Quantification of left atrial function in patients with non-obstructive hypertrophic cardiomyopathy by cardiovascular magnetic resonance feature tracking imaging: a feasibility and reproducibility study

Atrial fibrillation (AF) is the most common arrhythmia in hypertrophic cardiomyopathy (HCM) and is associated with adverse outcomes in HCM patients. Although the left atrial (LA) diameter has consistently been...
Source: Journal of Cardiovascular Magnetic Resonance - Category: Radiology Authors: Tags: Research Source Type: research

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Discussion Tachycardia is a rapid heart rate that is above normal for age and level of exertion. Tachycardia is common, particularly sinus tachycardia due to normally encountered circumstances such as pain, fever or exercise. It is usually a normal physiologic process but sustained tachycardia often indicates a potentially abnormal underlying cause. Sinus tachycardia has a rapid heart rate with normal P waves and P-R intervals and variations from moment to moment and respiration. Generally it is not over 200 beats/minute. Vagal stimulation can slow the heart rate; this is a gradual slowing, not an abrupt slowing seen in ...
Source: PediatricEducation.org - Category: Pediatrics Authors: Tags: Uncategorized Source Type: news
We examined frequency, clinical characteristics and AF‐related management and outcomes amongst this patient population.MethodsWe retrospectively studied consecutive probands with inherited cardiomyopathy (n=962) and inherited arrhythmia syndromes (n=195) evaluated between 2002 ‐2018.ResultsAF was observed in 5 ‐31% of patients, with the highest frequency in HCM. Age of AF onset was 45.8 ± 21.9 years in the inherited arrhythmia syndromes compared to 53.3 ± 15.3 years in the inherited cardiomyopathies, with 4 CPVT patients developing AF at median age of 20 years. Overall, 11% of patients with AF had a t r...
Source: Journal of Cardiovascular Electrophysiology - Category: Cardiology Authors: Tags: ORIGINAL ARTICLE Source Type: research
Publication date: Available online 19 November 2019Source: Pharmacological ResearchAuthor(s): Nebojša Mujović, Dobromir Dobrev, Milan Marinković, Vincenzo Russo, Tatjana S. PotparaAbstractAmiodarone is an iodinated benzofuran derivative, a highly lipophilic drug with unpredictable pharmacokinetics. Although originally classified as a class III agent due to its ability to prolong refractoriness in cardiac regions and prevent/terminate re-entry, amiodarone shows antiarrhythmic properties of all four antiarrhythmic drug classes. Amiodarone is a potent coronary and peripheral vasodilator and can be safely used in pati...
Source: Pharmacological Research - Category: Drugs & Pharmacology Source Type: research
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Source: Journal of Cardiovascular Electrophysiology - Category: Cardiology Authors: Tags: ARRHYTHMIA ROUNDS Source Type: research
ConclusionsIn patients with HCM undergoing AF ablation, QTc prolongation, specifically>448 ms, and presence of fQRS are independent risk factors for arrhythmia recurrence at follow ‐up. The combination of these two parameters has greater predictive value and would help to identify patients who are at the highest risk of procedural failure.This article is protected by copyright. All rights reserved.
Source: Journal of Cardiovascular Electrophysiology - Category: Cardiology Authors: Tags: ORIGINAL ‐ CLINICAL Source Type: research
Background: The prevalence of atrial fibrillation (AF) has not been well described in young patients with inherited heart diseases such as the inherited cardiomyopathies: hypertrophic cardiomyopathy (HCM), familial dilated cardiomyopathy (DCM), arrhythmogenic right ventricular cardiomyopathy (ARVC), left ventricular non-compaction (LVNC); or inherited arrhythmia syndromes including long QT syndrome (LQTS), Brugada syndrome (BrS) or catecholaminergic polymorphic ventricular tachycardia (CPVT).
Source: Heart, Lung and Circulation - Category: Cardiology Authors: Tags: 455 Source Type: research
Conclusion: These findings limit the possible roles of gene transcriptional changes in previously reported age-dependent pro-arrhythmic electrophysiologial changes observed in Pgc-1β-/- atria to an altered Ca2+-ATPase (Atp2a2) expression. This directly parallels previously reported arrhythmic mechanism associated with p21-activated kinase type 1 deficiency. This could add to contributions from the direct physiological outcomes of mitochondrial dysfunction, whether through reactive oxygen species (ROS) production or altered Ca2+ homeostasis. Introduction Atrial arrhythmias constitute a major public health probl...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
Abstract BACKGROUND: Chronic hepatitis C virus (HCV) infection is associated with higher risk of cardiovascular events than chronic hepatitis B virus (HBV). We aimed to investigate whether there is higher risk of arrhythmia in HCV infection. METHODS: Electronic medical records from National Health Institute Research Database during 2000-2012 were retrieved for patients with HBV or HCV. Patients with missing information, aged
Source: Journal of Cardiology - Category: Cardiology Authors: Tags: J Cardiol Source Type: research
Authors: Liu L, Wu L, Zheng L, Ding L, Chen G, Fan X, Yao Y Abstract Atrial fibrillation (AF) is the most common arrhythmia in patients with hypertrophic cardiomyopathy (HCM). Data regarding the correlations of biomarkers and AF in HCM patients are rather limited. We sought to explore the associations between the presence of AF and circulating biomarkers reflecting cardiovascular function (N-terminal pro-brain natriuretic peptide, NT-pro BNP), endothelial function (big endothelin-1, big ET-1), inflammation (high-sensitivity C-reactive protein), and myocardial damage (cardiac troponin I, cTnI) in HCM patients with a...
Source: International Heart Journal - Category: Cardiology Tags: Int Heart J Source Type: research
Hypertrophic cardiomyopathy (HCM) is associated with arrhythmias and cardiovascular death. Obstructive sleep apnea (OSA) is highly prevalent and independently associated with atrial fibrillation among patients with HCM.
Source: Heart Rhythm - Category: Cardiology Authors: Source Type: research
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