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
Article
em En
| LILACS
| ID: lil-301423
Biblioteca responsável:
BR1.1
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:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Bloqueio de Ramo
/
Baixo Débito Cardíaco
/
Estimulação Cardíaca Artificial
Tipo de estudo:
Clinical_trials
/
Observational_studies
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Prevalence_studies
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Risk_factors_studies
Limite:
Adult
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Female
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Humans
/
Male
Idioma:
En
Revista:
Arq. bras. cardiol
Assunto da revista:
CARDIOLOGIA
Ano de publicação:
2002
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Brasil