23 results on '"Cardiac procedures"'
Search Results
2. Cardiac procedures and managing technology
- Author
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Joanna L. Adams and David P. Thomson
- Subjects
medicine.medical_specialty ,business.industry ,Cardiac procedures ,Medicine ,business ,Intensive care medicine - Published
- 2021
3. Ethical considerations for cardiac surgical interventions in children with trisomy 13 and trisomy 18
- Author
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Renee D. Boss and Kathryn Neubauer
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Pediatrics ,medicine.medical_specialty ,Surgical approach ,Palliative care ,Trisomy 13 Syndrome ,business.industry ,MEDLINE ,medicine.disease ,Child, Preschool ,Intervention (counseling) ,Cardiac procedures ,Quality of Life ,Genetics ,Humans ,Medicine ,Down Syndrome ,Child ,Chromosomes, Human, Pair 18 ,business ,Trisomy ,Surgical interventions ,Trisomy 18 Syndrome ,Genetics (clinical) ,Medical ethics - Abstract
Medical and surgical approaches to children with trisomy 13 and 18 are evolving, and an increasing number of patients are being considered for simple and complex cardiac procedures. This review describes how the shifts in medical and social considerations for children with trisomy 13 and 18 mirror the shifts that occurred 50 years ago for children with trisomy 21. Yet the variability in cardiac lesions, and variability in non-cardiac comorbidities, is much greater for patients with trisomy 13 and 18 than for those with trisomy 21. That variability, combined with the severe neurologic impairment in survivors, complicates the current risk: benefit balance of surgical intervention. Consistent approaches to care for these patients should be built on an evidence base, and should include contributions from specialists in medical ethics and palliative care.
- Published
- 2020
4. Anaesthetic management and unplanned admission to intensive care after thoracic surgery
- Author
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Marc Licker
- Subjects
Anaesthetic management ,medicine.medical_specialty ,Thoracic Surgical Procedure ,Critical Care ,business.industry ,General surgery ,MEDLINE ,Thoracic Surgery ,Thoracic Surgical Procedures ,Anesthesiology and Pain Medicine ,Cardiothoracic surgery ,Intensive care ,Cardiac procedures ,Anesthesia, Cardiac Procedures ,medicine ,Humans ,business ,Anesthetics - Published
- 2019
5. Consequences of canceling elective invasive cardiac procedures during Covid‐19 outbreak
- Author
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Ramiro Trillo, Bruno García del Blanco, Fernando Macaya, José-Luis Díez, Daniel Morena-Salas, Juan H. Alonso-Briales, Ignacio J. Amat-Santos, José-Ramón Ruiz-Arroyo, Jose-Ramon Rumoroso, Alejandro Gutierrez-Barrios, José-Antonio Diarte, Jesús Jiménez-Mazuecos, Ignacio Cruz-González, Eduard Bosch, Raúl Moreno, Fernando Sarnago, Araceli Frutos, Fernando Alfonso, José Moreu, Eduardo Pinar, Soledad Ojeda, Sara M Ballesteros-Pradas, Francisco Javier Irazusta, Enrique Novo, Rosa Lázaro, Fernando Lozano, Rafael Romaguera, Emilio Paredes, Valeriano Ruiz-Quevedo, Armando Pérez de Prado, J. Díaz, Manuel Villa, José-María de la Torrre Hernández, Eduardo Alegría-Barrero, Oriol Rodríguez-Leor, Pilar Portero, and Beatriz Vaquerizo
- Subjects
Male ,medicine.medical_specialty ,Coronavirus disease 2019 (COVID-19) ,Waiting Lists ,diagnostic ,Comorbidity ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Diabetes mellitus ,Health care ,Cardiac procedures ,Pandemic ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,In patient ,030212 general & internal medicine ,Cardiac Surgical Procedures ,Pandemics ,catheterization ,health care economics and organizations ,Aged ,Aged, 80 and over ,transcatheter valve implantation (TVI) ,business.industry ,SARS-CoV-2 ,Outbreak ,COVID-19 ,General Medicine ,medicine.disease ,catheterization, diagnostic, percutaneous coronary intervention (PCI), transcatheter valve implantation (TVI) ,Cardiovascular Diseases ,Elective Surgical Procedures ,Spain ,Radiology Nuclear Medicine and imaging ,Emergency medicine ,Population study ,Female ,percutaneous coronary intervention (PCI) ,business ,Cardiology and Cardiovascular Medicine ,human activities - Abstract
BACKGROUND: During COVID-19 pandemic in Spain, elective procedures were canceled or postponed, mainly due to health care systems overwhelming. OBJECTIVE: The objective of this study was to evaluate the consequences of interrupting invasive procedures in patients with chronic cardiac diseases due to the COVID-19 outbreak in Spain. METHODS: The study population is comprised of 2,158 patients that were pending on elective cardiac invasive procedures in 37 hospitals in Spain on the 14th of March 2020, when a state of alarm and subsequent lockdown was declared in Spain due to the COVID-19 pandemic. These patients were followed-up until April 31th. RESULTS: Out of the 2,158 patients, 36 (1.7%) died. Mortality was significantly higher in patients pending on structural procedures (4.5% vs. 0.8%, respectively; p < .001), in those >80 year-old (5.1% vs. 0.7%, p < .001), and in presence of diabetes (2.7% vs. 0.9%, p = .001), hypertension (2.0% vs. 0.6%, p = .014), hypercholesterolemia (2.0% vs. 0.9%, p = .026) [Correction added on December 23, 2020, after first online publication: as per Dr. Moreno's request changes in p-values were made after original publication in Abstract.], chronic renal failure (6.0% vs. 1.2%, p < .001), NYHA > II (3.8% vs. 1.2%, p = .001), and CCS > II (4.2% vs. 1.4%, p = .013), whereas was it was significantly lower in smokers (0.5% vs. 1.9%, p = .013). Multivariable analysis identified age > 80, diabetes, renal failure and CCS > II as independent predictors for mortality. CONCLUSION: Mortality at 45 days during COVID-19 outbreak in patients with chronic cardiovascular diseases included in a waiting list due to cancellation of invasive elective procedures was 1.7%. Some clinical characteristics may be of help in patient selection for being promptly treated when similar situations happen in the future.
- Published
- 2020
- Full Text
- View/download PDF
6. Revision thoracic slide tracheoplasty: Outcomes following unsuccessful tracheal reconstruction
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Karthik Balakrishnan, Catherine K. Hart, Michael J. Rutter, Meredith E. Tabangin, Jareen Meinzen-Derr, Roosevelt Bryant, Christina J. Yang, Douglas R. Sidell, Peter B. Manning, and Alessandro de Alarcon
- Subjects
medicine.medical_specialty ,business.industry ,Congenital tracheal stenosis ,Significant difference ,Slide tracheoplasty ,030204 cardiovascular system & hematology ,Postoperative management ,law.invention ,Surgery ,03 medical and health sciences ,0302 clinical medicine ,Otorhinolaryngology ,law ,Cardiac procedures ,Retrospective analysis ,Cardiopulmonary bypass ,Medicine ,030223 otorhinolaryngology ,business ,Airway - Abstract
Objectives/hypothesis Over the past decade, thoracic slide tracheoplasty (TST) has become the principal operation in the management of congenital tracheal stenosis. The purpose of this report was to describe our experience with revision TST following unsuccessful prior tracheal reconstruction. Study design Retrospective analysis at an academic children's hospital. Methods Patients undergoing TST on cardiopulmonary bypass between January 2005 and May 2014 were reviewed. Patients with a history of prior airway surgery were extracted for further analysis. Preoperative patient variables and postoperative outcomes were evaluated and compared between patients undergoing revision slide tracheoplasty (RTST) and a control group of 26 matched patients undergoing primary surgery TST. Results Twenty-six revision patients (25 referrals, one primary patient) of 162 patients reviewed over the study period met inclusion criteria. Twenty-three patients had a history of complete tracheal rings, and three patients had cartilaginous deficiency. A total of 41 airway reconstruction procedures had been performed prior to RTST. When compared to primary TST, patients undergoing RTST required fewer cardiac procedures intraoperatively, and fewer mean ventilator hours (P = .01) postoperatively. There was no significant difference in the median length of stay, requirement of >48 hours ventilation, or postoperative complications between groups. There was one nonsurgical postoperative mortality following RTST. Conclusions Despite some differences in the postoperative management when compared to nonrevision cases, revision TST can be successfully performed after prior tracheal reconstruction with good postoperative outcomes. Level of evidence 4. Laryngoscope, 128:2181-2186, 2018.
- Published
- 2018
7. Postponing cardiac procedures during the pandemic: The balance between elective and selective!
- Author
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Stefano Garzon and Pedro A. Lemos
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medicine.medical_specialty ,2019-20 coronavirus outbreak ,Coronavirus disease 2019 (COVID-19) ,business.industry ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,COVID-19 ,Coronary Artery Disease ,General Medicine ,Treatment Outcome ,Balance (accounting) ,Elective Surgical Procedures ,Pandemic ,Cardiac procedures ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Cardiology and Cardiovascular Medicine ,Intensive care medicine ,business ,Pandemics ,Editorial Comment - Abstract
Key Points What the article teaches:Postponing elective cardiac procedures may have an adverse impact on short‐term outcomes. How it will impact practice:Elective patients scheduled for cardiac procedures have different risk profiles and the decision for postponing should take into consideration the chances of complications related to the deferral. What new research would help answer the question:Better validate tools to identify which subsets are more prone to early complications in case a scheduled invasive procedure is suspended.
- Published
- 2021
8. Influence of different fixation protocols on the preservation and dimensions of cardiac tissue
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Wiesława Klimek-Piotrowska, Mateusz K. Hołda, Mateusz Koziej, Katarzyna Piątek, and Jakub Hołda
- Subjects
Pathology ,medicine.medical_specialty ,Tissue Fixation ,Histology ,Pig heart ,Swine ,Formaldehyde ,030204 cardiovascular system & hematology ,Fixatives ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Cardiac procedures ,medicine ,Animals ,Molecular Biology ,Ecology, Evolution, Behavior and Systematics ,Fixative ,Fixation (histology) ,FORMALDEHYDE SOLUTION ,Heart ,Cell Biology ,Methods Articles ,medicine.anatomical_structure ,chemistry ,030220 oncology & carcinogenesis ,Thickening ,Anatomy ,Artifacts ,Developmental Biology ,Interatrial septum ,Biomedical engineering - Abstract
Recent extensive progress in invasive cardiac procedures has triggered a wave of dozens of heart morphometric anatomical studies that are carried out largely using autopsied samples fixed in formaldehyde solution prior to observations and measurements. In reality, very little is known about changes in heart tissue dimensions during fixation. The aim of this study was therefore to investigate how fixation affects the dimensions of cardiac tissue, and if different types and concentrations of reagents affect this phenomenon. A total of 40 pig heart samples were investigated, and seven different measuring sites were permanently marked in every heart prior to fixation. Four study groups (n = 10 each) were assembled that differed only in concentration and the type of fixative: (i) 2% formaldehyde solution; (ii) 4% formaldehyde solution (formalin); (iii) 10% formaldehyde solution; (iv) alcoholic formalin. The samples were measured before and after fixation at the following time points: 24 h, 72 h and 168 h. It was found that different fixatives significantly affected different parameters. Almost all of the heart dimensions that were measured stabilized after 24 h; later changes were statistically insignificant in the point-to-point comparison. Change in the length of the interatrial septum surface was not altered significantly in any of the fixatives after 24 h of preservation. It was found that 10% formaldehyde increased the thickness of muscular tissue only after 24 h; this thickening was reduced after 72 h and was insignificant at 168 h. Other heart parameters in this group do not present significant changes over the entire fixation time duration. In conclusion, the 10% formaldehyde phosphate-buffered solution appeared to be the best fixative among the fixatives that were studied for cardiac morphometric purposes; this solution caused the smallest changes in tissue dimensions. Measurements should be obtained at least after 1 week of preservation when most parameters exhibit the smallest changes compared with the non-preserved samples.
- Published
- 2016
9. Clinical impact of a high-sensitivity troponin assay introduction on patients presenting to the emergency department
- Author
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Jonathan C Knott, Jeffrey Lefkovits, and Daniel Peck
- Subjects
medicine.medical_specialty ,biology ,business.industry ,Outcome measures ,Retrospective cohort study ,Emergency department ,030204 cardiovascular system & hematology ,medicine.disease ,Troponin ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Cardiac procedures ,Emergency medicine ,Cohort ,Emergency Medicine ,medicine ,biology.protein ,Ischaemic heart disease ,030212 general & internal medicine ,Myocardial infarction ,business - Abstract
Objective Biomarkers are a critical component in the investigation of patients with potential ischaemic heart disease. The proposed benefits of a high-sensitivity troponin (hs-Tn) assay include earlier diagnosis of myocardial infarction. However, the decreased specificity may adversely affect clinical practice. The present study aims to investigate the impact that the introduction of a hs-Tn assay had on patients presenting to the ED. Methods A pre- and post-interventional analysis was performed on all patients presenting to the Royal Melbourne Hospital ED, and had a troponin, in the 12 months before and after the introduction of the hs-Tn assay. The main outcome measures were ED length of stay, admission rates, proportion of patients undergoing interventional cardiac procedures and proportion diagnosed with myocardial infarction. Results There were 6557 patients who had a conventional assay and 7335 patients who had a hs-Tn assay. The introduction of a hs-Tn assay was associated with an increased abnormal troponin rate (23.4% vs 28.1%, P
- Published
- 2016
10. Socio-economic Inequality in the Use of Procedures and Mortality Among AMI Patients: Quantifying the Effects Along Different Paths
- Author
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Terje P. Hagen, Tor Iversen, Unto Häkkinen, Søren Toksvig Klitkou, and Tron Anders Moger
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Inequality ,Public economics ,business.industry ,Health Policy ,medicine.medical_treatment ,media_common.quotation_subject ,Path analysis model ,Percutaneous coronary intervention ,Norwegian ,language.human_language ,3. Good health ,Cardiac procedures ,medicine ,language ,Medical prescription ,business ,Path analysis (statistics) ,Socioeconomic inequalities ,Demography ,media_common - Abstract
It is not known whether inequality in access to cardiac procedures translates into inequality in mortality. In this paper, we use a path analysis model to quantify both the direct effect of socio-economic status on mortality and the indirect effect of socio-economic status on mortality as mediated by the provision of cardiac procedures. The study links microdata from the Finnish and Norwegian national patient registers describing treatment episodes with data from prescription registers, causes-of-death registers and registers covering education and income. We show that socio-economic variables affect access to percutaneous coronary intervention in both countries, but that these effects are only moderate and that the indirect effects of the socio-economic factors on mortality through access to percutaneous coronary intervention are minor. The direct effects of income and education on mortality are significantly larger. We conclude that the socio-economic gradient in the use of percutaneous coronary intervention adds to socio-economic differences in mortality to little or no extent.
- Published
- 2015
11. Using simulation for teaching femoral arterial access: A multicentric collaboration
- Author
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Daniel D. Johnson, Jorge Sanz-Guerrero, Adam Greenbaum, Andrea Jensen, Thomas LaLonde, Stanley Chetcuti, Albert J. Shih, Simon R. Dixon, Milan Seth, and Hitinder S. Gurm
- Subjects
medicine.medical_specialty ,business.industry ,General surgery ,Incidence (epidemiology) ,General Medicine ,Femoral artery ,030204 cardiovascular system & hematology ,Surgery ,Simulation training ,03 medical and health sciences ,0302 clinical medicine ,Femoral access ,medicine.artery ,Cardiac procedures ,medicine ,Academic Training ,Radiology, Nuclear Medicine and imaging ,In patient ,030212 general & internal medicine ,Cardiology and Cardiovascular Medicine ,Complication ,business - Abstract
Objective To assess the impact of simulation training on complications associated with femoral arterial access obtained by first year cardiology fellows. Background: Prior studies demonstrate a higher incidence of arterial access related complications among patients undergoing invasive cardiac procedures. Methods First year cardiology fellows at four teaching hospitals in Michigan tracked their femoral access experience and any associated complications between July 2011 and June 2013. Fellows starting their academic training in July 2012 were first trained on a specially developed simulator before starting their rotation in the catheterization laboratory. The primary outcome was access proficiency, defined as five successful femoral access attempts without any complication or need to seek help from a more experienced team member. Results A total of 1,278 femoral access attempts were made by 21 fellows in 2011–2012 compared with 869 femoral access attempts made by 21 fellows in 2012–2013. There was a lower rate of access related complications in patients undergoing access attempts by first year fellows in year 2 compared with year 1 (2.1% versus 4.5%, P = 0.003) . The number of procedures to achieve procedural proficiency was significantly higher in year 1 compared with year 2 (median 20 versus 10, P = 0.007). Conclusions Incorporation of simulation in the training of first year fellows was associated with an improvement in proficiency and a clinically meaningful reduction in vascular complications. © 2015 Wiley Periodicals, Inc.
- Published
- 2015
12. Blood Conservation in a Congenital Cardiac Surgery Program
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Tracey John, Roslyn Colvin, and Roberta Rodeman
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medicine.medical_specialty ,Heart Diseases ,Blood Loss, Surgical ,Christianity ,Perioperative Nursing ,Cardiac procedures ,Humans ,Medicine ,Blood Transfusion ,Intensive care medicine ,Erythropoietin ,Retrospective Studies ,Surgical team ,Retrospective review ,Blood conservation ,business.industry ,Preoperative screening ,Infant ,Recombinant Proteins ,Cardiac surgery ,Epoetin Alfa ,Medical–Surgical Nursing ,Child, Preschool ,Hematinics ,Bloodless surgery ,business - Abstract
BLOODLESS SURGERY PROGRAMS are being instituted because of increasing public concerns about blood transfusions and the need to accommodate some patients' religious beliefs. Patients' desires to forego transfusion must be identified during the preoperative screening process and subsequently reflected on the surgical consent. PATIENTS ARE MANAGED preoperatively with erythropoietin and dietary supplements. The surgical team employs a variety of intraoperative and postoperative blood conservation techniques to help avoid the need for transfusion. A RETROSPECTIVE REVIEW of congenital cardiac procedures in a blood conservation program confirmed that bloodless cardiac surgery is effective. AORN J 87 (June 2008) 1180-1186. © AORN, Inc, 2008.
- Published
- 2008
13. Performance of magnetic field-guided navigation system for interventional neurosurgical and cardiac procedures
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Demetrius K. Lopes, James C.H. Chu, Yunkai Zhang, Lincoln Hubbard, Damian Bernard, Pamela Reeder, and Wen Chien Hsi
- Subjects
medicine.medical_specialty ,Guide wires ,Sensitivity and Specificity ,Neurosurgical Procedures ,Catheterization ,Magnetics ,Steering angle ,interventional radiology ,Cardiac procedures ,medicine ,Humans ,Medical physics ,Radiology, Nuclear Medicine and imaging ,neurosurgery ,Cardiac Surgical Procedures ,magnetic field navigation ,Instrumentation ,Radiological imaging ,Radiation ,medicine.diagnostic_test ,business.industry ,Reproducibility of Results ,Navigation system ,Interventional radiology ,Equipment Design ,Other Topics ,Equipment Failure Analysis ,Catheter ,Surgery, Computer-Assisted ,Radiology ,business ,Guidance system - Abstract
A hospital‐based magnetic guidance system (MGS) was installed to assist a physician in navigating catheters and guide wires during interventional cardiac and neurosurgical procedures. The objective of this study is to examine the performance of this magnetic field‐guided navigation system. Our results show that the system's radiological imaging components produce images with quality similar to that produced by other modern fluoroscopic devices. The system's magnetic navigation components also deflect the wire and catheter tips toward the intended direction. The physician, however, will have to oversteer the wire or catheter when defining the steering angle during the procedure. The MGS could be clinically useful in device navigation deflection and vessel access. PACS numbers: 07.55.Db, 07.85.‐m
- Published
- 2005
14. Acute symptomatic hyponatremia complicating invasive cardiac procedures: A report of three patients
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Farid Nakhoul, Monther Boulos, Walter Markiewicz, and Jamal Hir
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Adult ,medicine.medical_specialty ,medicine.medical_treatment ,Hyponatremic encephalopathy ,Encephalopathy ,Angioplasty ,Cardiac procedures ,Humans ,Medicine ,Radiology, Nuclear Medicine and imaging ,Cardiac Surgical Procedures ,Intensive care medicine ,Aged ,medicine.diagnostic_test ,business.industry ,Metabolic disorder ,General Medicine ,medicine.disease ,Surgery ,Acute Disease ,Angiography ,Female ,Cardiology and Cardiovascular Medicine ,business ,Hyponatremia ,Complication - Abstract
Hyponatremic encephalopathy is a well-known complication of surgical procedures. This syndrome has not been described in the cardiology literature. We report three patients who developed acute hyponatremia with life-threatening encephalopathy following an invasive cardiac procedure. Diagnosis and treatment were delayed because of a lack of awareness for the syndrome among the cardiology staff. The diagnosis of hyponatremia should be suspected in any patient who develops behavioral or neurological manifestations following an invasive cardiac procedure. Prompt diagnosis and treatment are essential to avoid permanent neurological damage or death.
- Published
- 2001
15. The Minimally Invasive Surgical Approach: A Critical Reappraisal
- Author
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Erwin P. Bauer and Wolf-Peter Klövekorn
- Subjects
medicine.medical_specialty ,Surgical approach ,Bypass grafting ,business.industry ,Postoperative pain ,Surgery ,law.invention ,Cardiac Surgery procedures ,law ,Small incision ,Anesthesia ,Cardiac procedures ,medicine ,Cardiopulmonary bypass ,Radiology, Nuclear Medicine and imaging ,Cardiology and Cardiovascular Medicine ,business ,Mitral valve surgery - Abstract
The use of minimally invasive techniques for cardiac surgery procedures has increased in the last 5 years. The term minimally invasive is used to describe cardiac procedures performed through a small incision or heart surgery performed without cardiopulmonary bypass. A review of the minimally invasive heart surgery literature is presented. According to the literature coronary bypass grafting without cardiopulmonary bypass can be carried out with similar early and mid-term results when compared to coronary bypass grafting with cardiopulmonary bypass. The same is true for LIMA to LAD bypass grafting performed through a lateral mini-thoracotomy. Controversial results are reported regarding morbidity after aortic and mitral valve surgery operated through a mini-incision. Some report less postoperative pain, earlier mobilization, shorter hospital stays, and lower costs. Others did not find any difference between full sternotomy and mini-incisions except a better cosmetic outcome. According to the literature there is no proven advantage of performing open heart surgery minimally invasively except in special situations, such as reoperation or polymorbid patients.
- Published
- 1999
16. Coenzyme Q10improves the tolerance of the senescent myocardium to aerobic and ischemic stress: Studies in rats and in human atrial tissue
- Author
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Ruchong Ou, Franklin L. Rosenfeldt, Justin A. Mariani, Michael Rowland, Phillip Nagley, Anthony W. Linnane, and Salvatore Pepe
- Subjects
Cardiac function curve ,Aging ,medicine.medical_specialty ,Ubiquinone ,Clinical Biochemistry ,Coenzymes ,Myocardial Ischemia ,In Vitro Techniques ,Biochemistry ,Antioxidants ,Mitochondria, Heart ,Rats, Sprague-Dawley ,chemistry.chemical_compound ,Oxygen Consumption ,Internal medicine ,Cardiac procedures ,medicine ,Animals ,Humans ,Heart Atria ,Coenzyme Q10 ,business.industry ,Myocardium ,Heart ,General Medicine ,Atrial tissue ,Functional recovery ,Myocardial Contraction ,Aerobiosis ,In vitro ,Rats ,Surgery ,Work performance ,Ischemic stress ,chemistry ,Cardiology ,Molecular Medicine ,Female ,business - Abstract
The inferior recovery of cardiac function after interventional cardiac procedures in elderly patients compared to younger patients suggests that the aged myocardium is more sensitive to stress. We report two studies that demonstrate an age-related deficit in myocardial performance after aerobic and ischemic stress and the capacity of CoQ10 treatment to correct age-specific diminished recovery of function. In Study 1 the functional recovery of young (4 mo) and senescent (35 mo) isolated working rat hearts after aerobic stress produced by rapid electrical pacing was examined. After pacing, the senescent hearts, compared to young, showed reduced recovery of pre-stress work performance. CoQ10 pretreatment (daily intraperitoneal injections of 4 mg/kg CoQ10 for 6 weeks) in senescent hearts improved their recovery to match that of young hearts. Study 2 tested whether the capacity of human atrial trabeculae (obtained during surgery) to recover contractile function, following ischemic stress in vitro (60 min), is decreased with age and whether this decrease can be reversed by CoQ10. Trabeculae from older individuals (or = 70 yr) showed reduced recovery of developed force after simulated ischemia compared to younger counterparts (70 yr). Notably, this age-associated effect was prevented in trabeculae pretreated in vitro (30 min at 24 degrees C) with CoQ10 (400 MicroM). We measured significantly lower CoQ10 content in trabeculae fromor = 70 yr patients. In vitro pretreatment raised trabecular CoQ10 content to similar levels in all groups. We conclude that, compared to younger counterparts, the senescent myocardium of rats and humans has a reduced capacity to tolerate ischemic or aerobic stress and recover pre-stress contractile performance, however, this reduction is attenuated by CoQ10 pretreatment.
- Published
- 1999
17. Cardiac Anatomy and Physiology: A Review
- Author
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Mary Gavaghan
- Subjects
medicine.medical_specialty ,Perioperative nursing ,Normal anatomy ,business.industry ,Cardiac anatomy ,Hemodynamics ,Physiology ,Heart ,Myocardial Contraction ,Cardiovascular physiology ,Medical–Surgical Nursing ,Coronary circulation ,medicine.anatomical_structure ,Coronary Circulation ,Perioperative Nursing ,Cardiac procedures ,cardiovascular system ,Humans ,Medicine ,business ,Intensive care medicine - Abstract
This article reviews the normal anatomy and physiology of the heart. Understanding the normal anatomic and physiologic relationships described in this article will help perioperative nurses care for patients who are undergoing cardiac procedures. Such knowledge also assists nurses in educating patients about cardiac procedures and about activities that can prevent, reverse, or improve cardiac illness.
- Published
- 1998
18. TU-H-CAMPUS-IeP1-03: Comparison of Monte Carlo Simulation and Conversion Factor Based Method On Estimation of Effective Dose in Pediatric Patients Undergoing Interventional Cardiac Procedures
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S Lee, F Lee, M Wong, K Leung, R Ming Chun Chau, and Y Ng
- Subjects
medicine.diagnostic_test ,business.industry ,Monte Carlo method ,Conversion factor ,General Medicine ,Effective dose (radiation) ,Radiation risk ,Cardiac procedures ,medicine ,Conversion method ,Fluoroscopy ,Nuclear medicine ,business ,Cancer risk - Abstract
Purpose: Interventional cardiac procedures utilize frequent fluoroscopy and cineangiography, which impose considerable radiation risk to patients, especially pediatric patients. Accurate calculation of effective dose is important in order to estimate cancer risk over the rest of their lifetime. This study evaluates the difference in effective dose calculated by Monte Carlo simulation with those estimated by locally-derived conversion factors (CF-local) and by commonly quoted conversion factors from Karambatsakidou et al (CF-K). Methods: Effective dose (E),of 12 pediatric patients, age between 2.5–19 years old, who had undergone interventional cardiac procedures, were calculated using PCXMC-2.0 software. Tube spectrum, irradiation geometry, exposure parameters and dose-area product (DAP) of each projection were included in the software calculation. Effective doses for each patient were also estimated by two Methods: 1) CF-local: conversion factor derived locally by generalizing results of 12 patients, multiplied by DAP of each patient gives E-local. 2) CF-K: selected factor from above-mentioned literature, multiplied by DAP of each patient gives E-K. Results: Mean of E, E-local and E-K were 16.01 mSv, 16.80 mSv and 22.25 mSv respectively. A deviation of −29.35% to +34.85% between E and E-local, while a greater deviation of −28.96% to +60.86% between E and EK were observed. E-K overestimated the effective dose for patients at age 7.5–19. Conclusion: Effective dose obtained by conversion factors is simple and quick to estimate radiation risk of pediatric patients. This study showed that estimation by CF-local may bear an error of 35% when compared with Monte Carlo calculation. If using conversion factors derived by other studies may result in an even greater error, of up to 60%, due to factors that are not catered for in the estimation, including patient size, projection angles, exposure parameters, tube filtration, etc. Users must be aware of these potential inaccuracies when simple conversion method is employed.
- Published
- 2016
19. Non-cardiac procedures after DES: An everyday issue awaiting answers
- Author
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Vinicius Esteves and Pedro A. Lemos
- Subjects
education.field_of_study ,medicine.medical_specialty ,business.industry ,Population ,General Medicine ,equipment and supplies ,medicine.disease ,Optimal management ,Cardiac procedures ,medicine ,Radiology, Nuclear Medicine and imaging ,Medical emergency ,Stent thrombosis ,Cardiology and Cardiovascular Medicine ,education ,Intensive care medicine ,business - Abstract
Key Points Need for non-cardiac surgery is a common event during the follow-up of patients treated drug-eluting stenting. The eventual associated risks of complications (bleeding and stent thrombosis) are relatively low. Larger clinical studies are needed to better delineate the optimal management of this population.
- Published
- 2015
20. Blood loss following invasive cardiac procedures: Going beyond the CBC
- Author
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Carey Kimmelstiel
- Subjects
medicine.medical_specialty ,Blood loss ,business.industry ,Cardiac procedures ,medicine ,Radiology, Nuclear Medicine and imaging ,General Medicine ,Cardiology and Cardiovascular Medicine ,Intensive care medicine ,business - Published
- 2010
21. Trends in in-hospital cardiac procedures following acute myocardial infarction, Australia (1993/94–1998/99)
- Author
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Sushma Mathur
- Subjects
Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,business.industry ,Internal medicine ,Cardiac procedures ,Cardiology ,Electrocardiography in myocardial infarction ,Medicine ,Myocardial infarction ,Cardiology and Cardiovascular Medicine ,business ,medicine.disease - Published
- 2003
22. Pacing Trends over a Decade in a National Registry
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Chi Keong Ching, Daniel Chong, Ling Ling Sim, Reginald Lie, Malik Amit, Boon Yew Tan, and Wee Siong Teo
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medicine.medical_specialty ,Population ageing ,Pediatrics ,Cardiac pacing ,business.industry ,Heart block ,Mean age ,medicine.disease ,Surgery ,Sick sinus syndrome ,Cardiac procedures ,Epidemiology ,medicine ,National registry ,Cardiology and Cardiovascular Medicine ,business - Abstract
Permanent cardiac pacing is the treatment of choice in patients with symptomatic bradyarrhythmias. The SCDB is a prospective registry of interventional cardiac procedures done in Singapore since July 2000. This report looks at the data from NHC during the period from 2000–2010. There were 1724 pacemakers implanted during the 10 year with almost yearly increase in the number of pacemakers implanted at this single centre. The mean age of the patients was 69.86 years+12.2 old (median 71 years old, range 11–98 years). Over the 10 year period, there were more females (54.2% females vs 45.8% males). Sick sinus syndrome remains the most common indication for pacemaker implantation (60.7%) and the second most common indication was AV block (35.3%). This trend was consistently seen over the decade. The number of females was higher in the sick sinus syndrome group (59.8% females vs 40.2% males) whereas the proportion of males was higher in the complete heart block group (46.5% females vs 53.5% males). In conclusion, there is an increase in the number of pacemakers implanted likely due to an aging population. Females remain consistently higher and sick sinus syndrome remains the most important indication for pacing. With the rapidly aging population, it would be expected that this trend would continue to increase over the next decade.
- Published
- 2011
23. Socio-economic Inequality in the Use of Procedures and Mortality Among AMI Patients: Quantifying the Effects Along Different Paths.
- Author
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Hagen TP, Häkkinen U, Iversen T, Klitkou ST, and Moger TA
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Educational Status, Female, Finland epidemiology, Humans, Income, Male, Middle Aged, Models, Statistical, Myocardial Infarction surgery, Myocardial Infarction therapy, Norway epidemiology, Outcome Assessment, Health Care, Percutaneous Coronary Intervention statistics & numerical data, Registries, Young Adult, Healthcare Disparities statistics & numerical data, Myocardial Infarction mortality, Percutaneous Coronary Intervention economics, Social Class
- Abstract
It is not known whether inequality in access to cardiac procedures translates into inequality in mortality. In this paper, we use a path analysis model to quantify both the direct effect of socio-economic status on mortality and the indirect effect of socio-economic status on mortality as mediated by the provision of cardiac procedures. The study links microdata from the Finnish and Norwegian national patient registers describing treatment episodes with data from prescription registers, causes-of-death registers and registers covering education and income. We show that socio-economic variables affect access to percutaneous coronary intervention in both countries, but that these effects are only moderate and that the indirect effects of the socio-economic factors on mortality through access to percutaneous coronary intervention are minor. The direct effects of income and education on mortality are significantly larger. We conclude that the socio-economic gradient in the use of percutaneous coronary intervention adds to socio-economic differences in mortality to little or no extent., (Copyright © 2015 John Wiley & Sons, Ltd.)
- Published
- 2015
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