HR: 3.9; 95% CI: 1.1-13.7; P = 0.03), and calcium score per 100 increase (HR: 1.05; 95% CI: 1.02-1.08; P 0.01) were predictors of clinically driven target lesion revascularization. As per receiver operating characteristic analysis, the best cutoff value of target lesion calcium score for target lesion revascularization was 206.A high femoropopliteal artery calcium score might increase loss of patency and the risk for clinically driven target lesion revascularization.
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- 2020
20. Midterm Clinical Impacts of Biodegradable Polymer Everolimus-Eluting Stents Compared with Durable Polymer Everolimus-Eluting Stents: A 3-Year Propensity-Matched Study
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Yoriyasu Suzuki, Tatsuya Ito, Takahiro Tokuda, Hiroaki Matsuda, Yusuke Ochiumi, Ai Kagase, and Akira Murata
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Male ,Target lesion ,medicine.medical_specialty ,Article Subject ,Polymers ,medicine.medical_treatment ,Coronary Artery Disease ,Percutaneous Coronary Intervention ,Internal medicine ,Absorbable Implants ,medicine ,Clinical endpoint ,Diseases of the circulatory (Cardiovascular) system ,Humans ,Radiology, Nuclear Medicine and imaging ,Cumulative incidence ,Everolimus ,Myocardial infarction ,Propensity Score ,Aged ,Retrospective Studies ,business.industry ,Incidence (epidemiology) ,Percutaneous coronary intervention ,Drug-Eluting Stents ,Retrospective cohort study ,Middle Aged ,medicine.disease ,Treatment Outcome ,RC666-701 ,Propensity score matching ,Clinical Study ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business ,Immunosuppressive Agents - Abstract
Objectives. Our aim was to evaluate the safety and efficacy of biodegradable polymer everolimus-eluting stents (BP-EES) compared with durable polymer everolimus-eluting stents (DP-EES) in midterm. Background. There are few data about midterm clinical outcomes of BP-EES compared with DP-EES. Methods and Results. Between January 2016 and December 2017, 395 consecutive patients were treated with BP-EES and 391 consecutive patients were treated with DP-EES in Nagoya Heart Center. The primary endpoint was a 3-year cumulative incidence of target lesion failure (TLF) defined as cardiac death, target vessel myocardial infarction (MI), and clinical indicated target lesion revascularization (TLR). Moreover, clinical indicated target vessel revascularization (TVR) and definite stent thrombosis (ST) were also evaluated as the secondary endpoints. After propensity score matching, 327 patients were selected in each group. At 3 years, the cumulative incidence of TLF was 4.5% in the BP-EES group versus 6.5% in DP-EES (adjusted HR 0.67 (95% CI 0.33–1.30), log-rank P=0.23). Regarding the individual components of the TLF at 3 years, the cumulative incidence of target vessel MI was significantly lower in BP-EES than in DP-EES (0% versus 1.9%: adjusted HR 0.83 (95% CI 0.71–0.97), log-rank P=0.01), but there was no difference between BP-EES and DP-EES in the incidence of cardiac death and clinically indicated TLR. The cumulative 3-year incidence of definite ST was significantly lower in BP-EES than in DP-EES (0% versus 1.6%, log-rank P=0.02). Conclusions. There were no significant differences of TLF between BP-EES and DP-EES within 3 years. In this study, BP-EES seems to prevent definite ST and be safer than DP-EES in midterm.
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- 2020
21. Clinical outcomes and predictors of restenosis in patients with femoropopliteal artery disease treated using polymer-coated paclitaxel-eluting stents or drug-coated balloons
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Kiyotaka Shimamura, Ryusuke Nishikawa, Itsuro Morishima, Takehiro Yamada, Toyoaki Murohara, Kensuke Takagi, Akihito Tanaka, Hideki Ishii, Takahiro Tokuda, Naoki Yoshioka, Akio Koyama, and Yasuhiro Morita
- Subjects
medicine.medical_specialty ,Time Factors ,Paclitaxel ,Polymers ,Urology ,Lesion ,chemistry.chemical_compound ,Peripheral Arterial Disease ,Restenosis ,Coated Materials, Biocompatible ,medicine ,Humans ,Mass index ,Popliteal Artery ,Vascular Patency ,business.industry ,Drug-Eluting Stents ,Vascular surgery ,medicine.disease ,Cardiac surgery ,Femoral Artery ,medicine.anatomical_structure ,Treatment Outcome ,chemistry ,Female ,Stents ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Angioplasty, Balloon ,Calcification ,Artery - Abstract
Both polymer-coated paclitaxel-eluting stents (PC-PESs) and drug-coated balloons (DCBs) are used in conjunction with endovascular therapy (EVT) for the treatment of peripheral artery disease (PAD). We aimed to identify the risk factors for the loss of patency following the use of PC-PES and DCB in a real clinical setting. We assessed the multi-center registry data of 151 lesions from 151 patients who underwent EVT for symptomatic PAD in the superficial femoral and proximal popliteal arteries using PC-PES or DCB. One-year primary patency (PP) and clinically driven target lesion revascularization (CD-TLR) were evaluated using Kaplan–Meier analysis. The predictive risk factors for 1-year outcomes were analyzed using the random survival forest method. PC-PES and DCB were used in 65 (43.0%) and 86 (57.0%) cases, respectively. There were no significant differences in 1-year PP or freedom from CD-TLR between PC-PES and DCB. PP occurred in 85.4% and 80.2% of cases in the PC-PES and DCB groups, respectively (log-rank p = 0.65), while freedom from CD-TLR was noted in 92.7% and 94.1% of cases in the PC-PES and DCB groups, respectively (log-rank p = 0.73). In order of importance, a Clinical Frailty Scale score ≥ 6, female sex, lower proximal vessel diameter, lower body mass index, and younger and older age were identified as predictive risk factors of restenosis in the PC-PES group. Peripheral artery calcification scoring system grade of ≥ 2, post-dissection pattern ≥ D, lower proximal and distal vessel diameter, and lesion length ≥ 100 mm were identified as predictive risk factors of restenosis, in order of importance, in the DCB group. Both PC-PES and DCB were associated with favorable clinical outcomes within 1 year in patients with femoropopliteal artery disease. Furthermore, several factors that could predict restenosis within 1 year following the use of each device were detected.
- Published
- 2021
22. An External Iliac Artery Pseudoaneurysm Resulting From Stent Graft Migration
- Author
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Takahiro Tokuda, Akira Murata, Tatsuya Ito, Yoriyasu Suzuki, Hiroaki Matsuda, Ryoji Koshida, Ai Kagase, and Yasuhiro Oba
- Subjects
medicine.medical_specialty ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,Lesion ,03 medical and health sciences ,Pseudoaneurysm ,0302 clinical medicine ,medicine.artery ,Intravascular ultrasound ,Occlusion ,medicine ,cardiovascular diseases ,medicine.diagnostic_test ,business.industry ,External iliac artery ,Stent ,General Medicine ,equipment and supplies ,medicine.disease ,surgical procedures, operative ,030220 oncology & carcinogenesis ,Angiography ,Surgery ,Radiology ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,Claudication ,business - Abstract
The case of an 80-year-old male with claudication of his left foot who was referred to our hospital for evaluation and treatment. Computed tomography (CT) angiography revealed occlusion of left common and external iliac (EIA) arteries. Recanalization of the EIA lesion under intravascular ultrasound (IVUS) guidance and placement of 2 stent grafts was completed successfully. Nine months later, 27 × 29 mm pseudoaneurysm of the left EIA was identified that appeared to have developed secondary to migration of the original stent graft. A new stent graft was placed.
- Published
- 2020
23. Development and Evaluation of a Low-Energy Consumption Wearable Wrist Warming Device
- Author
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Naoya Isoyama, Takahiro Tokuda, Manami Oshima, Kizito Nkurikiyeyezu, Guillaume Lopez, and Kiyoshi Itao
- Subjects
Consumption (economics) ,Temperature control ,Computer science ,020209 energy ,Mechanical Engineering ,Wearable computer ,02 engineering and technology ,Wrist ,Industrial and Manufacturing Engineering ,Automotive engineering ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Low energy ,0202 electrical engineering, electronic engineering, information engineering ,medicine ,030217 neurology & neurosurgery - Abstract
Today in Japan, comfortable lifestyle and environment realized by abundant electric power is being questioned by energy consumption reduction policies called “cool biz” in summer, and “warm biz” in winter. One reason of these policies is the bad energy consumption efficiency of current air-conditioning systems that cool or warm indirectly human body. Several researches have been investigating the effect of direct human body cooling and warming. However, most proposed solutions focus on direct head or neck cooling, using ice to cool a water circulating system, such temperature during use cannot be controlled accurately nor adapted to user and environment conditions. Recently, a Japanese research team developed a portable system using Peltier elements that can both cool and warm neck. Though cooling was demonstrated to affect positively both physiological and psychological state in summer heat environment, in cold climate it could be confirmed for only neck warming but not feet and hands. In our objective of developing effective energy saving technology for direct temperature-conditioning of human body, and in order to reduce the discomfort caused by body chillness, we have proposed and developed a Peltier element based wrist-mounted wearable device that directly warms human body. A first experimental study showed how wrist warming rhythm affects hyperthermic sensation. Then, we verified whether the thermal sensation of the body, including the extremities, is improved by changing the position where the wrist is warmed.
- Published
- 2018
24. Comparison of ultrasound‐guided versus angiography‐guided endovascular treatment for femoropopliteal artery occlusive disease
- Author
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Takahiro Tokuda, Shinsuke Mori, Keisuke Hirano, Ryoji Koshida, Hiroaki Matsuda, Yasuhiro Oba, Akira Murata, Ai Kagase, Yoriyasu Suzuki, and Tatsuya Ito
- Subjects
medicine.medical_specialty ,medicine.medical_treatment ,Occlusive disease ,030204 cardiovascular system & hematology ,Revascularization ,Lesion ,Peripheral Arterial Disease ,03 medical and health sciences ,0302 clinical medicine ,Humans ,Medicine ,Popliteal Artery ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Endovascular treatment ,Ultrasonography, Interventional ,Vascular Patency ,Retrospective Studies ,medicine.diagnostic_test ,business.industry ,Endovascular Procedures ,Angiography ,General Medicine ,Ultrasound guided ,Femoral Artery ,Radiation exposure ,Treatment Outcome ,medicine.anatomical_structure ,Radiology ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Artery - Abstract
PURPOSE This study aimed to compare the efficacy of ultrasound-guided and angiography-guided intraluminal approach for femoropopliteal (FP) artery occlusive disease. METHODS A retrospective analysis was performed using the data collected regarding patients that underwent endovascular treatment (EVT) for FP artery occlusive disease between January 2010 and April 2018 at two centers. A total of 221 consecutive de novo lesions were analyzed according to the method of recanalization. Propensity score-matched analysis was performed to compare the clinical outcomes of recanalization methods for FP occlusive lesions. The prognostic value was analyzed based on the number of guidewires, wire cross time, distal puncture rate, radiation exposure, the amount of contrast media, primary patency, and clinically driven-target lesion revascularization (CD-TLR) at 1 year. RESULTS A total of 44 matched pairs of patients were analyzed after propensity score-matched analysis. The number of guidewires, distal puncture rate, wire passage time, radiation exposure, and the amount of contrast media were significantly lower in the ultrasound-guide group, with 3.4 vs. 4.7, 9.1% vs. 54.5%, 47 min vs. 83 min, 207 mGy vs. 821 mGy, 66 ml vs. 109 ml, respectively (p
- Published
- 2020
25. Late kidney injury after transcatheter aortic valve replacement
- Author
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Kazuki Mizutani, Norio Tada, Shinichi Shirai, Ai Kagase, Yusuke Watanabe, Ocean-Tavi Investigators, Takahiro Tokuda, Motoharu Araki, Toru Naganuma, Ryo Yamaguchi, Satoshi Tsujimoto, Yutaka Koyama, Fumiaki Yashima, Toshiaki Otsuka, Kentaro Hayashida, Tetsuro Shimura, Masanori Yamamoto, Yuya Adachi, Kensuke Takagi, Hiroshi Ueno, Futoshi Yamanaka, and Minoru Tabata
- Subjects
medicine.medical_specialty ,Time Factors ,Transcatheter aortic ,medicine.medical_treatment ,Renal function ,Coronary Artery Disease ,030204 cardiovascular system & hematology ,Kidney ,Patient Readmission ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Postoperative Complications ,Valve replacement ,Internal medicine ,medicine ,Kidney injury ,Humans ,030212 general & internal medicine ,Renal Insufficiency, Chronic ,Retrospective Studies ,Aged, 80 and over ,Heart Failure ,Creatinine ,business.industry ,Mortality rate ,Acute kidney injury ,Acute Kidney Injury ,medicine.disease ,Prognosis ,medicine.anatomical_structure ,chemistry ,Multivariate Analysis ,Cardiology ,Cardiology and Cardiovascular Medicine ,business - Abstract
Information on early to late-phase kidney damage in patients who underwent transcatheter aortic valve replacement (TAVR) is scarce. We aimed to identify the predictive factors for late kidney injury (LKI) at 1-year and patient prognosis beyond 1-year after TAVR.We retrospectively reviewed 1,705 patients' data from the Japanese TAVR multicenter registry. Acute kidney injury (AKI) and LKI, defined as an increase of at least 0.3 mg/dL in creatinine level, a relative 50% decrease in kidney function from baseline to 48 hours and 1-year, were evaluated. The patients were categorized into the 4 groups as AKI-/LKI- (n = 1.362), AKI+/LKI- (n = 95), AKI-/LKI+ (n = 199), and AKI+/LKI+ (n = 46).The cumulative 3-year mortality rates were significantly increased across the four groups (12.5%, 15.8%, 24.6%, 25.8%, P.001). Multivariate analysis revealed that chronic kidney disease, coronary artery disease, periprocedural AKI, and heart failure-related re-admission within 1-year were significantly associated with LKI. The Cox regression analysis revealed that AKI-/LKI+ and AKI+/LKI+ were independent predictors of increased late mortality beyond 1-year after TAVR (P = .001 and P = .01).LKI was influenced by adverse cardio-renal events and was associated with increased risks of late mortality beyond 1-year after TAVR.
- Published
- 2020
26. Clinical risk model for predicting 1-year mortality after transcatheter aortic valve replacement
- Author
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Kazuki Mizutani, Norio Tada, Kentaro Hayashida, Ryo Yamaguchi, Yusuke Watanabe, Futoshi Yamanaka, Takahiro Tokuda, Ai Kagase, Fumiaki Yashima, Yuya Adachi, Minoru Tabata, Hiroshi Ueno, Toshiaki Otsuka, Shun Watanabe, Masanori Yamamoto, Tetsuro Shimura, Motoharu Araki, Shinichi Shirai, Akihiro Higashimori, Yasunori Sato, Kensuke Takagi, and Toru Naganuma
- Subjects
medicine.medical_specialty ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,Logistic regression ,Valvular and Structural Heart Diseases ,Risk Assessment ,Original Studies ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,0302 clinical medicine ,Valve replacement ,OCEAN ,risk model ,Risk Factors ,Internal medicine ,Risk of mortality ,Medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Receiver operating characteristic ,business.industry ,General Medicine ,Aortic Valve Stenosis ,Confidence interval ,Cardiac surgery ,Treatment Outcome ,Aortic Valve ,Cardiology ,Population study ,Cardiology and Cardiovascular Medicine ,business ,Body mass index - Abstract
Objectives Estimating 1‐year life expectancy is an essential factor when evaluating appropriate indicators for transcatheter aortic valve replacement (TAVR). Background It is clinically useful in developing a reliable risk model for predicting 1‐year mortality after TAVR. Methods We evaluated 2,588 patients who underwent TAVR using data from the Optimized CathEter vAlvular iNtervention (OCEAN) Japanese multicenter registry from October 2013 to May 2017. The 1‐year clinical follow‐up was achieved by 99.5% of the entire population (n = 2,575). Patients were randomly divided into two cohorts: the derivation cohort (n = 1,931, 75% of the study population) and the validation cohort (n = 644). Considerable clinical variables including individual patient's comorbidities and frailty markers were used for predicting 1‐year mortality following TAVR. Results In the derivation cohort, a multivariate logistic regression analysis demonstrated that sex, body mass index, Clinical Frailty Scale, atrial fibrillation, peripheral artery disease, prior cardiac surgery, serum albumin, renal function as estimated glomerular filtration rate, and presence of pulmonary disease were independent predictors of 1‐year mortality after TAVR. Using these variables, a risk prediction model was constructed to estimate the 1‐year risk of mortality after TAVR. In the validation cohort, the risk prediction model revealed high discrimination ability and acceptable calibration with area under the curve of 0.763 (95% confidence interval, 0.728–0.795, p
- Published
- 2020
27. A mycotic aortic aneurysm treated by thoracic endovascular aneurysm repair
- Author
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Koshi Sawada, Yutaka Koyama, Yasuhiko Kawaguchi, Hideki Kitamura, Yasuhide Okawa, Mototsugu Tamaki, Takahiro Tokuda, and Kazuya Konakano
- Subjects
medicine.medical_specialty ,medicine.diagnostic_test ,medicine.drug_class ,business.industry ,medicine.medical_treatment ,Antibiotics ,Case Report ,Computed tomography ,030204 cardiovascular system & hematology ,Mycotic aneurysm ,medicine.disease ,Endovascular aneurysm repair ,030218 nuclear medicine & medical imaging ,Surgery ,03 medical and health sciences ,Aortic aneurysm ,0302 clinical medicine ,Aneurysm ,Antibiotic therapy ,cardiovascular system ,medicine ,Blood culture ,cardiovascular diseases ,business - Abstract
An 88-year-old man was admitted with general fatigue. Computed tomography (CT) showed a descending aortic aneurysm. The laboratory data indicated severe infection. Despite negative blood cultures, broad-spectrum intravenous antibiotic therapy was started. Though antibiotic therapy was continued for about 2 weeks, the aneurysm extended 20 mm. Thoracic endovascular aortic repair was performed, and antibiotic therapy was continued for 4 weeks after the procedure, followed by oral antibiotics for 1 year. CT showed regression of the aneurysm 15 months after reconstruction. Antibiotic therapy, preoperatively and postoperatively, is important for a mycotic aortic aneurysm.
- Published
- 2019
28. Importance of combined assessment of skeletal muscle mass and density by computed tomography in predicting clinical outcomes after transcatheter aortic valve replacement
- Author
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Kentaro Hayashida, Yusuke Watanabe, Kazuki Mizutani, Takahiro Tokuda, Norio Tada, Ocean-Tavi Investigators, Motoharu Araki, Masanori Yamamoto, Shinichi Shirai, Toru Naganuma, Akihiro Higashimori, Hiroshi Ueno, Ai Kagase, Futoshi Yamanaka, Minoru Tabata, Yutaka Koyama, Toshiaki Otsuka, and Kensuke Takagi
- Subjects
Male ,medicine.medical_specialty ,Sarcopenia ,Multivariate analysis ,Time Factors ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,Risk Assessment ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,0302 clinical medicine ,Valve replacement ,Japan ,Predictive Value of Tests ,Risk Factors ,Internal medicine ,Multidetector Computed Tomography ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Registries ,Muscle, Skeletal ,Geriatric Assessment ,Aged ,Retrospective Studies ,Aged, 80 and over ,business.industry ,Mortality rate ,Hazard ratio ,Skeletal muscle ,Aortic Valve Stenosis ,medicine.disease ,Confidence interval ,medicine.anatomical_structure ,Treatment Outcome ,Cohort ,Cardiology ,Body Composition ,Female ,Cardiology and Cardiovascular Medicine ,business - Abstract
Skeletal muscle mass (SMM) as calculated by computed tomography (CT) is a predictor of all-cause mortality after transcatheter aortic valve replacement (TAVR), but it remains unclear whether using CT-determined density of skeletal muscle has additive prognostic value. We utilized the Japanese multicenter registry data of 1375 patients who underwent CT prior to TAVR. Sarcopenia status was defined by the CT-derived SMM index (threshold: men, 55.4 cm2/m2; women, 38.9 cm2/m2). The threshold for high and low CT density was based on the median value of the entire cohort (men: 33.4 HU; women: 29.5 HU). Sarcopenia was observed in 802 patients (58.3%) overall. Patients were categorized into non-sarcopenia and high-CT density (n = 298), non-sarcopenia and low-CT density (n = 275), sarcopenia and high-CT density (n = 399), and sarcopenia and low-CT density (n = 403) groups, and procedural outcomes and mortality compared. The cumulative 3-year mortality rates in these groups were 18%, 27%, 24%, and 32%, respectively. Cox-regression multivariate analysis revealed that low-CT density (compared with high-CT density) and sarcopenia and low-CT density (compared with non-sarcopenia and high-CT density as reference) increased mortality after TAVR (hazard ratios [HR]: 1.35 and 1.43, 95% confidence intervals [Cis]: 1.06–1.72 and 1.00–2.08, p = 0.01, and 0.049, respectively). However, sarcopenia alone was not related to an increased risk of mortality (HR 1.30, 95% CI 0.99–1.69, p = 0.52). In conclusion, CT density-based skeletal muscle quality assessment combined with the SMM index improves prediction of adverse outcomes after TAVR.
- Published
- 2019
29. The Impact of Decline in Activities of Daily Living (ADL) of Patients With Critical Limb Ischemia (CLI) After Endovascular Treatment
- Author
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Motoharu Araki, Yosuke Honda, Yoshiaki Ito, Masahiro Yamawaki, Masakazu Tsutsumi, Norihiro Kobayashi, Keisuke Hirano, Shisuke Mori, Yasunari Sakamoto, and Takahiro Tokuda
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,Activities of daily living ,Multivariate analysis ,Critical Illness ,Health Status ,Ischemia ,Kaplan-Meier Estimate ,030204 cardiovascular system & hematology ,Amputation, Surgical ,Disease-Free Survival ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Internal medicine ,Activities of Daily Living ,Odds Ratio ,Humans ,Medicine ,Cumulative incidence ,030212 general & internal medicine ,Endovascular treatment ,Aged ,Proportional Hazards Models ,Retrospective Studies ,Aged, 80 and over ,Peripheral Vascular Diseases ,Wound Healing ,Chi-Square Distribution ,business.industry ,Endovascular Procedures ,General Medicine ,Odds ratio ,Critical limb ischemia ,Middle Aged ,medicine.disease ,Confidence interval ,Hospitalization ,Treatment Outcome ,Lower Extremity ,Multivariate Analysis ,Female ,Surgery ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background: Certain patients with critical limb ischemia (CLI) experience significant decline in activities of daily living (ADL) during hospitalization. The prognosis of decline in ADL during hospitalization remains unknown. Methods: A retrospective analysis was performed on collected data of patients with CLI treated by endovascular treatment between April 2007 and December 2015. We evaluated CLI in patients ADL at the time of hospitalization and after discharge using the Barthel index. We classified all patients into patients with decline in ADL and stable in ADL and compared clinical outcomes (cumulative incidence of wound healing, amputation-free survival at 1 year) between the 2 groups. Results: Two hundred and fifty-five consecutive patients with CLI (221 limbs), who underwent successful endovascular intervention, were enrolled in this study. Of all patients, 22 patients were classified into the decline group. The prevalence of wound, Ischemia, foot infection (WIfI) classification high grade was higher in the decline group (30.7% vs 63.6%; P < .01). The wound healing rates were worse in the decline group than in the stable group (40% vs 78% at 1 year; P < .01). The same trends were observed in the amputation-free survival (37% vs 78%; P < .01). After multivariate analysis, decline in ADL was an independent predictor of wound healing and amputation-free survival (odds ratio [OR]: 2.85, 95% confidence interval [CI]: 1.61-3.35, P < .01; OR: 2.46, 95% CI: 1.26-4.53, P = .01). Conclusions: Patients with CLI with decline in ADL during hospitalization were found to have a poor prognosis suggesting that a decline in ADL may affect the clinical outcomes.
- Published
- 2018
30. Refractory balloon deflation phenomenon caused by the twisted balloon lumen during transcatheter aortic valve implantation
- Author
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Takahiro Tokuda, Tokuya Sakakura, Ai Kagase, and Masanori Yamamoto
- Subjects
Balloon Valvuloplasty ,medicine.medical_specialty ,medicine.diagnostic_test ,Transcatheter aortic ,business.industry ,Lumen (anatomy) ,Interventional radiology ,Aortic Valve Stenosis ,General Medicine ,Prosthesis Design ,Balloon ,Surgery ,Transcatheter Aortic Valve Replacement ,Treatment Outcome ,Aortic Valve ,Heart Valve Prosthesis ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Cardiology and Cardiovascular Medicine ,business - Published
- 2020
31. Atmospheric behaviors of particulate-bound polycyclic aromatic hydrocarbons and nitropolycyclic aromatic hydrocarbons in Beijing, China from 2004 to 2010
- Author
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Takahiro Tokuda, Lixia Zhao, Hiroshi Morisaki, Kazuichi Hayakawa, Takayuki Kameda, Ning Tang, Jin-Ming Lin, Genki Suzuki, Xiaoyang Yang, and Akira Toriba
- Subjects
Atmospheric Science ,010504 meteorology & atmospheric sciences ,Heating season ,Air pollution ,Source control measure ,Coal combustion products ,010501 environmental sciences ,Particulates ,medicine.disease_cause ,01 natural sciences ,PAHs ,Beijing ,Environmental chemistry ,medicine ,Environmental science ,Relative humidity ,NPAHs ,0105 earth and related environmental sciences ,General Environmental Science - Abstract
Airborne particulates were collected at an urban site (site 1) from 2004 to 2010 and at a suburban site (site 2) in 2010 in Beijing. Nine polycyclic aromatic hydrocarbons (PAHs) and five nitropolycyclic aromatic hydrocarbons (NPAHs) in the airborne particulates were determined by HPLC with fluorescence and chemiluminescence detection, respectively. The concentrations of PAHs and NPAHs were higher in heating season than in non-heating season at the two sites. Both the concentrations of PAHs and NPAHs decreased in the non-heating season but only the concentrations of NPAHs decreased in heating season at site 1, from 2004 to 2010. These findings suggest that source control measures implemented by the city of Beijing helped to reduce air pollution in Beijing. The concentrations of PAHs increased at site 1 in 2010, possibly because of the transport of emissions from windward other areas, such as Shanxi province. Several diagnostic ratios of PAHs and NPAHs showed that the different sources contributed to Beijing's air pollution, although coal combustion was the main source in the heating season and vehicle emission was the main source in the non-heating season. An analysis of physical parameters at Beijing showed that high wind speed can remove atmospheric PAHs and NPAHs in the heating season and that high relative humidity can remove them in the non-heating season. © 2017 Elsevier Ltd, Embargo Period 12 months
- Published
- 2017
32. Prediction of the Technical Success of Endovascular Therapy in Patients with Critical Limb Threatening Ischaemia Using the Global Limb Anatomical Staging System
- Author
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Ryoji Koshida, Takahiro Tokuda, Yasuhiro Oba, Akira Murata, Tatsuya Ito, and Yoriyasu Suzuki
- Subjects
Male ,medicine.medical_specialty ,Technical success ,Ischemia ,030204 cardiovascular system & hematology ,030230 surgery ,Severity of Illness Index ,Peripheral Arterial Disease ,03 medical and health sciences ,Postoperative Complications ,0302 clinical medicine ,Humans ,Medicine ,In patient ,Derivation ,Stage (cooking) ,Staging system ,Aged ,Retrospective Studies ,Aged, 80 and over ,Receiver operating characteristic ,business.industry ,Endovascular Procedures ,Reproducibility of Results ,Retrospective cohort study ,Middle Aged ,Limb Salvage ,medicine.disease ,Treatment Outcome ,Lower Extremity ,ROC Curve ,Female ,Surgery ,Radiology ,business ,Cardiology and Cardiovascular Medicine - Abstract
Objective This study aimed to determine the clinical impact of the Global Limb Anatomical Staging System (GLASS) and develop a model to determine the grade of difficulty for target artery path (TAP) using GLASS stage. Methods This was a single centre retrospective study. Endovascular treatment (EVT) was performed for 400 lesions in 257 patients with critical limb threatening ischaemia (CLTI) between April 2009 and March 2018. All lesions were divided into three groups (GLASS Ⅰ, Ⅱ, and Ⅲ), which were compared in terms of patient characteristics, lesion characteristics, technical success, and procedural complications. All observations were then randomly assigned to the derivation set or validation set at a ratio of 2:1 (derivation set: 166 patients; validation set: 91 patients). Predictors of technical success for TAP were identified by multivariable analysis. Each predictor was assigned a score based on its regression coefficient, and the total score was calculated. This value was used to categorise all lesions into the following four groups: low (score 0), intermediate (score 1), difficult (score 2), and very difficult (score ≥ 3). Results No significant differences in patient characteristics were observed between the three GLASS groups. In GLASS Ⅲ group, anatomic/limb severity and procedural complications were observed frequently, and the technical success rate was lower than that in the other groups. Through multivariable analysis, absence of pedal modifier (P)0 or P1, GLASS Ⅲ, total occlusion, and severe calcification predicted technical failure. The four groups stratified according to GLASS score demonstrated stepwise and highly reproducible difference in the probability of technical success for TAP. The area under the receiver operating characteristic (ROC) curve was 0.95 in the development group and 0.93 in the validation sample. Conclusion In GLASS Ⅲ, anatomic/limb severity was more complex and procedural complications were more frequent. The GLASS scoring system reliably predicts the technical success of de novo TAP in patients with CLTI.
- Published
- 2020
33. Ability of Fractional Flow Reserve to Predict Restenosis After Superficial Femoral Artery Stenting
- Author
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Yohsuke Honda, Motoharu Araki, Hideyuki Takimura, Kenji Makino, Takahiro Tokuda, Masahiro Yamawaki, Tsuyoshi Sakai, Shigemitsu Shirai, Keisuke Hirano, Takuro Takama, Masakazu Tsutsumi, Norihiro Kobayashi, Yasunari Sakamoto, Yoshiaki Ito, and Shinsuke Mori
- Subjects
Male ,medicine.medical_specialty ,medicine.medical_treatment ,Fractional flow reserve ,030204 cardiovascular system & hematology ,Peripheral Arterial Disease ,03 medical and health sciences ,0302 clinical medicine ,Restenosis ,Predictive Value of Tests ,Internal medicine ,Angioplasty ,Occlusion ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Prospective Studies ,030212 general & internal medicine ,Aged ,Aged, 80 and over ,Receiver operating characteristic ,Superficial femoral artery ,business.industry ,medicine.disease ,Femoral Artery ,Stenosis ,Treatment Outcome ,Blood pressure ,ROC Curve ,Cardiology ,Stents ,Surgery ,Cardiology and Cardiovascular Medicine ,business - Abstract
Purpose: To evaluate the clinical efficacy of poststenting fractional flow reserve (FFR) in terms of predicting restenosis in superficial femoral artery (SFA) disease. Methods: This prospective, single-center, nonrandomized study enrolled 48 patients (mean age 76±9 years; 38 men) with 51 SFA lesions from July 2013 to June 2014. Mean FFR (distal mean pressure/proximal mean pressure) and systolic FFR (distal systolic pressure/proximal systolic pressure) were calculated, and the relationship between these FFR values and restenosis at 12 months was investigated using receiver operating characteristic (ROC) curve analysis. Results: Poststenting FFR was significantly lower in the restenosis group (poststenting mean FFR 0.85±0.07 vs 0.93±0.05, p=0.001; poststenting systolic FFR 0.76±0.14 vs 0.87±0.08, p=0.015). The area under the ROC curve for restenosis in poststenting mean FFR was higher, but not statistically significant, than that in poststenting systolic FFR (0.84 vs 0.74, p=0.08). The best poststenting mean FFR cutoff value for predicting restenosis was 0.92 (sensitivity 0.64, specificity 0.91). The 4.5% restenosis rate at 12 months in the high (>0.92) poststenting mean FFR group was significantly lower (35.7%, p=0.008) than in the low (≤0.92) poststenting mean FFR group. Conclusion: Poststenting mean FFR is useful for predicting restenosis in SFA disease.
- Published
- 2016
34. Comparison of first- and second-generation drug-eluting stent efficacies for treating left main and/or three-vessel disease: a propensity matched study
- Author
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Toshiya Muramatsu, Hideyuki Takimura, Motoharu Araki, Shigemitsu Shirai, Kenji Makino, Takashi Maruyama, Yasunari Sakamoto, Yoshiaki Ito, Hiroya Takafuji, Keisuke Hirano, Takahiro Tokuda, Tsuyoshi Sakai, Yohsuke Honda, Shinsuke Mori, Takuro Takama, Norihiro Kobayashi, Masakazu Tsutsumi, and Masahiro Yamawaki
- Subjects
Male ,medicine.medical_specialty ,Pathology ,Time Factors ,medicine.medical_treatment ,Coronary Artery Disease ,Kaplan-Meier Estimate ,030204 cardiovascular system & hematology ,Prosthesis Design ,Coronary artery disease ,03 medical and health sciences ,Percutaneous Coronary Intervention ,0302 clinical medicine ,Risk Factors ,Internal medicine ,medicine ,Humans ,cardiovascular diseases ,030212 general & internal medicine ,Propensity Score ,Aged ,Proportional Hazards Models ,Retrospective Studies ,Aged, 80 and over ,business.industry ,Stent ,Percutaneous coronary intervention ,Drug-Eluting Stents ,Middle Aged ,Vascular surgery ,medicine.disease ,Cardiac surgery ,Logistic Models ,Treatment Outcome ,Drug-eluting stent ,Multivariate Analysis ,Propensity score matching ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business ,Mace - Abstract
The efficacy of second-generation drug-eluting stent (DES) for the treatment of left main disease (LM) and/or three vessel disease (3VD) remains unclear. We compared 2-year outcomes of second- versus first -generation DES implantation among patients with LM and/or 3VD and to assess the differential of risk by complexity of coronary artery disease using synergy between percutaneous coronary intervention with taxus and cardiac surgery (SYNTAX) scores. Between April 2007 and December 2012, 341 patients with LM and/or 3VD were treated by percutaneous coronary intervention; 154 with first-generation DES and 137 with second-generation DES. After propensity matching, 101 patients remained in each group. The rate of target lesion revascularization (TLR) and major adverse cardiac event (MACE) were compared. TLR and MACE at 2 years were more common in the first- compared with second-generation DES group (TLR 19.8 vs. 8.9 %; p = 0.016, MACE 24.8 vs. 10.9 %; p = 0.008). In patients with low (0-22) and intermediate (23-32) SYNTAX scores, TLR and MACE tended to occur more often with first-generation DES group. In patients with high SYNTAX scores (≧33), TLR and MACE were significantly more common with first-generation DES group (TLR 29.0 vs. 11.1 %; p = 0.035, MACE 35.5 vs. 13.9 %; p = 0.034). Compared with first-generation DES, second-generation DES proved beneficial in reducing risk of TLR and MACE in patients with LM and/or 3VD, particularly among those with high SYNTAX scores (≧33).
- Published
- 2016
35. Risk Factors and Clinical Impacts of Peri-Stent Contrast Staining After Second-Generation Drug-Eluting Stent Implantation
- Author
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Masahiro Yamawaki, Yoshiaki Ito, Motoharu Araki, Yasunari Sakamoto, Hideyuki Takimura, Keisuke Hirano, Shinsuke Mori, Takahiro Tokuda, and Norihiro Kobayashi
- Subjects
medicine.medical_specialty ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,Coronary artery disease ,03 medical and health sciences ,0302 clinical medicine ,stomatognathic system ,medicine.artery ,medicine ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,medicine.diagnostic_test ,business.industry ,Stent ,Percutaneous coronary intervention ,Retrospective cohort study ,Odds ratio ,medicine.disease ,eye diseases ,Surgery ,stomatognathic diseases ,Drug-eluting stent ,Right coronary artery ,Angiography ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background Peri-stent contrast staining (PSS) after sirolimus-eluting stent implantation is associated with target lesion revascularization (TLR) and very late stent thrombosis. However, the risk factors and clinical sequelae of PSS after second-generation DES implantation remain unclear. Methods and Results This study comprised 2,090 patients with 2,883 lesions treated with second-generation DES from April 2009 to February 2013. Angiographic findings and clinical outcomes were compared between PSS and non-PSS groups. Follow-up angiography was available for 2,411 lesions. PSS was observed in 23 lesions: 4 in biolimus-eluting stents, 4 in zotarolimus-eluting stents (ZES), and 15 in everolimus-eluting stents (EES). Right coronary artery lesions, chronic total occlusion (CTO), and lesions with severe angulation (>90°) were more frequent in the PSS group compared with the non-PSS group. Lesions were longer and the cumulative TLR incidence at 3 years was higher in the PSS group than those in the non-PSS group (27.9 mm vs. 19.4 mm, P
- Published
- 2016
36. Prognostic value of objective nutritional status after transcatheter aortic valve replacement
- Author
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Takahiro Tokuda, Makino Kenji, Yohsuke Honda, Tsuyoshi Sakai, Shirai Shigemitsu, Yasunari Sakamoto, Yoshiaki Ito, Norihiro Kobayashi, Keisuke Hirano, Masahiro Yamawaki, Motoharu Araki, Shinsuke Mori, and Masakazu Tsutumi
- Subjects
medicine.medical_specialty ,Transcatheter aortic ,medicine.medical_treatment ,Nutritional Status ,030204 cardiovascular system & hematology ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,0302 clinical medicine ,Valve replacement ,Internal medicine ,Atrial Fibrillation ,medicine ,Clinical endpoint ,Humans ,Low body mass index ,030212 general & internal medicine ,Aged ,Aged, 80 and over ,Frailty ,business.industry ,Malnutrition ,Nutritional status ,medicine.disease ,Prognosis ,Cardiology ,Cardiology and Cardiovascular Medicine ,business ,Clinical risk factor - Abstract
Background This study aimed to elucidate the prognostic value of objective nutritional status after transcatheter aortic valve replacement (TAVR). Methods This study enrolled 150 consecutive patients who underwent TAVR between February 2014 and March 2017. Nutritional status was assessed using the Controlling Nutritional Status (CONUT) score before TAVR. Patients were divided into a high CONUT score (malnutrition status >4 points, n = 30) or low CONUT score (normal nutritional status 1–4 points, n = 120) group. The primary endpoint was mortality within 1-year post-TAVR. Results Patients in the high CONUT group were characterized by low body mass index (kg/m2) (20.3 ± 2.4 vs. 22.8 ± 3.5, p Conclusions Objective malnutrition status was predictive of mortality post-TAVR and provided complementary prognostic information to the CFS. Thus, objective nutritional status may refine the clinical risk stratification of patients who undergo TAVR.
- Published
- 2018
37. Differences between first-generation and second-generation drug-eluting stent regarding in-stent neoatherosclerosis characteristics: an optical coherence tomography analysis
- Author
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Keisuke Hirano, Norihiro Kobayashi, Masaru Obokata, Yohsuke Honda, Kenji Makino, Takahiro Tokuda, Tsuyoshi Sakai, Shinsuke Mori, Yoshiaki Ito, Yasunari Sakamoto, Shigemitsu Shirai, Masakazu Tsutsumi, Motoharu Araki, Masahiro Yamawaki, and Masahiro Nauchi
- Subjects
Neointima ,Male ,Reoperation ,medicine.medical_treatment ,030204 cardiovascular system & hematology ,Coronary Restenosis ,03 medical and health sciences ,0302 clinical medicine ,Percutaneous Coronary Intervention ,Optical coherence tomography ,Recurrence ,Medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Vascular Calcification ,Aged ,Retrospective Studies ,Aged, 80 and over ,medicine.diagnostic_test ,business.industry ,Fibrous cap ,Optical Imaging ,Percutaneous coronary intervention ,Stent ,Drug-Eluting Stents ,Middle Aged ,medicine.disease ,Atherosclerosis ,Coronary Vessels ,First generation ,medicine.anatomical_structure ,Drug-eluting stent ,Female ,Cardiology and Cardiovascular Medicine ,business ,Nuclear medicine ,Tomography, Optical Coherence ,Calcification - Abstract
We compared first-generation and second-generation drug-eluting stent (DES) with respect to neoatherosclerosis using optical coherence tomography or optical frequency domain imaging. In-stent restenoses in 102 first-generation and 114 second-generation DES were retrospectively assessed. Neoatherosclerosis, which was defined as the presence of lipid-laden neointima or calcification inside a stent, was observed in 33 (27.2%) and 31 (32.4%) lesions in the first-generation and second-generation DES respectively. In the first-generation DES group, the lipid length was significantly longer (5.5 ± 3.8 vs. 3.1 ± 2.1 mm, P = 0.0007), the lipid arc was significantly larger (324 ± 70° vs. 250 ± 94°, P = 0.002), the prevalence of a 360° lipid arc was significantly greater (58 vs. 31%, P = 0.03), and the fibrous cap was significantly thinner (153 ± 85 vs. 211 ± 95 µm, P = 0.02) compared with those in the second-generation DES group. These differences remained significant after adjusting for the age of the stent (lipid length: P
- Published
- 2018
38. Comparison of 3-year clinical outcomes after endovascular therapy for aortoiliac artery occlusive disease between patients with and without hemodialysis: Subanalysis of the REAL-AI registry
- Author
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Takahiro Tokuda, Kenji Suzuki, Daizo Kawasaki, Daisuke Kamoi, Keisuke Hirano, Yasutaka Yamauchi, Junichi Tazaki, Yoshimitsu Soga, and Osamu Iida
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,Occlusive disease ,Aortic Diseases ,Arterial Occlusive Diseases ,030204 cardiovascular system & hematology ,Kidney ,Endovascular therapy ,Iliac Artery ,03 medical and health sciences ,0302 clinical medicine ,Japan ,Renal Dialysis ,Risk Factors ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Registries ,Endovascular treatment ,Survival rate ,Vascular Patency ,Aged ,Retrospective Studies ,Aged, 80 and over ,business.industry ,Significant difference ,Endovascular Procedures ,General Medicine ,Middle Aged ,Surgery ,medicine.anatomical_structure ,Treatment Outcome ,Cohort ,Female ,Kidney Diseases ,Hemodialysis ,Cardiology and Cardiovascular Medicine ,business ,Artery ,Glomerular Filtration Rate - Abstract
Purpose The impact of hemodialysis (HD) on aortoiliac (AI) occlusive lesions remains unknown. Here, we report the 3-year clinical outcomes of endovascular treatment (EVT) for AI occlusive lesions in propensity-matched populations of patients who did and did not undergo HD. Methods The cohort of this large-scale, multicenter, retrospective registry study included 574 consecutive patients with AI occlusive disease. Propensity score-matched analysis was performed to compare AI occlusive lesions between patients who did and did not undergo HD. The endpoints were primary patency, assisted primary patency, and secondary patency as well as overall survival and major adverse limb events (MALEs). Results A total of 57 matched pairs of patients who did and did not undergo HD were analyzed after propensity score-matched analysis. No significant difference was observed in primary patency, assisted primary patency, secondary patency, and MALEs at 3 years. The survival rate was significantly lower in the HD group than in the without-HD group (68% vs. 93%, P = 0.03). Conclusions Although the survival rate of HD patients was poor, the results of EVT for AI occlusive lesions were reasonable in these patients.
- Published
- 2018
39. Impact of ultra-long second-generation drug-eluting stent implantation
- Author
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Yohsuke Honda, Yoshiaki Ito, Norihiro Kobayashi, Shinsuke Mouri, Masahiro Yamawaki, Toshiya Muramatsu, Motoharu Araki, Takuro Takama, Takahiro Tokuda, Yasunari Sakamoto, Tsuyoshi Sakai, Kenji Makino, Hiroya Takafuji, Masakazu Tsutumi, Keisuke Hirano, and Hideyuki Takimura
- Subjects
Target lesion ,medicine.medical_specialty ,Proportional hazards model ,business.industry ,medicine.medical_treatment ,General Medicine ,030204 cardiovascular system & hematology ,Surgery ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,Drug-eluting stent ,Internal medicine ,Right coronary artery ,medicine.artery ,Clinical endpoint ,medicine ,Cardiology ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Mace ,Target lesion revascularization - Abstract
Objectives This study investigated the safety and prognosis of ultra-long second DES (UL-2nd DES) implantation in real-world practice. Background Long stenting is a widely known predictor of stent thrombosis (ST) or target lesion revascularization (TLR) in first-generation drug-eluting stents (DES). Methods Participants were 1,669 patients (2,763 lesions) who had undergone successful second DES implantation; they were assigned to one of three groups: ultra-long 2nd DES (UL-DES; >50 mm, 166 patients, 259 lesions), long second DES (L-DES; 20–50 mm, 758 patients, 1,212 lesions), or short second DES (S-DES
- Published
- 2015
40. Vascular Elastography: A Novel Method to Characterize Occluded Lower Limb Arteries Prior to Endovascular Therapy
- Author
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Takahiro Tokuda, Tsuyoshi Sakai, Hideyuki Takimura, Hiroshi Ishimori, Tamon Kato, Masahiro Yamawaki, Masatsugu Nakano, Keisuke Hirano, Takuro Takama, Motoharu Araki, Yasunari Sakamoto, Reiko Tsukahara, Norihiro Kobayashi, Yoshiaki Ito, Toshiya Muramatsu, and Ai Ishii
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,Constriction, Pathologic ,Endovascular therapy ,Lower limb ,Lesion ,Peripheral Arterial Disease ,Vascular Stiffness ,Japan ,Predictive Value of Tests ,medicine.artery ,medicine ,Humans ,Lesion group ,Popliteal Artery ,Radiology, Nuclear Medicine and imaging ,Thrombus ,Endovascular treatment ,Vascular Calcification ,Aged ,Retrospective Studies ,Aged, 80 and over ,medicine.diagnostic_test ,business.industry ,Ultrasonography, Doppler ,Equipment Design ,Middle Aged ,medicine.disease ,Plaque, Atherosclerotic ,Popliteal artery ,Femoral Artery ,Treatment Outcome ,Lower Extremity ,Chronic Disease ,Elasticity Imaging Techniques ,Female ,Stents ,Surgery ,Radiology ,Elastography ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Angioplasty, Balloon ,Vascular Access Devices - Abstract
To examine the effectiveness of vascular elastography (VE) for the assessment of totally occluded lower limb arteries prior to endovascular treatment (EVT).Of 812 consecutive patients who underwent EVT between April 2010 and April 2012, VE was used to evaluate the hardness of chronic total occlusions of the femoropopliteal segment prior to EVT in 65 consecutive patients (48 men; mean 73.9 years, range 63-86). Elastograms of the CTOs proximally and distally were scored using a 5-point scale, and outcomes in limbs with hard lesions (VE score 0-2) were compared to those with soft lesions (VE score 3-4) according to lesion length. The interventionists who performed the endovascular procedures were not informed of the VE score results.CTO characteristics could be evaluated in all cases. A VE score ≤2 was found in 14 of the 23 lesions150 mm in length. A flexible guidewire was sufficient for recanalization in more of the soft lesions than in the hard lesions [6/9 vs. 2/14, respectively]. In 39 lesions150 mm, a VE score of 3 was recorded in most lesions proximally, while lesions distally were hard in many cases (VE score 1 or 2). A flexible guidewire alone was sufficient in many soft CTOs (8/13, p0.01). In 16 cases, hard calcified plaque was indicated by difficulty in penetrating the lesion even with a stiff guidewire; all these cases had a VE score of 1 or 2. A retrograde approach was required only in hard CTOs (p0.01). The procedure time was significantly longer for the hard lesion group (152.9±63.2 vs. 87.0±29.8 minutes, p=0.001). In 11 in-stent occlusions, only VE scores of 3 (n=4) or 4 (n=7) were recorded, indicating soft thrombus, which was aspirated under distal protection in 7 cases.VE may be a useful method for determining the hardness of CTO lesions noninvasively before endovascular therapy, providing information that can help plan the procedure.
- Published
- 2014
41. Optical frequency-domain imaging findings to predict good stent expansion after rotational atherectomy for severely calcified coronary lesions
- Author
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Yoshiaki Ito, Motoharu Araki, Masahiro Yamawaki, Shinsuke Mori, Norihiro Kobayashi, Masahiro Nauchi, Masakazu Tsutsumi, Takahiro Tokuda, Tsuyoshi Sakai, Yohsuke Honda, Keisuke Hirano, Shigemitsu Shirai, Kenji Makino, and Yasunari Sakamoto
- Subjects
Atherectomy, Coronary ,Male ,medicine.medical_specialty ,medicine.medical_treatment ,Coronary Artery Disease ,030204 cardiovascular system & hematology ,Rotational atherectomy ,Significant negative correlation ,Coronary Angiography ,03 medical and health sciences ,0302 clinical medicine ,Percutaneous Coronary Intervention ,Optical frequencies ,Medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,cardiovascular diseases ,030212 general & internal medicine ,Prospective Studies ,Vascular Calcification ,Cardiac imaging ,Aged ,Aged, 80 and over ,business.industry ,Endovascular Procedures ,Stent ,equipment and supplies ,medicine.disease ,Domain imaging ,Treatment Outcome ,Female ,Stents ,Radiology ,Cardiology and Cardiovascular Medicine ,business ,Tomography, Optical Coherence ,Calcification - Abstract
We aimed to evaluate the optical frequency-domain imaging (OFDI) findings after rotational atherectomy (RA) that predict good stent expansion for severely calcified coronary lesions. Fifty consecutive calcified lesions were subjected to RA under OFDI guidance. We performed OFDI just after RA and stenting. We measured the morphology of calcium after RA, and assessed how these factors influence stent expansion. The stent expansion index was defined as the minimum stent area divided by the average of the proximal and distal reference lumen areas. Minimum thickness of calcification in the intima after RA showed a significant negative correlation with stent expansion (r = − 0.53, P
- Published
- 2017
42. The novel echo-guided ProGlide technique during percutaneous transfemoral transcatheter aortic valve implantation
- Author
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Yoshiaki Ito, Yasunari Sakamoto, Shinsuke Mori, Motoharu Araki, Norihiro Kobayashi, Masahiro Yamawaki, Masakazu Tsutumi, Yohsuke Honda, Takahiro Tokuda, and Keisuke Hirano
- Subjects
Male ,medicine.medical_specialty ,Percutaneous ,Transcatheter aortic ,Blood Loss, Surgical ,Femoral artery ,030204 cardiovascular system & hematology ,Transcatheter Aortic Valve Replacement ,03 medical and health sciences ,0302 clinical medicine ,Japan ,medicine.artery ,Occlusion ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Intraoperative Complications ,Aged, 80 and over ,business.industry ,Incidence (epidemiology) ,Incidence ,Odds ratio ,Aortic Valve Stenosis ,medicine.disease ,Surgery ,Femoral Artery ,Stenosis ,Outcome and Process Assessment, Health Care ,Treatment Outcome ,Surgery, Computer-Assisted ,Echocardiography ,Aortic Valve ,Female ,Cardiology and Cardiovascular Medicine ,business ,Complication - Abstract
OBJECTIVES The aim of this study was to assess clinical benefit of the Echo-guided ProGlide technique in patients undergoing percutaneous transfemoral transcatheter aortic valve implantation (TF-TAVI). BACKGROUND The efficacy of the Echo-guided ProGlide technique during percutaneous TF-TAVI was not previously clarified. METHODS A total of 121 consecutive patients who underwent percutaneous TF-TAVI at our institution between February 2014 and July 2017 were enrolled in this study. According to the introduction of this novel technique in March 2016, patients were divided into two groups (echo-guided group who underwent TAVI from March 2016 to July 2017, n = 63; not echo-guided group who underwent TAVI from February 2014 to February 2016, n = 58). The incidence of major vascular complications, defined per the Valve Academic Research Consortium-2 criteria, and ProGlide complications including acute femoral artery stenosis or occlusion and bleeding requiring any intervention. RESULTS The incidence of major vascular complication and ProGlide complication were significantly lower in the echo-guided group than in not echo-guided group (1.6% vs 17.2%, P
- Published
- 2017
43. Very early neointimal coverage of new biodegradable polymer drug-eluting stent compared with durable polymer everolimus-eluting stent evaluated by optical frequency domain imaging
- Author
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Takahiro Tokuda, Tsuyoshi Sakai, Keisuke Hirano, Kenji Makino, Masahiro Yamawaki, Norihiro Kobayashi, Yohsuke Honda, Shinsuke Mori, Masakazu Tsutsumi, Yoshiaki Ito, Shigemitsu Shirai, Masahiro Nauchi, Motoharu Araki, and Yasunari Sakamoto
- Subjects
Male ,Time Factors ,Polymers ,medicine.medical_treatment ,Everolimus eluting stent ,Coronary Artery Disease ,030204 cardiovascular system & hematology ,Prosthesis Design ,Coronary Restenosis ,03 medical and health sciences ,0302 clinical medicine ,Percutaneous Coronary Intervention ,Optical frequencies ,Predictive Value of Tests ,Neointima ,Durable polymer ,Absorbable Implants ,Medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Everolimus ,Prospective Studies ,Aged ,Aged, 80 and over ,Wound Healing ,business.industry ,Stent ,Cardiovascular Agents ,Drug-Eluting Stents ,Middle Aged ,Domain imaging ,Biodegradable polymer ,Coronary Vessels ,Increased risk ,Treatment Outcome ,Drug-eluting stent ,Female ,Cardiology and Cardiovascular Medicine ,business ,Tomography, Optical Coherence ,Biomedical engineering - Abstract
Polymeric component is associated with the increased risk of delayed vessel healing and stent endothelialization. We aimed to clarify neointimal coverage within 1 month after implantation of the new-generation abluminal biodegradable polymer (BP) drug-eluting stent (DES) compared with the second-generation durable polymer (DP) everolimus-eluting stent (EES). Between November 2015 and October 2016, 32 BP-DES and 25 DP-EES were evaluated by optical frequency domain imaging (OFDI) within 1 month after the procedure. The average interval to follow-up OFDI was not significantly different between the groups (16.3 ± 7.7 days in BP-DES vs. 15.4 ± 7.4 days in DP-EES, P = 0.75). Neointimal coverage was significantly superior in BP-DES in both apposed and malapposed strut (apposed: 53.9% in BP-DES vs. 28.0% in DP-EES, P 0.001; malapposed: 22.9% in BP-DES vs. 7.5% in DP-EES, P = 0.001). When the follow-up period was divided into 2 and 2 weeks, neointimal coverage was also significantly superior in BP-DES ( 2 weeks: 47.7% in BP-DES vs. 19.2% in DP-EES, P 0.001; 2 weeks: 60.1% in BP-DES vs. 37.4% in DP-EES, P = 0.001). The new-generation BP-DES showed excellent early neointimal coverage compared with the second-generation DP-EES in both apposed and malapposed struts.
- Published
- 2017
44. Characteristics and clinical outcomes of repeat endovascular therapy after infrapopliteal balloon angioplasty in patients with critical limb ischemia
- Author
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Kenji Makino, Yohsuke Honda, Shigemitsu Shirai, Takahiro Tokuda, Motoharu Araki, Tsuyoshi Sakai, Masahiro Yamawaki, Keisuke Hirano, Masakazu Tsutsumi, Shinsuke Mori, Yoshiaki Ito, Norihiro Kobayashi, and Yasunari Sakamoto
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,Critical Illness ,030204 cardiovascular system & hematology ,Balloon ,Endovascular therapy ,Amputation, Surgical ,03 medical and health sciences ,Peripheral Arterial Disease ,0302 clinical medicine ,Restenosis ,Ischemia ,Recurrence ,Risk Factors ,Angioplasty ,Internal medicine ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Stage (cooking) ,Aged ,Retrospective Studies ,Aged, 80 and over ,Wound Healing ,Ejection fraction ,business.industry ,General Medicine ,Critical limb ischemia ,Middle Aged ,medicine.disease ,Limb Salvage ,Progression-Free Survival ,Surgery ,Treatment Outcome ,Lower Extremity ,Retreatment ,Cardiology ,Female ,Hemodialysis ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Angioplasty, Balloon - Abstract
OBJECTIVES We clarified characteristics and clinical outcomes of critical limb ischemia (CLI) patients who underwent repeat endovascular therapy (EVT) for infrapopliteal lesions. BACKGROUND High restenosis rate after infrapopliteal EVT remains a major concern. METHODS Patients with CLI who underwent EVT between April 2007 and February 2014, were divided into the following three groups according to how often EVT was repeated: Group A, no repeat of EVT; Group B, EVT repeated once/twice; and Group C, EVT repeated ≥3 times. RESULTS Wound healing rates at 1 year were 93.9% in Group A, 77.1% in Group B, and 27.3% in Group C (P
- Published
- 2017
45. Use of the Wound, Ischemia, foot Infection classification system in hemodialysis patients after endovascular treatment for critical limb ischemia
- Author
-
Motoharu Araki, Yoshiaki Ito, Takahiro Tokuda, Keisuke Hirano, Norihiro Kobayashi, Masahiro Yamawaki, Shisuke Mori, and Yasunari Sakamoto
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,Ischemia ,030204 cardiovascular system & hematology ,Risk Assessment ,Amputation, Surgical ,03 medical and health sciences ,0302 clinical medicine ,Postoperative Complications ,Japan ,Renal Dialysis ,Risk Factors ,medicine ,Humans ,030212 general & internal medicine ,Aged ,Retrospective Studies ,business.industry ,Incidence (epidemiology) ,Incidence ,Endovascular Procedures ,Retrospective cohort study ,Critical limb ischemia ,medicine.disease ,Surgery ,body regions ,Survival Rate ,Amputation ,Lower Extremity ,Wound Infection ,Female ,Hemodialysis ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,Risk assessment ,business ,Foot (unit) ,Follow-Up Studies - Abstract
The Wound, Ischemia, foot Infection (WIfI) classification system is used to predict the amputation risk in patients with critical limb ischemia (CLI). The validity of the WIfI classification system for hemodialysis (HD) patients with CLI is still unknown. This single-center study evaluated the prognostic value of WIfI stages in HD patients with CLI who had been treated with endovascular therapy (EVT).A retrospective analysis was performed of collected data on CLI patients treated with EVT between April 2007 and December 2015. All patients were classified according to their wound status, ischemia index, and extent of foot infection into the following four groups: very low risk, low risk, moderate risk, and high risk. Comorbidities and vascular lesions in each group were analyzed. The prognostic value of the WIfI classification was analyzed on the basis of the wound healing rate and amputation-free survival at 1 year.This study included 163 consecutive CLI patients who underwent HD and successful endovascular intervention. The rate of the high-risk group (36%) was the highest among the four groups, and the proportions of very-low-risk, low-risk, and moderate-risk patients were 10%, 18%, and 34%, respectively. The mean follow-up duration was 784 ± 650 days. The wound healing rates at 1 year were 92%, 70%, 75%, and 42% in the very-low-risk, low-risk, moderate-risk, and high-risk groups, respectively (P .01). A similar trend was observed for the 1-year amputation-free survival among the groups (76%, 58%, 61%, and 46%, respectively; P = .02).The WIfI classification system predicted the wound healing and amputation risks in a highly selected group of HD patients with CLI treated with EVT, with a statistically significant difference between high-risk patients and other patients.
- Published
- 2017
46. A Sheathless Retrograde Approach Via the Popliteal Artery Is Useful and Safe for Treating Chronic Total Occlusions in the Superficial Femoral Artery
- Author
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Reiko Tsukahara, Keisuke Hirano, Masatsugu Nakano, Toshiya Muramatsu, and Takahiro Tokuda
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,Arterial Occlusive Diseases ,Constriction, Pathologic ,Punctures ,Lesion ,medicine.artery ,Catheterization, Peripheral ,medicine ,Humans ,Popliteal Artery ,Radiology, Nuclear Medicine and imaging ,Aged ,Retrospective Studies ,Miniaturization ,Superficial femoral artery ,business.industry ,Endovascular Procedures ,Significant difference ,Mean age ,Equipment Design ,Popliteal artery ,Femoral Artery ,Treatment Outcome ,Baseline characteristics ,Chronic Disease ,Retrograde approach ,Female ,Surgery ,Radiology ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,Time to hemostasis ,business ,Vascular Access Devices - Abstract
PURPOSE To compare the safety and success of a retrograde approach using a microcatheter vs. a sheath in the treatment of superficial femoral artery (SFA) chronic total occlusions (CTOs). METHODS From April 2007 to December 2012, 188 consecutive patients underwent EVT for 229 de novo SFA CTOs using the retrograde approach in 68 patients (35 men; mean age 72 years). This cohort was divided into cases performed with a 4-F or 6-F sheath (n=28, 36 limbs) and those with a 2.1-F microcatheter (n=35, 49 limbs). The primary outcomes were mean time to hemostasis and number of intra- and postoperative puncture site complications, as well as the success of popliteal artery puncture, lesion crossing, and reperfusion. RESULTS There were no significant differences between two groups in baseline characteristics. PA puncture was successful in all limbs, and the success in crossing the lesion with the wire was not significantly different (91.9% in the sheath group vs. 89.8% in the microcatheter group). Mean time to hemostasis was 8.9±8.8 minutes in the microcatheter group vs. 47.7±13 minutes in the sheath group (p
- Published
- 2014
47. Wound healing of critical limb ischemia with tissue loss in patients on hemodialysis
- Author
-
Takahiro Tokuda, Masahiro Yamawaki, Hideyuki Takimura, Keisuke Hirano, Masakazu Tsutumi, Yohsuke Honda, Takuro Takama, Yoshiaki Ito, Norihiro Kobayashi, Motoharu Araki, Kenji Makino, Shinsuke Mori, Yasunari Sakamoto, and Shigemitsu Shirai
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,Critical Illness ,Kaplan-Meier Estimate ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Japan ,Ischemia ,Recurrence ,Renal Dialysis ,Risk Factors ,medicine ,Odds Ratio ,Humans ,Radiology, Nuclear Medicine and imaging ,030212 general & internal medicine ,Aged ,Proportional Hazards Models ,Retrospective Studies ,Aged, 80 and over ,Wound Healing ,Chi-Square Distribution ,business.industry ,Proportional hazards model ,Angiography ,Retrospective cohort study ,General Medicine ,Odds ratio ,Critical limb ischemia ,Middle Aged ,Limb Salvage ,Surgery ,Treatment Outcome ,Relative risk ,Multivariate Analysis ,Kidney Failure, Chronic ,Stents ,Hemodialysis ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Wound healing ,Chi-squared distribution ,Angioplasty, Balloon - Abstract
We assessed wound healing in patients on hemodialysis (HD) with critical limb ischemia (CLI). This study enrolled 267 patients (including 120 patients on HD and 147 patients not on HD) who underwent endovascular therapy (EVT) for CLI. The primary endpoint was wound-healing rate at two years. Secondary endpoints were time to wound healing, wound recurrence rate, and limb salvage at two years. The percentage of male and young patients was higher in the HD patients ( p
- Published
- 2016
48. Growth of CuInGaSe2 Films by RF Sputtering Using CuInGaSe2 Single Phase Target
- Author
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Shou Bin Zhang, Kenichiro Miseki, Akira Nagaoka, Shigeo Doutyoku, Rie Mori, Takahiro Tokuda, and Kenji Yoshino
- Subjects
Diffraction ,Materials science ,business.industry ,General Medicine ,Copper indium gallium selenide solar cells ,law.invention ,chemistry.chemical_compound ,Quality (physics) ,Optics ,chemistry ,law ,Sputtering ,Selenide ,Solar cell ,Optoelectronics ,Thin film ,Single phase ,business - Abstract
CuIn0.8Ga0.2Se2 thin film is grown at room temperature by RF sputtering using high quality of CuIn0.8Ga0.2Se2 single phase target. A (112) diffraction peak is dominant with no secondary phases such as selenide materials in the X-ray diffraction pattern. A flat and homogeneous surface can be obtained in the sample.
- Published
- 2013
49. Excitonic emissions of AgInS 2 crystals with chalcopyrite and orthorhombic structure
- Author
-
Kazuhiro Honjo, Raul Paucar, Kenji Yoshino, YongGu Shim, Kazuki Wakita, Umihito Miyamoto, and Takahiro Tokuda
- Subjects
Photoluminescence ,Chemistry ,Band gap ,Astrophysics::High Energy Astrophysical Phenomena ,Exciton ,Analytical chemistry ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Crystal structure ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,Condensed Matter Physics ,Emission intensity ,Condensed Matter::Materials Science ,Orthorhombic crystal system ,Emission spectrum ,Luminescence ,Astrophysics::Galaxy Astrophysics - Abstract
Micro-structure of AgInS2 grown by the hot-press method has been examined by the properties of free-exciton emission using a scanning confocal-microscopy system. The crystal structures are distinguished by a two-dimensional image of free-exciton emission at RT. The excitonic emissions with the orthorhombic structure were also analyzed and a bound exciton emission was observed in addition to a free exciton emission. Furthermore, it is indicated that the two-dimensional image of decay-time constant is more insusceptible to resolve the structures than that of emission intensity. (© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
- Published
- 2013
50. Six cases of delayed injury to chest or abdominal organs requiring emergency surgery
- Author
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Takuro Hayashi, Shinichi Sato, Daisuke Mizu, Takahiro Atsumi, Takahiro Tokuda, and Koichi Ariyoshi
- Subjects
medicine.medical_specialty ,Emergency surgery ,business.industry ,General surgery ,medicine ,business ,Surgery - Published
- 2013
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