Biventricular pacing improves clinical behavior and reduces prevalence of ventricular arrhythmia in patients with heart failure
Arq. bras. cardiol
;
78(1): 110-113, Jan. 2002. tab
Artículo
en Inglés
| LILACS
| ID: lil-301423
ABSTRACT
PURPOSE:
To analyze the influence of biventricular pacing (BP) on clinical behavior, ventricular arrhythmia (VA) prevalence, and left ventricular ejection fraction (LV EF) by gated ventriculography.METHODS:
Twenty-four patients with left bundle branch block (LBBB) and NYHA class III and IV underwent pacemaker implantation and were randomized either to the conventional or BP group, all receiving BP after 6 months.RESULTS:
Sixteen patients were in NYHA class IV (66.6 per cent) and 8 were in class III (33.4 per cent). After 1-year follow-up, 14 patients were in class II (70 per cent) and 5 were in class III (25 per cent). Two sudden cardiac deaths occurred. A significant reduction in QRS length was found with BP (p=0.006). A significant statistical increase, from a mean of 19.13 ñ 5.19 per cent (at baseline) to 25.33 ñ 5.90 per cent (with BP) was observed in LVEF Premature ventricular contraction prevalence decreased from a mean of 10,670.00 ñ 12,595.39 SD or to a mean of 3,007.00 ñ 3,216.63 SD PVC/24 h with BP (p<0.05). Regarding the hospital admission rate over 1 year, we observed a significant reduction from 60. To 16 admissions with BP (p<0.05).CONCLUSION:
Patients with LBBB and severe heart failure experienced, with BP, a significant NYHA class and LVEF improvement. A reduction in the hospital admission rate and VA prevalence also occurred.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Bloqueo de Rama
/
Gasto Cardíaco Bajo
/
Estimulación Cardíaca Artificial
Tipo de estudio:
Ensayo Clínico Controlado
/
Estudio observacional
/
Estudio de prevalencia
/
Factores de riesgo
Límite:
Adulto
/
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Arq. bras. cardiol
Asunto de la revista:
Cardiología
Año:
2002
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
University of Säo Paulo/BR
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