Angiographic and electrophysiologic substrates of ventricular tachycardia in chronic Chagasic myocarditis.
Am J Cardiol
; 65(5): 360-3, 1990 Feb 01.
Article
en En
| MEDLINE
| ID: mdl-2301265
Forty-three consecutive symptomatic patients with chronic Chagasic myocarditis and ventricular tachycardia (VT) underwent clinical evaluation, 24-hour Holter monitoring, left ventricular angiography and electrophysiologic testing including programmed ventricular stimulation at 3 drive cycle lengths at 2 sites in the right ventricle. The mean ejection fraction was 42 +/- 10%. Sixteen patients had clinical sustained VT and 27 nonsustained VT. VT was reproducibly initiated in 13 of 16 (81%) patients with sustained VT and in 14 of 27 (52%) patients with nonsustained VT. Electrocardiographic conduction disturbances were seen in 15 of 16 (94%) patients with sustained VT and in 17 of 27 (63%) patients with nonsustained VT (p less than 0.05). Five of 16 (31%) sustained VT and none of nonsustained VT patients had left ventricular aneurysms (p less than 0.05). These data indicate that VT is frequently inducible in patients with sustained VT and nonsustained VT and chronic Chagasic myocarditis. An association appears to be present between conduction disturbances on the electrocardiogram, left ventricular aneurysms and development of sustained ventricular arrhythmias.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Taquicardia
/
Cardiomiopatía Chagásica
/
Sistema de Conducción Cardíaco
Tipo de estudio:
Etiology_studies
Límite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Am J Cardiol
Año:
1990
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Estados Unidos