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https://www.readbyqxmd.com/read/28931939/survival-and-prognostic-factors-in-hypertrophic-cardiomyopathy-a-meta-analysis
#1
Qun Liu, Diandian Li, Alan E Berger, Roger A Johns, Li Gao
Hypertrophic cardiomyopathy (HCM) is a clinically and genetically heterogeneous disorder but data on survival rates are still conflicting and have not so far been quantitatively reviewed. The aim of this study is to conduct a meta-analysis of cohort studies to assess pooled survival rates and prognostic factors for survival in patients with HCM. Nineteen studies were included representing 12,146 HCM patients. The pooled 1-, 3-, 5- and 10-year survival rates were 98.0%, 94.3%, 82.2% and 75.0%, respectively. Among patients with HCM, age, NYHA functional class, family history of sudden death (FHSD), syncope, atrial fibrillation, non-sustained ventricular tachycardia (nsVT), maximum left ventricular wall thickness and obstruction were significant prognostic factors for cardiovascular death...
September 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928273/men-over-40-are-most-at-risk-of-sudden-death-during-triathlons
#2
Jacqui Wise
No abstract text is available yet for this article.
September 19, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28928257/sudden-death-and-acute-myocarditis-a-unique-forensic-case-of-double-origin-of-coronary-arteries
#3
Isabella Aquila, Pietro Tarzia, Pietrantonio Ricci, Santo Gratteri
No abstract text is available yet for this article.
September 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28921787/myocardial-bridging-is-associated-with-exercise-induced-ventricular-arrhythmia-and-increases-in-qt-dispersion
#4
Makiko Nishikii-Tachibana, Vedant S Pargaonkar, Ingela Schnittger, Francois Haddad, Ian S Rogers, Jennifer A Tremmel, Paul J Wang
BACKGROUND: A myocardial bridge (MB) has been associated with ventricular arrhythmia and sudden death during exercise. QT dispersion (QTd) is a measure of abnormal repolarization and may predict ventricular arrhythmia. We investigated the frequency of ventricular arrhythmias during exercise and the QTd at rest and after exercise, in patients with an MB compared to a normal cohort. METHODS: We studied the rest and stress ECG tracings of patients with an MB suspected by focal septal buckling on exercise echocardiography (EE) (Echo-MB group, N = 510), those with an MB confirmed by another examination (MB group, N = 110), and healthy controls (Control group, N = 198)...
September 18, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28919378/sudden-death-mechanisms-in-non-ischemic-cardiomyopathies-insights-gleaned-from-clinical-implantable-cardioverter-defibrillator-trials
#5
Benjamin A Steinberg, Siva K Mulpuru, James C Fang, Bernard J Gersh
Sudden cardiac death (SCD) represents a major cause of death among patients with heart failure. While scar-based, macro-reentrant ventricular tachycardia and ventricular fibrillation (VT/VF) is the primary etiology for SCD among patients with ischemic cardiomyopathy, a more diverse set of mechanisms and substrates are likely at play for the diverse group of patients characterized by non-ischemic, dilated cardiomyopathy (NICM). These causes may include scar-based re-entry, but also neurohormonal stimulation (sympathetic, parasympathetic, renin-angiotensin-aldosterone), inflammation, and non-arrhythmic processes occurring in the context of a genetic predisposition...
September 14, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28918379/infanrix-hexa-and-sudden-death-a-review-of-the-periodic-safety-update-reports-submitted-to-the-european-medicines-agency
#6
Jacob Puliyel, C Sathyamala
There have been a number of spontaneous reports of sudden unexpected death soon after the administration of Infanrix hexa (combined diphtheria, tetanus, acellular pertussis, hepatitis B, inactivated poliomyelitis and Haemophilus influenza type B vaccine). The manufacturer, GlaxoSmithKline (GSK), submits confidential periodic safety update reports (PSURs) on Infanrix hexa to the European Medicines Agency (EMA). The latest is the PSUR 19. Each PSUR contains an analysis of observed/expected sudden deaths, which shows that the number of observed deaths soon after immunisation is lower than that expected by chance...
September 5, 2017: Indian Journal of Medical Ethics
https://www.readbyqxmd.com/read/28917495/complications-associated-with-implantable-cardioverter-defibrillators-in-adults-with-congenital-heart-disease-or-left-ventricular-noncompaction-cardiomyopathy-from-the-ncdr-%C3%A2-implantable-cardioverter-defibrillator-registry
#7
Marye J Gleva, Yongfei Wang, Jeptha P Curtis, Charles I Berul, Charles B Huddleston, Jeanne E Poole
Patients with childhood heart disease are living longer and entering adulthood, and may undergo implantable cardioverter-defibrillator (ICD) implantation to reduce the risk of sudden death. We evaluated the characteristics of adult patients with congenital heart disease or left ventricular noncompaction cardiomyopathy (LVNC) in the National Cardiovascular Disease Registry ICD Registry and determined ICD-related in-hospital complications. Patients with LVNC or transposition of the great arteries, tetralogy of Fallot, Ebstein's anomaly, atrial septal defect, ventricular septal defect, or common ventricle were identified in the registry...
August 8, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28916640/clinical-profile-and-consequences-of-atrial-fibrillation-in-hypertrophic-cardiomyopathy
#8
Ethan J Rowin, Anais Hausvater, Mark S Link, Patrick Abt, William Gionfriddo, Wendy Wang, Hassan Rastegar, N A Mark Estes, Martin S Maron, Barry J Maron
Background -Atrial fibrillation (AF), the most common sustained arrhythmia in hypertrophic cardiomyopathy (HCM), is capable of producing symptoms that impact quality of life and is associated with risk for embolic stroke. However, the influence of AF on clinical course and outcome in HCM remains incompletely resolved. Methods -Records were accessed of 1558 consecutive patients followed at the Tufts Medical Center Hypertrophic Cardiomyopathy Institute for 4.8 ± 3.4 years, from 2004 to 2014. Results -Of the 1558 HCM patients, 304 (20%) had episodes of AF, of which 226 (74%) were confined to symptomatic paroxysmal AF (PAF; average 5 ± 5; range 1 to > 20), while 78 (26%) developed permanent AF, preceded by 7 ± 6 PAF episodes...
September 15, 2017: Circulation
https://www.readbyqxmd.com/read/28916511/failure-to-treat-life-threatening-ventricular-tachyarrhythmias-in-contemporary-implantable-cardioverter-defibrillators-implications-for-strategic-programming
#9
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
#10
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/28914638/long-term-risk-and-predictors-of-cardiovascular-death-in-stable-coronary-artery-disease-the-coronor-study
#11
Christophe Bauters, Olivier Tricot, Thibaud Meurice, Nicolas Lamblin
BACKGROUND: There is limited knowledge on the residual risk of cardiovascular death (CVD) in patients with stable coronary artery disease (CAD) who receive modern secondary prevention. Our aim was to analyze the causes of death and to determine predictors of CVD in the 5-year CORONOR registry. METHODS: We studied 4184 consecutive CAD outpatients who were free from any myocardial infarction (MI) or coronary revascularization for more than 1 year at inclusion. Antithrombotics were prescribed in 99%, statins in 92%, inhibitors of renin-angiotensin system in 82%, and β-blockers in 79%; 86% had prior coronary revascularization...
September 13, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28912206/clinical-yield-of-familial-screening-after-sudden-death-in-young-subjects-the-french-experience
#12
Pauline Quenin, Florence Kyndt, Philippe Mabo, Jacques Mansourati, Dominique Babuty, Aurélie Thollet, Béatrice Guyomarch, Richard Redon, Julien Barc, Jean-Jacques Schott, Frederic Sacher, Vincent Probst, Jean Baptiste Gourraud
BACKGROUND: After sudden cardiac death with negative autopsy, clinical screening of relatives identifies a high proportion of inherited arrhythmia syndrome. However, the efficacy of this screening in families not selected by autopsy has never been assessed. We aim to investigate the value of clinical screening in relatives of all subjects who died suddenly before 45 years of age. METHODS AND RESULTS: One hundred and three consecutive families who experienced unexplained sudden cardiac death before 45 years of age were included from May 2009 to December 2014 in a prospective multicenter registry...
September 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/28912187/pediatric-cardiomyopathies
#13
REVIEW
Teresa M Lee, Daphne T Hsu, Paul Kantor, Jeffrey A Towbin, Stephanie M Ware, Steven D Colan, Wendy K Chung, John L Jefferies, Joseph W Rossano, Chesney D Castleberry, Linda J Addonizio, Ashwin K Lal, Jacqueline M Lamour, Erin M Miller, Philip T Thrush, Jason D Czachor, Hiedy Razoky, Ashley Hill, Steven E Lipshultz
Pediatric cardiomyopathies are rare diseases with an annual incidence of 1.1 to 1.5 per 100 000. Dilated and hypertrophic cardiomyopathies are the most common; restrictive, noncompaction, and mixed cardiomyopathies occur infrequently; and arrhythmogenic right ventricular cardiomyopathy is rare. Pediatric cardiomyopathies can result from coronary artery abnormalities, tachyarrhythmias, exposure to infection or toxins, or secondary to other underlying disorders. Increasingly, the importance of genetic mutations in the pathogenesis of isolated or syndromic pediatric cardiomyopathies is becoming apparent...
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
#14
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/28901960/sudden-death-in-an-adult-due-to-nontraumatic-diaphragmatic-hernia
#15
Hideaki Kato, Yasuhiro Aoki, Jun Ohtaki, Yoshimi Nakamura, Mohammed Hassan Gaballah, Mamiko Fukuta, Katsumasa Kobayashi
Sudden death due to diaphragmatic hernia in an adult is exceptionally rare. A 43-year-old man was found dead by his cohabiting mother, lying supine on the floor in his house. He had complained of epigastric discomfort for 1 month, and respiratory symptoms occurred 1 day before his death. He had no history of trauma. Postmortem computed tomography scan revealed the enlarged fluid-filled stomach herniated into the left pleural cavity, compressing the left lung with a mediastinal shift to the right. At autopsy, the left pleural cavity was occupied by herniated abdominal contents with mediastinal shift...
September 9, 2017: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/28901586/long-term-effects-of-cardiac-resynchronization-therapy-on-electrical-remodeling-in-heart-failure-a-prospective-study
#16
Bharatraj Banavalikar, Anees Thajudeen, Narayanan Namboodiri, Krishna Kumar Mohanan Nair, Abhilash Srivilasam Pushpangadhan, Ajit Kumar Valaparambil
INTRODUCTION: Effects of cardiac resynchronization therapy (CRT) on arrhythmogenicity and sudden death have not been fully ascertained. CRT has been shown to increase transmural dispersion of repolarization (TDR) immediately on implantation, that may favorably remodel on long-term follow-up. However, such a hypothesis has not been prospectively evaluated. METHODS AND RESULTS: We included 35 consecutive patients who underwent CRT implantation between September 2013 & August 2014 (mean age 56...
September 13, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28894449/type-i-interferon-induced-by-streptococcus-suis-serotype-2-is-strain-dependent-and-may-be-beneficial-for-host-survival
#17
Jean-Philippe Auger, Agustina Santinón, David Roy, Karen Mossman, Jianguo Xu, Mariela Segura, Marcelo Gottschalk
Streptococcus suis serotype 2 is an important porcine bacterial pathogen and emerging zoonotic agent mainly responsible for sudden death, septic shock, and meningitis, with exacerbated inflammation being a hallmark of the infection. However, serotype 2 strains are genotypically and phenotypically heterogeneous, being composed of a multitude of sequence types (STs) whose virulence greatly varies: the virulent ST1 (Eurasia), highly virulent ST7 (responsible for the human outbreaks in China), and intermediate virulent ST25 (North America) are the most important worldwide...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28889247/guidelines-for-autopsy-investigation-of-sudden-cardiac-death-2017-update-from-the-association-for-european-cardiovascular-pathology
#18
Cristina Basso, Beatriz Aguilera, Jytte Banner, Stephan Cohle, Giulia d'Amati, Rosa Henriques de Gouveia, Cira di Gioia, Aurelie Fabre, Patrick J Gallagher, Ornella Leone, Joaquin Lucena, Lubov Mitrofanova, Pilar Molina, Sarah Parsons, Stefania Rizzo, Mary N Sheppard, Maria Paz Suárez Mier, S Kim Suvarna, Gaetano Thiene, Allard van der Wal, Aryan Vink, Katarzyna Michaud
Although sudden cardiac death (SCD) is one of the most important modes of death in Western countries, pathologists and public health physicians have not given this problem the attention it deserves. New methods of preventing potentially fatal arrhythmias have been developed and the accurate diagnosis of the causes of SCD is now of particular importance. Pathologists are responsible for determining the precise cause and mechanism of sudden death but there is still considerable variation in the way in which they approach this increasingly complex task...
September 9, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28888522/sleep-disordered-breathing-and-heart-failure-what-does-the-future-hold
#19
REVIEW
Martin R Cowie, Angela M Gallagher
Most patients with heart failure (HF) have sleep-disordered breathing (SDB), with central (rather than obstructive) sleep apnea becoming the predominant form in patients with more severe disease. Cyclical apnea and hypopneas are associated with sleep disturbance, hypoxemia, hemodynamic changes, and sympathetic activation. These patients have a worse prognosis than those without SDB. Mask-based therapies of positive airway pressure targeted at SDB can improve measures of sleep quality and can partially normalize the sleep and respiratory physiology...
August 30, 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/28887330/age-and-strain-related-aberrant-ca-2-release-is-associated-with-sudden-cardiac-death-in-the-actc-e99k-mouse-model-of-hypertrophic-cardiomyopathy
#20
Christina Rowlands, Thomas Owen, Saheed Lawal, Shuangyi Cao, Samata Pandey, Hsiang-Yu Yang, Weihua Song, Ross Wilkinson, Anita Alvarez-Laviada, Katja Gehmlich, Steven Marston, Kenneth T MacLeod
Patients with hypertrophic cardiomyopathy (HCM), particularly young adults, can die from arrhythmia but the mechanism underlying abnormal rhythm formation remains unknown. C57Bl6 x CBA/Ca mice carrying a cardiac actin (ACTC) E99K (Glu99Lys) mutation reproduce many aspects of human HCM including increased myofilament Ca(2+) sensitivity and sudden death in a proportion (up to 40%) of young (28-40 day old) animals. We studied the hearts of transgenic (TG - ACTC E99K) mice and their non-transgenic (NTG) littermates when they were in their vulnerable period (28-40 days old) and when they were adult (8-12 weeks old)...
September 8, 2017: American Journal of Physiology. Heart and Circulatory Physiology
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