Koren Hyogene Kwag^1,*, Ibrahim Kak¹, Ying Li², Walid Khass¹, Alec McKechnie¹, Oksana Nulman¹, Brande Brown¹, Manoj Chhabra¹

Congenital Heart Disease, Vol.19, No.1, pp. 107-121, 2024, DOI:10.32604/chd.2024.045953

Abstract Objective: Accurate measurement of QT interval, the ventricular action potential from depolarization to repolarization, is important for the early detection of Long QT syndrome. The most effective QT correction (QTc) formula has yet to be determined in the pediatric population, although it has intrinsically greater extremes in heart rate (HR) and is more susceptible to errors in measurement. The authors of this study compare six different QTc methods (Bazett, Fridericia, Framingham, Hodges, Rautaharju, and a computer algorithm utilizing the Bazett formula) for consistency against variations in HR and RR interval. Methods: Descriptive Retrospective Study. We included participants from a pediatric… More >

Ying Yang^1,#, Tingting Lv^2,#, Siyuan Li¹, Ping Zhang^1,2,*

Congenital Heart Disease, Vol.17, No.5, pp. 557-567, 2022, DOI:10.32604/CHD.2021.017292

Abstract Background: T-wave alternans (TWA) is a risk factor of ventricular arrhythmias or sudden cardiac death (SCD) in patients with ischemic cardiomyopathy. Nevertheless, the relationship between TWA and adverse cardiac events (ACE) in patients with congenital long QT syndrome (LQT) remains controversial. Methods: A systematic electronic search of PubMed, Embase and the Cochrane Library was conducted from database inception dates to 28 April 2021 and assessed the relationship between TWA and ACE in patients with LQTS. Sub-group analysis evaluated the association between microvolt TWA (MTWA) and ACE in different monitoring models and ECGlead numbers. Results: A pooled analysis of seven studies… More >

Alessandro Sgrò¹, Thomas M. Drake², Pedro Lopez‐Ayala³, Kevin Phan⁴

Congenital Heart Disease, Vol.14, No.6, pp. 1102-1112, 2019, DOI:10.1111/chd.12855

Abstract Background: Left cardiac sympathetic denervation (LCSD) has been proposed as useful therapy for long QT syndrome (LQTS) and catecholaminergic polymorphic ventricular tachycardia (CPVT), in addition to anti‐arrhythmic agents and implant‐ able cardioverter defibrillators. This study aimed to assess the current evidence for LCSD and compare the open vs the video‐assisted thoracoscopic surgery (VATS) approaches.
Methods: MEDLINE, Embase and Cochrane library databases were searched up to December 2018 for studies reporting the long‐term outcomes of LCSD in LQTS, CPVT patients. The incidence of cardiac events (CEs) before and after surgery, the change in QTc interval, and surgical complications were pooled to… More >