title: Circadian pattern of ventricular tachycardia episodes in patients with Chagas heart disease.
abstract: Chronic Chagas' cardiomyopathy (CCM) causes ventricular arrhythmias and sudden death, and constitutes the most frequent cause of death in many endemic areas. The circadian variation in the incidence of ventricular arrhythmias and sudden death differs according to the substrate (e.g., morning and evening peaks in ischemic heart disease and non-Chagasic dilated cardiomyopathy). Third generation implantable cardioverter defibrillators (ICDs) have the ability to store the time and date of each ventricular tachycardia (VT) episode, enabling the patterns of ventricular tachyarrhythmia occurrence to be analyzed. The aim of our study was to evaluate the circadian variation of spontaneous VT in recipients of an ICD with CCM.
authors: Section of Electrophysiology, Division of Cardiology, Argerich Hospital, Buenos Aires, Argentina.
authors: Silvia Nascimento
authors: SN
authors: de Freitas
authors: Waleska Teixeira
authors: WT
authors: Caiaffa
authors: Cibele Comini
authors: CC
authors: César
authors: Valéria Andrade
authors: VA
authors: Faria
authors: Raimundo Marques
authors: RM
authors: do Nascimento
authors: George Luiz Lins Machado
authors: GL
authors: Coelho
authors: Mauricio
authors: M
authors: Abello
authors: Jorge
authors: J
authors: González-Zuelgaray
authors: Maria E
authors: ME
authors: Daglio
authors: Carlos
authors: C
authors: Lopez
authors: Sebastián
authors: S
authors: Garraza
authors: Ariel
authors: A
authors: Szyszko
mesh_terms: D002598:Chagas Cardiomyopathy / Q000150:complications / Q000503:physiopathology*; D002908:Chronic Disease; D002940:Circadian Rhythm; D015331:Cohort Studies; D017147:Defibrillators, Implantable; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D017180:Tachycardia, Ventricular / Q000209:etiology / Q000503:physiopathology* / Q000628:therapy