Widening of the QRS complex during the wide complex tachycardia: What is the mechanism?

Autor:	Ahmet O. Aslan, Idriz Merovci, Abdullah Tunçez, Fatih Oksuz, Ertan A. Al, Meryem Kara, Elif H. Ozcan Cetin, Ahmet Korkmaz, Ozcan Ozeke, Serkan Cay, Firat Ozcan, Dursun Aras, Serkan Topaloglu
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	Electrocardiography Ventricular Tachycardia Physiology (medical) Tachycardia Tachycardia-Induced Tachycardia Catheter Ablation Atrioventricular Nodal Reentrant Tachycardia Humans Tachycardia Atrioventricular Nodal Reentry Double Tachycardia Cardiology and Cardiovascular Medicine
Popis:	A28‐year‐old woman underwent an electrophysiology study (EPS)because of episodes of palpitations with documented narrow (NCT)and wide QRS complex tachycardia (WCT) on a 24‐hHolterECG.During the EPS, the patient was in sinus rhythm (SR) with normalatrio‐His (AH) and His‐ventricular (HV) intervals of 45 and 55 ms,respectively. The intracardiac electrograms of the tachycardia duringthe spontaneous transition from a WCT with a right bundle branchblock (BBB) morphology (first WCT, f‐WCT) to a wider right BBB one(second WCT, s‐WCT) are shown in Figure1. Spontaneous conversionbetween the s‐WCT and the f‐WCT has also been detected during theEPS (Figure2). What is the underlying mechanism?
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0d15c609d0f7c2ba2f34a9cee8ef49e https://hdl.handle.net/20.500.12511/10113 Zobrazit plný text záznamu