PMID: 20640382Jul 20, 2010Paper

Late clinical and functional assessment of arrhythmias in children after repair of Tetralogy of Fallot

Arquivos brasileiros de cardiologia
Maria Eulália Thebit PfeifferGesmar Volga Haddad Herdy

Abstract

Cardiac arrhythmias are the major cause of late sudden death in patients undergoing repair of Tetralogy of Fallot (TF). To evaluate the occurrence of cardiac arrhythmias in children and adolescents undergoing repair of TF, and to associate them with clinical aspects and laboratory tests. Cross-sectional study of 37 patients undergoing repair of TF at Instituto Estadual de Cardiologia Aloysio de Castro (Rio de Janeiro). After review of the medical records and clinical assessment, the patients underwent electrocardiography (ECG), echocardiography (Echo), 24-h Holter monitoring and exercise test (ET), whose results were subjected to statistical analysis. A total of 37 patients of whom 54% were males with a mean age of 9.7 ± 3.5 years and mean follow-up period of 4.7 ± 1.9 years were studied. The abnormalities most frequently found were: on ECG: right bundle branch block (89%); Echo: severe pulmonary regurgitation (43%), mild pulmonary stenosis (73%), moderate right ventricular hypertrophy (RVH, 57%); on ET: low exercise capacity (90%), impaired chronotropic response (40%), arrhythmias (20%); on Holter monitoring: arrhythmias (59%, of which 44% were ventricular, 38% supraventricular, and 24% both ventricular and supraventricular, w...Continue Reading

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