The aim of this study was to investigate the relationship between QT (QTc) interval, Tp‐e interval, Tp‐e/QTc ratio, 5‐year sudden cardiac death (SCD) risk score, and late gadolinium enhancement (LGE) detected by CMR in hypertrophic cardiomyopathy (HCM) patients.
A total of 74 consecutive patients who underwent CMR with HCM diagnosis were included in the study. These patients were...
Complete heart block (CHB) and acute renal infarction (ARI) are both uncommon diseases and seldom encountered in the clinical practice. We describe a rare case of pre‐existing left bundle branch block, presenting simultaneously with CHB and ARI. The possible mechanism depends on prior presence of either CHB or ARI. If ARI occurs first, severe pain and embolism may enhance the vagal tone resulting...
A prolonged P‐wave duration (PWD) in sinus rhythm pre‐ablation has been hypothesized to be a non‐invasive ECG marker associated with increased atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI). This systematic review and meta‐analysis will assess the latest evidence on the association of prolonged PWD pre‐ablation with AF recurrence after PVI.
Osteogenic circulating endothelial progenitor cells (EPC) play a pathogenic role in cardiovascular system degeneration through promulgating vasculature calcification, but its role in conduction disorders as part of the cardiovascular degenerative continuum remained unknown.
To investigate the role of osteocalcin (OCN)‐expressing circulating EPCs in cardiac conduction disorders in...
As medical education evolves, some traditional teaching methods often get forgotten. For generations, the Lewis ladder diagram (LLD) has helped students understand the mechanisms of cardiac arrhythmias and conduction disorders. Similarly, clinicians have used LLDs to communicate their proposed mechanisms to their colleagues and trainees. In this article, we revisit this technique of constructing the...
Ambulatory electrocardiogram (ECG)‐based microvolt T‐wave alternans values measured by the modified moving average method (MMA‐TWA) can be disrupted by T‐wave changes that mimic true repolarization alternans.
We investigated potential sources of measurement error by studying 19 healthy subjects (12 men; median age, 25) free of known heart disease with 36‐month follow‐up to establish...
Supraventricular arrhythmia diagnosis using the surface electrocardiogram (sECG) is often cumbersome due to limited atrial signal quality. In some instances, use of esophageal electrocardiography (eECG) may facilitate the diagnosis. Here, we present a novel approach to reconstruct cardiac activation maps from eECG recordings.
eECGs and sECGs were recorded from 19 individuals using...
Aortic valve stenosis (AS) generates a chronic pressure overload that induces left ventricular hypertrophy (LVH). The aim of this study was to assess the prevalence of the electrocardiographic criteria for LVH in patients with clinically significant AS and to evaluate the relationship between the ECG criteria for LVH and echocardiographic parameters.
The clinical data of 95 patients...
During early drug development trials, electrocardiograms (ECGs) in healthy volunteers who are in a fasting state are evaluated to screen for possible adverse cardiac effects. However, the effect of the duration of fasting on electrocardiographic parameters is largely unknown. We compared the effects of fasting on standard 12‐lead electrocardiographic recordings.
Mid‐ventricular obstructive hypertrophic cardiomyopathy (MVOHCM) is an uncommon type of HCM. LV apical aneurysms are present in more than 20% MVOHCM cases and has been identified as an independent predictor of potentially lethal arrhythmic events, including non‐sustained or sustained ventricular tachycardia (VT), and ventricular fibrillation (VF), as well as SCD. Although the pathogenesis of LVA...
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