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sudden cardiac death risk factors

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https://www.readbyqxmd.com/read/28916511/failure-to-treat-life-threatening-ventricular-tachyarrhythmias-in-contemporary-implantable-cardioverter-defibrillators-implications-for-strategic-programming
#1
Anna Margrethe Thøgersen, Jacob Moesgaard Larsen, Jens Brock Johansen, Moeen Abedin, Charles D Swerdlow
BACKGROUND: In clinical trials, manufacturer-specific, strategic programming of implantable cardioverter-defibrillators (ICDs), including faster detection rates, reduces unnecessary therapy but permits therapy for ventricular tachycardia/ventricular fibrillation (VF). Present consensus recommends a generic rate threshold between 185 and 200 beats per minute, which exceeds the rate tested in clinical trials for some manufacturers. In a case series, we sought to determine the relationship between programmed parameters and failure of modern ICDs to treat VF...
September 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28916176/risk-stratification-of-sudden-cardiac-death-in-hypertension
#2
Larisa G Tereshchenko, Elsayed Z Soliman, Barry R Davis, Suzanne Oparil
In the United States, up to 450,000 people per year die suddenly; an average of 1 sudden death every 70s. Strategies for preventing sudden cardiac death are urgently needed. Systemic arterial hypertension is a major risk factor for sudden cardiac death and the increasing burden of hypertension is a worldwide problem. The lifetime risk of sudden cardiac death at 30years of age is higher by 30% in individuals with hypertension. Each 20/10mmHg increase in systolic/diastolic blood pressure, is associated with a 20% additional increase in sudden cardiac death risk...
August 14, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28912181/hypertrophic-cardiomyopathy-genetics-pathogenesis-clinical-manifestations-diagnosis-and-therapy
#3
REVIEW
Ali J Marian, Eugene Braunwald
Hypertrophic cardiomyopathy (HCM) is a genetic disorder that is characterized by left ventricular hypertrophy unexplained by secondary causes and a nondilated left ventricle with preserved or increased ejection fraction. It is commonly asymmetrical with the most severe hypertrophy involving the basal interventricular septum. Left ventricular outflow tract obstruction is present at rest in about one third of the patients and can be provoked in another third. The histological features of HCM include myocyte hypertrophy and disarray, as well as interstitial fibrosis...
September 15, 2017: Circulation Research
https://www.readbyqxmd.com/read/28903763/troponin-as-ischemic-biomarker-is-related-with-all-three-echocardiographic-risk-factors-for-sudden-death-in-hypertrophic-cardiomyopathy-esc-guidelines-2014
#4
Rafał Hładij, Renata Rajtar-Salwa, Paweł Petkow Dimitrow
BACKGROUND: Sudden cardiac death (SCD) risk stratification is the most important preventive action in patients with hypertrophic cardiomyopathy (HCM). The identification of the ischemia biomarker high sensitive troponin I (hs-TnI) role for this arrhythmic disease may provide additional information for SCD risk stratification. The aim of the study was to compare echocardiographic parameters (prognostic for risk stratification of SCD in HCM) among two subgroups of HCM patients: with elevated hs-TnI versus non-elevated hs-TnI level...
September 13, 2017: Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/28899734/anaesthetic-management-of-pregnant-patients-with-cardiac-implantable-electronic-devices-case-reports-and-review
#5
REVIEW
M M Salman, H I Kemp, M R Cauldwell, D P Dob, R Sutton
Heart disease is a leading cause of maternal mortality and morbidity. Pregnant women with structural, conduction or degenerative cardiac disease who require rhythm control or who are at high risk of sudden cardiac death may carry a cardiac implantable electronic device or may occasionally require the insertion of one during their pregnancy. These women are now encountered more frequently in clinical practice, and it is essential that a multidisciplinary approach, beginning from the early antenatal phase, be adopted in their counselling and management...
August 4, 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/28882229/care-patterns-and-outcomes-in-atrial%C3%A2-fibrillation-patients-with-and-without-diabetes-orbit-af-registry
#6
Justin B Echouffo-Tcheugui, Peter Shrader, Laine Thomas, Bernard J Gersh, Peter R Kowey, Kenneth W Mahaffey, Daniel E Singer, Elaine M Hylek, Alan S Go, Eric D Peterson, Jonathan P Piccini, Gregg C Fonarow
BACKGROUND: Diabetes is a well-established risk factor for thromboembolism in patients with atrial fibrillation (AF), but less is known about how diabetes influences outcomes among AF patients. OBJECTIVES: This study assessed whether symptoms, health status, care, and outcomes differ between AF patients with and without diabetes. METHODS: The cohort study included 9,749 patients from the ORBIT-AF (Outcomes Registry for Better Informed Treatment of Atrial Fibrillation) registry, a prospective, nationwide, outpatient registry of patients with incident and prevalent AF...
September 12, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28880023/sudden-infant-death-syndrome-and-inherited-cardiac-conditions
#7
REVIEW
Alban-Elouen Baruteau, David J Tester, Jamie D Kapplinger, Michael J Ackerman, Elijah R Behr
Sudden infant death syndrome (SIDS) is the leading cause of post-neonatal infant mortality in developed countries, characterized by the death of infants for no obvious reason and without prior warning. The complex interaction of multiple factors in the pathogenesis of SIDS is illustrated by the 'triple risk hypothesis', which proposed that SIDS results from a convergence of three overlapping risk factors: a critical developmental period, an exogenous stressor, and underlying genetic and/or nongenetic vulnerability in the infant...
September 7, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28874283/mortality-in-adults-with-congenital-heart-disease
#8
Pavithra Naidu, Leeanne Grigg, Dominica Zentner
AIM: Retrospective ascertainment of the causes of mortality in the adult congenital heart disease (ACHD) cohort of the Royal Melbourne Hospital (RMH). METHODS: Deceased patients (n=73) of the 2519 ACHD patients in the Royal Melbourne Hospital registry (commenced in 1991) were identified. Retrospective analysis was undertaken. Age, gender of deceased individuals, and frequency and cause of death in different congenital diagnosis groups was explored. RESULTS: Between 1991 and 2015, death occurred in 3...
October 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28863009/methadone-and-the-qtc-interval-paucity-of-clinically-significant-factors-in-a-retrospective-cohort
#9
Gavin Bart, Zachary Wyman, Qi Wang, James S Hodges, Rehan Karim, Bradley A Bart
OBJECTIVE: Methadone is associated with prolongation of the electrocardiographic QTc interval. QTc prolongation may be linked to cardiac dysrhythmia and sudden cardiac death. The rate of these events is unknown in methadone-maintained patients. METHODS: This retrospective cohort study of 749 patients with opioid use disorder receiving methadone maintenance therapy through a single safety-net hospital, queried the electronic health record for electrocardiogram results, demographics, methadone dose, and diagnostic codes consistent with cardiac conduction disorder (International Classification of Disease, Ninth Revision [ICD-9] 426) and cardiac dysrhythmia (ICD-9 427)...
August 31, 2017: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/28862961/sudden-cardiac-death-in-women-with-suspected-ischemic-heart-disease-preserved-ejection-fraction-and-no-obstructive-coronary-artery-disease-a-report-from-the-women-s-ischemia-syndrome-evaluation-study
#10
Puja K Mehta, B Delia Johnson, Tanya S Kenkre, Wafia Eteiba, Barry Sharaf, Carl J Pepine, Steven E Reis, William J Rogers, Sheryl F Kelsey, Diane V Thompson, Vera Bittner, George Sopko, Leslee J Shaw, C Noel Bairey Merz
BACKGROUND: Sudden cardiac death (SCD) is often the first presentation of ischemic heart disease; however, there is limited information on SCD among women with and without obstructive coronary artery disease (CAD). We evaluated SCD incidence in the WISE (Women's Ischemia Syndrome Evaluation) study. METHODS AND RESULTS: Overall, 904 women with suspected ischemic heart disease with preserved ejection fraction and core laboratory coronary angiography were followed for outcomes...
August 21, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28852203/presence-of-obesity-is-associated-with-lower-mortality-in-elderly-patients-with-implantable-cardioverter-defibrillator
#11
A Jahangir, M Mirza, M Shahreyar, T Mengesha, R Shearer, S Sultan, A Jahangir, I Choudhuri, V Nangia, A Dhala, A Bhatia, I Niazi, J Sra, A J Tajik
BACKGROUND: Higher body mass index (BMI) is associated with greater prevalence of cardiovascular risk factors, yet an inverse relationship between obesity and survival after cardiovascular events has been described. It is unclear whether a similar relationship exists for patients with implantable cardioverter defibrillators (ICD) at high risk for mortality. We aimed to assess the impact of BMI on mortality and cardiovascular hospitalization in patients with ICD. METHODS: Patients who underwent ICD implantation in 2010-2011 were divided into normal (<25 kg/m(2)), overweight (25-29...
August 30, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28835837/atrial-fibrillation-and-anticoagulation-in-hypertrophic-cardiomyopathy
#12
C Fielder Camm, A John Camm
Hypertrophic cardiomyopathy (HCM) represents a common inherited cardiac disorder with well-known complications Including stroke and sudden cardiac death. There is a recognised association between HCM and the development of AF. This review describes the epidemiology of AF within the HCM population and analyses the risk factors for the development of AF. It further discusses the outcomes associated with AF in this population, including the evidence in support of higher stroke risk in patients with HCM with AF compared with the general AF population...
June 2017: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/28835834/supraventricular-arrhythmias-in-patients-with-adult-congenital-heart-disease
#13
Carina Blomström Lundqvist, Tatjana S Potpara, Helena Malmborg
An increasing number of patients with congenital heart disease survive to adulthood; such prolonged survival is related to a rapid evolution of successful surgical repairs and modern diagnostic techniques. Despite these improvements, corrective atrial incisions performed at surgery still lead to subsequent myocardial scarring harbouring a potential substrate for macro-reentrant atrial tachycardia. Macroreentrant atrial tachycardias are the most common (75 %) type of supraventricular tachycardia (SVT) in patients with adult congenital heart disease (ACHD)...
June 2017: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/28835363/the-metabolic-syndrome-and-risk-of-sudden-cardiac-death-the-atherosclerosis-risk-in-communities-study
#14
Paul L Hess, Hussein R Al-Khalidi, Daniel J Friedman, Hillary Mulder, Anna Kucharska-Newton, Wayne R Rosamond, Renato D Lopes, Bernard J Gersh, Daniel B Mark, Lesley H Curtis, Wendy S Post, Ronald J Prineas, Nona Sotoodehnia, Sana M Al-Khatib
BACKGROUND: Prior studies have demonstrated a link between the metabolic syndrome and increased risk of cardiovascular mortality. Whether the metabolic syndrome is associated with sudden cardiac death is uncertain. METHODS AND RESULTS: We characterized the relationship between sudden cardiac death and metabolic syndrome status among participants of the ARIC (Atherosclerosis Risk in Communities) Study (1987-2012) free of prevalent coronary heart disease or heart failure...
August 23, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28826898/relation-of-chronic-obstructive-pulmonary-disease-to-cardiovascular-disease-in-the-general-population
#15
Shinjeong Song, Pil-Sung Yang, Tae-Hoon Kim, Jae-Sun Uhm, Hui-Nam Pak, Moon-Hyoung Lee, Boyoung Joung
Chronic obstructive pulmonary disease (COPD) is a major health problem that contributes to substantial morbidity and mortality globally. This study investigated the relation between COPD and the risk of cardiovascular disease in the general population. We evaluated the cardiovascular effect of COPD using Korean National Health Insurance Service data from 2002 to 2013. We compared selected cardiovascular disease risk factors depending on pulmonary function using the Korean Health and Nutritional Examination Survey (KNHANES, n = 24,429) data...
July 25, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28817488/risk-management-of-hospitalized-psychiatric-patients-taking-multiple-qtc-prolonging-drugs
#16
Eline Vandael, Bert Vandenberk, Rik Willems, Johan Reyntens, Joris Vandenberghe, Veerle Foulon
PURPOSE/BACKGROUND: Drug-related QTc prolongation has been linked with Torsade de Pointes and sudden cardiac death. The objective of this study was to investigate the impact of starting an additional QTc-prolonging drug on the QTc interval of psychiatric inpatients. METHODS: An observational study was performed between May 2011 and December 2014 in 6 Belgian psychiatric hospitals. Inpatients who were already taking 1 QTc-prolonging drug or more could be included in the study when an additional QTc-prolonging drug was started...
August 16, 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28808933/cardiovascular-disease-in-clozapine-treated-patients-evidence-mechanisms-and-management
#17
REVIEW
Kathlyn J Ronaldson
Myocarditis occurs in about 3% of those initiated on clozapine but monitoring reduces the risk of serious outcome. Cardiomyopathy may develop after myocarditis, or from prolonged tachycardia. Monitoring using echocardiography is not deemed cost effective. Tachycardia, orthostatic hypotension and reduced heart rate variability are a group of clozapine-related adverse effects associated with autonomic dysfunction and may have serious consequences in the long term. Elevated heart rate and poor heart rate variability can be treated with a β-blocker or a non-dihydropyridine calcium channel blocker, while orthostatic hypotension can be alleviated by increased fluid intake and abdominal binding, but may require pharmacological intervention...
August 14, 2017: CNS Drugs
https://www.readbyqxmd.com/read/28805463/oxygen-uptake-at-aerobic-threshold-is-inversely-associated-with-fatal-cardiovascular-and-all-cause-mortality-events
#18
Setor K Kunutsor, Sudhir Kurl, Hassan Khan, Francesco Zaccardi, Rainer Rauramaa, Jari A Laukkanen
PURPOSE: We aimed to assess the associations of oxygen uptake at aerobic threshold (VO2 at AT) with cardiovascular and all-cause mortality. DESIGN: VO2 at AT was assessed in 1,663 middle-aged men in a cohort study. Hazard ratios (HRs) were calculated for sudden cardiac death (SCD), fatal coronary heart disease (CHD) and cardiovascular disease (CVD), and all-cause mortality. RESULTS: During a median follow-up of 25.6 years, 138 SCDs, 209 fatal CHDs, 333 fatal CVDs, and 719 all-cause mortality events occurred...
August 14, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28794139/denervated-myocardium-is-preferentially-associated-with-sudden-cardiac-arrest-in-ischemic-cardiomyopathy-a-pilot-competing-risks-analysis-of-cause-specific-mortality
#19
James A Fallavollita, Jonathan D Dare, Randolph L Carter, Sunil Baldwa, John M Canty
BACKGROUND: Previous studies have identified multiple risk factors that are associated with total cardiac mortality. Nevertheless, identifying specific factors that distinguish patients at risk of arrhythmic death versus heart failure could better target patients likely to benefit from implantable cardiac defibrillators, which have no impact on nonsudden cardiac death. METHODS AND RESULTS: We performed a pilot competing risks analysis of the National Institutes of Health-sponsored PAREPET trial (Prediction of Arrhythmic Events with Positron Emission Tomography)...
August 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28782696/heritability-in-a-scn5a-mutation-founder-population-with-increased-female-susceptibility-to-non-nocturnal-ventricular-tachyarrhythmia-and-sudden-cardiac-death
#20
Rachel M A Ter Bekke, Aaron Isaacs, Andrei Barysenka, Marije B Hoos, Jan D H Jongbloed, Jan C A Hoorntje, Alfons S M Patelski, Apollonia T J M Helderman-van den Enden, Arthur van den Wijngaard, Monika Stoll, Paul G A Volders
BACKGROUND: Heritable cardiac sodium channel dysfunction is associated with various arrhythmia syndromes, some predisposing to ventricular fibrillation. Phenotypic diversity among carriers of identical-by-descent mutations is often remarkable, suggesting influences of genetic modifiers. OBJECTIVE: The purpose of this study was to identified a unique SCN5A-mutation founder population with mixed clinical phenotypes and sudden cardiac death, and to investigate the heritability of electromechanical traits besides the SCN5A-mutation effect...
August 3, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
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