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Background: In 2022 and 2023, Medtronic recalled implantable defibrillators because they may deliver less than full-energy shocks. The 2022 problem truncates the second phase of the waveform (SCP-T2), resulting in ∼32-J shocks, and is mitigated by downloadable software. The 2023 malfunction truncates the first phase of the waveform, resulting in 0- to 12-J shocks due to a glassed feedthrough problem (GFT-T1) that might be avoided by programming B>AX shock polarity., Objective: The purpose of this study was to assess the consequences of GFT-T1 and SCP-T2 shocks in the Food and Drug Administration's Manufacturers and User Facility Device Experience (MAUDE) database and to estimate the incidences of GFT-T1 and SCP-T2., Methods: We analyzed MAUDE reports supplemented by Medtronic data; lead failures were excluded. The incidences of SCP-T2 and GFT-T1 were estimated using USA volumes for devices with glassed feedthroughs., Results: One hundred thirty-two devices delivered truncated shocks: 27 (20.5%) were GFT-T1; 103 (78.0%) were SCP-T2; and 2 (1.5%) truncated both phases (BOTH-T1&2). Of 54 ventricular fibrillation (VF) patients, 21 (38.9%) were not defibrillated by truncated shocks: 8 (38.1%) received GFT-T1 shocks, 12 (57.1%) received SCP-T2 shocks, and 1 received a BOTH-T1&2 shock; 2 patients suffered unrelated deaths; 1 was externally rescued; 1 outcome was unknown; the others were defibrillated by subsequent shocks or terminated spontaneously. The majority of patients (79.1%) shocked for ventricular tachycardia (VT) were converted, primarily (94.1%) by SCP-T2 shocks. Estimated incidences of GFT-T1 and SCP-T2 were 0.0078%-0.0088% and 0.1062%-0.1110%., Conclusion: GFT-T1 and SCP-T2 shocks can result in failure to terminate VF/VT, but they may be preventable. Although the incidences of these truncated shocks are very low, heightened surveillance is warranted., Competing Interests: Disclosures The authors have no conflicts to disclose., (Copyright © 2023 Heart Rhythm Society. Published by Elsevier Inc. All rights reserved.)

Background: Spontaneous coronary artery dissection (SCAD) is often treated conservatively due to revascularization risks. Yet, an important number of SCAD patients have high acuity characteristics necessitating revascularization, with uncertain long-term outcomes., Objectives: Document revascularization utilization and long-term outcomes in high acuity SCAD., Methods: Prospective/retrospective analysis of consecutive patients with acute myocardial infarction (AMI) due to first SCAD event presenting directly to the Minneapolis Heart Institute 2002-2021, median follow-up 3.8 years., Results: Among 139 patients (age 49 ± 12 years, 96% female), revascularization was performed in 60 (43%), utilizing percutaneous coronary intervention (PCI) (n = 56, successful in 80%) or coronary artery bypass graft (n = 4). In the entire cohort, 90 (65%) unique patients had one or more high acuity characteristic: ST-elevation (38%), proximal dissection (38%), cardiogenic shock (6.5%), cardiac arrest (9.4%), left main dissection (6.5%), peripartum dissection (7.2%). High acuity patients accounted for 51 of 60 (85%) revascularizations. Revascularization rates were: ST-elevation (60%), proximal dissection (62%), cardiogenic shock (89%), cardiac arrest (62%), left main dissection (100%), peripartum dissection (70%). Survival was 97% (revascularized) vs 100% (nonrevascularized); p = 0.2. Adverse outcomes (revascularized vs. nonrevascularized) included recurrent AMI:16.7% versus 8.9%; p = 0.2, SCAD recurrence: 13.3% versus 6.3%; p = 0.1, stroke: 5% versus 2.5%; p = 0.44, implantable cardioverter-defibrillator: 6.7% versus 6.3%; p > 0.9. Reintervention was necessary in 21% of PCI-treated patients., Conclusions: High-acuity characteristics were present in nearly two-thirds of this SCAD cohort; the vast majority of revascularizations were performed in high-acuity patients. Despite high acuity, long-term survival was favorable in revascularized patients., (© 2022 Wiley Periodicals LLC.)

Spontaneous coronary artery dissection (SCAD) is a relatively newly diagnosed area, and evidence-based medicine (EBM) standards are emerging and currently include an aspirin, β blocker, clopidogrel, angiotensin-converting enzyme inhibitor/angiotensin-receptor blocker for patients with hypertension, vascular abnormality imaging, and cardiac rehabilitation. Because SCAD is an uncommon condition, many providers are unfamiliar with EBM treatment standards which could affect the implementation of recommended treatment. This study documented the frequency of failure to meet EBM SCAD treatment standards and factors contributing to conformance failure. Patients who presented to a tertiary referral hospital from January 1, 2005, to July 6, 2020, were included. The electronic medical record was reviewed for EBM treatment. Patients who did not meet the criteria of EBM were contacted by phone for a phone interview. The study period included 118 patients with SCAD, 3 of whom (2.5%) died and were not eligible for this study. In the final cohort of 115 patients, the average age was 55 years, female gender (97%) and EBM standards were met in 30%. Of patients who participated in the phone interview, 38 (33%) reported frustration with SCAD misdiagnosis (39%), inadequate mental health resources (37%), and communication failure regarding the need for cardiologist follow-up (26%). Cardiac rehabilitation use was impacted by location, time of day, availability, and cost. The most common medication-limiting factor for β-blocker usage was fatigue (15%). Most (59%) patients did not undergo fibromuscular dysplasia imaging. In conclusion, in this 15-year SCAD study from a single tertiary care hospital SCAD registry, only 30% met the current EBM for SCAD. Unique solutions that are both patient-informed and evidence-driven are needed to achieve the best clinical outcomes., (Copyright © 2022 Elsevier Inc. All rights reserved.)

Single ventricle patients typically undergo some form of advanced diagnostic imaging prior to superior cavopulmonary connection (SCPC). We sought to evaluate variability of diagnostic practice and associated comprehensive risk. A retrospective evaluation across 4 institutions was performed (1/1/2010-9/30/2016) comparing the primary modalities of cardiac catheterization (CC), cardiac magnetic resonance (CMR), and cardiac computed tomography (CT). Associated risks included anesthesia/sedation, vascular access, total room time, contrast agent usage, radiation exposure, and adverse events (AEs). Of 617 patients undergoing SCPC, 409 (66%) underwent at least one advanced diagnostic imaging study in the 60 days prior to surgery. Seventy-eight of these patients (13%) were analyzed separately because of a concomitant cardiac intervention during CC. Of 331 (54%) with advanced imaging and without catheterization intervention, diagnostic CC was most common (59%), followed by CT (27%) and CMR (14%). Primary modality varied significantly by institution (p < 0.001). Median time between imaging and SCPC was 13 days (IQR 3-33). Anesthesia/sedation varied significantly (p < 0.001). Pre-procedural vascular access did not vary significantly across modalities (p = 0.111); procedural access varied between CMR/CT and CC, in which central access was used in all procedures. Effective radiation dose was significantly higher for CC than CT (p < 0.001). AE rate varied significantly, with 12% CC, 6% CMR, and 1% CT (p = 0.004). There is significant practice variability in the use of advanced diagnostic imaging prior to SCPC, with important differences in associated procedural risk. Future studies to identify differences in diagnostic accuracy and long-term outcomes are warranted to optimize diagnostic protocols., (© 2021. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Background: Patients with single ventricle (SV) congenital heart disease (CHD) undergo several interventions in the first years of life. Advanced diagnostics are required for interstage assessment of anatomy, but are associated with significant diagnostic risk. We sought to evaluate image quality, risk, and accuracy of cardiac computed tomography (CCT) for evaluation of anatomy prior to superior cavopulmonary connection (SCPC) compared to surgical findings across 2 institutions., Methods: A retrospective evaluation of image quality, risk, and accuracy of pre-SCPC CCT was performed at 2 institutions between January 1, 2010 and September 30, 2016., Results: CCT was performed in 90 SV CHD patients with a median age of 4.03 months (interquartile range [IQR] 3.36, 5.33) prior to SCPC. Image quality was optimal (84%) or good (16%) in all patients, without significant discrepancy compared to surgical findings. 7 patients (8%) required interventional cardiac catheterization subsequent to CCT and before surgical intervention. 49% of scans were performed without sedation, 43% of scans were performed with mild to moderate sedation, and 8% of scans were performed with general anesthesia. The median total procedural dose-length product (DLP) was 18 (IQR 14, 26) mGy*cm, estimating an age adjusted radiation dose of 1.4 millisievert (mSv). One minor (1%) adverse event was reported within 24 h of the CCT. Surgical complications were unrelated to the presurgical findings., Conclusions: CCT for pre-SCPC evaluation is safe, with excellent accuracy for anatomy at the time of surgical intervention across 2 institutions. In select patients, noninvasive evaluation with CCT may be indicated.

Background: Cardiac computed tomography (CT) is increasingly used in pediatric patients with congenital heart disease (CHD). Variability of practice and of comprehensive diagnostic risk across institutions is not known., Methods: Four centers prospectively enrolled consecutive pediatric CHD patients <18 years of age undergoing cardiac CT from January 6, 2017 to 1/30/2020. Patient characteristics, cardiac CT data and comprehensive diagnostic risk were compared by age and institutions. Risk categories included sedation and anesthesia use, vascular access, contrast exposure, cardiovascular medication, adverse events (AEs), and estimated radiation dose., Results: Cardiac CT was performed in 1045 pediatric patients at a median (interquartile range, IQR) age of 1.7 years (0.3, 11.0). The most common indications were arterial abnormalities, suspected coronary artery anomalies, functionally single ventricle heart disease, and tetralogy of Fallot/pulmonary atresia. Sedation was used in 8% and anesthesia in 11% of patients. Peripheral vascular access was utilized for 93%. Median contrast volume was 2 ​ml/kg. Beta blockers were administered in 11% of cases and nitroglycerin in 2% of cases. The median (IQR) total procedural dose length product (DLP) was 20 ​mGy∗cm (10, 50). Sedation, vascular access, contrast exposure, use of cardiovascular medications and radiation dose estimates varied significantly by institution and age (p ​< ​0.001). Seven minor adverse events (0.7%) and no major adverse events were reported., Conclusion: Cardiac CT for CHD is safe in pediatric patients when appropriate CT technology and expertise are available. Scans can be acquired at relatively low radiation exposure with few minor adverse events., (Copyright © 2021 Society of Cardiovascular Computed Tomography. Published by Elsevier Inc. All rights reserved.)

Background: Image quality and radiation dose are optimized with a slow, steady heart rate (HR) when imaging the coronary arteries during cardiac computed tomography angiography (CCTA). The safety, efficacy, and protocol for HR reduction with beta blocker medication is not well described in a pediatric patient population., Objective: Provide a safe and efficient metoprolol dose protocol to be used in pediatric outpatients undergoing CCTA., Methods: We conducted a retrospective review of all pediatric outpatients who received metoprolol during CCTA. Demographic and clinical characteristics were summarized and the average reduction in HR was estimated using a multivariate linear regression model. Images were evaluated on a 1-4 scale (1= optimal)., Results: Seventy-eight pediatric outpatients underwent a CCTA scan with the use of metoprolol. The median age was 13 years, median weight of 46 kg, and 36 (46%) were male. The median doses of metoprolol were 1.5 (IQR 1.1, 1.8) mg/kg and 0.4 (IQR 0.2, 0.7) mg/kg for oral and intravenous administrations, respectively. Procedural dose-length product was 57 (IQR 30, 119) mGy*cm. The average reduction in HR was 19 (IQR 12, 26) beats per minute, or 23%. No complications or adverse events were reported., Conclusion: Use of metoprolol in a pediatric outpatient setting for HR reduction prior to CCTA is safe and effective. A metoprolol dose protocol can be reproduced when a slower HR is needed, ensuring faster acquisition times, clear images, and associated reduction in radiation exposure in this population. (Arq Bras Cardiol. 2021; 116(1):100-105).

Background: Nonatherosclerotic abdominal arterial vasculopathies (NAVs), including mesenteric or renal artery dissection, aneurysm, stenosis, and vasculitis, are rare but have great clinical significance. Patients may present emergently with life-threatening complications such as arterial rupture and hemorrhagic shock. Herein, we present our center's experience with NAVs and provide extensive literature review to close the gap in the scarce, related literature., Methods: From a single-center retrospective data analysis, we identified and characterized subjects (aged 18-60 years) who presented with NAV between January 2000 and December 2015. Of the 1416 charts reviewed, 118 met inclusion criteria., Results: The average age of patients with NAV was 47.0 ± 9.9 years, mostly affecting women (64%). Primary diagnoses included fibromuscular dysplasia (FMD) (25.4%), isolated aneurysms (24.6%), and median arcuate ligament syndrome (MALS) (15.3%). Less common diagnoses were localized vasculitis of the gastrointestinal tract (LVGT) (7.6%), isolated dissection (5.1%), microscopic polyangiitis and granulomatosis with polyangiitis (5.1%), trauma (4.2%), segmental arterial mediolysis (4.2%), Ehlers-Danlos syndrome (2.5%), Takayasu's arteritis (2.5%), polyarteritis nodosa (1.7%), idiopathic abdominal aortitis (0.8%), and Loeys-Dietz syndrome (0.8%). Females constituted 90% of patients with FMD, 77.8% with MALS, 77.8% with isolated aneurysms, 66.7% with Takayasu arteritis, and 55.6% with LVGT. Prevalent comorbidities included tobacco use (43.6%) and hypertension (52.1%). Coil embolization was used in 14.4%, anticoagulation in 11.9%, angioplasty/stenting in 11.9%, open resection/surgical revascularization in 10.2%, and prednisone in 10.2% of the cases. Conservative management was pursued in 33.1% of the patients. A high degree of symptom relief was shown in 91.7%., Conclusions: NAV are rare and can be caused by different etiologies that primarily affect females. Hypertension and tobacco use were prevalent. Various imaging strategies revealed aneurysms, stenosis, dissection, and/or thrombosis affecting renal and celiac arteries. Most patients improved with conservative, medical, endovascular, or surgical approach. More research is needed to standardize management approach to patients with NAV., (Copyright © 2019 Elsevier Inc. All rights reserved.)

Background: Hypercholesterolemia is a major risk factor for cardiovascular disease. Women with hypercholesterolemia and familial hypercholesterolemia (FH) are a high-risk group often underdiagnosed, undertreated, and unaware of the need for cascade screening., Objectives: The objectives were to identify the prevalence of hypercholesterolemia and FH in 2 national databases, explore lifestyle/medication adherence, and examine rates of cascade screening (lipid testing in all first-degree relatives) among those with FH., Methods: This was a cross-sectional study of women who completed an online survey in 2014. Outcomes were examined for 3 groups: diagnosed, probable, and no FH. For FH, multivariable logistic regression was used to examine the association between family member screening for FH and sociodemographic and/or clinical characteristics., Results: There were 761 respondents with a mean (±standard deviation) age of 59 ± 10.1 years; 26% reported FH, 22% probable FH, and 51% no FH. Eighty-three percent of the total sample and 95% with FH take a statin. In those with hypercholesterolemia and FH, 65% and 58% reported high medication adherence, respectively. Women with probable FH consumed significantly fewer fruits/vegetables and were less active. FH cascade screening was: siblings 54%, parents 37%, and children 34%. Marital status, annual household income, and diabetes were significantly associated with cascade screening., Conclusion: In a survey of informed women with hypercholesterolemia and FH, cascade screening is underused. Our findings warrant increased efforts to identify cascade screening barriers. Early detection and treatment of hypercholesterolemia/FH is a priority for women, and their first-degree relatives, as this may dramatically reduce cardiovascular disease impact., (Copyright © 2016 National Lipid Association. Published by Elsevier Inc. All rights reserved.)

Cardiovascular disease (CVD) is the leading cause of death for women, and disproportionally so for African American and Latina women. CVD is largely preventable and many risks can be attributable to health behaviors, implementing and sustaining positive health behaviors is a challenge. Motivational interviewing is one promising intervention for initiating behavior change. The purpose of this review was to identify, synthesize, and critically analyze the existing literature on the use of motivational interviewing as a behavioral intervention to reduce CVD risk among African American and Latina women. Seven studies were identified that met inclusion criteria. Results of this review suggest that motivational interviewing has mixed results when used to reduce cardiovascular risk factors in African American and Latina women. More research using a standardized motivational interviewing approach is needed to definitively determine if it is an effective behavioral intervention to reduce CVD risk when used in populations of African American and Latina women.

Understanding the impact of peripheral artery disease (PAD) requires broad evaluation of how functional limitations of PAD affect patients' perceptions of health-related quality of life (HRQL). The objective of this study was to describe the development, testing, and psychometric properties of the PAD Quality of Life Questionnaire (PADQOL). The PADQOL was developed in three steps: (1) interviews of symptomatic PAD patients provided content of the initial questionnaire; (2) co-administration with the SF-36 (a 36-item short-form health survey), Walking Impairment Questionnaire, and Profile of Mood States examined construct validity; and (3) a three-phased factor analysis identified factors and shortened the questionnaire. Data analyses from 297 symptomatic PAD patients resulted in a 38-item questionnaire of five factors: Social relationships and interactions, Self-concept and feelings, Symptoms and limitations in physical functioning, Fear and uncertainty, and Positive adaptation (α = 0.92-0.73) and items related to sexual function, intimate relationships and employment. Between-instrument correlations established construct validity. In conclusion, PADQOL is a validated measure to assess the disease-specific physical, psychosocial and emotional effects of PAD for research and practice.

Purpose of Review: This review highlights advances in the primary and secondary prevention of cardiovascular disease (CVD) in women in the preceding 12 months., Recent Findings: The American Heart Association (AHA) has recently published guidelines on the prevention of CVD in women, which brought new attention to this important topic. Limited progress has been made regarding an awareness of CVD among women, and modest progress has been made on the creation of health behavior change programs that effectively reduce smoking, increase physical activity and improve nutrition. Preventive therapies have been demonstrated to improve outcomes in women with diagnosed disease, but more research that includes women is required to further assess the benefits of primary preventive strategies and therapies., Summary: A review of the literature from the past year confirms the recommendations and direction set in the AHA's updated prevention guidelines. This review illuminates promising new directions for practice and the need for future research focused on strategies to advance early and lasting lifestyle changes to promote cardiovascular health and the prevention of CVD. Adoption of and adherence to the guidelines, continued evaluation and publication of effective practice strategies, and ongoing research are critical to improve efforts to prevent CVD in women.