Pacemaker implantation had little discernible effect on mortality in a 10-year prospective survey of 381 patients with sinoatrial dysfunction, though it reduced incapacitating symptoms.
Cohort (n=381)
Does pacemaker implantation improve survival in patients with sinoatrial dysfunction?
Sinoatrial dysfunction is a relatively benign condition where pacemaker implantation does not significantly improve survival but can reduce incapacitating symptoms.
A total of 381 patients with established (156) or potential (225) sinoatrial dysfunction were included in a 10-year prospective survey to determine the course of the disease and the benefits of pacing. With the exclusion of nine patients who were lost to follow-up, 61 were fitted with pacemakers. The overall survival of patients with established and potential dysfunction was similar and apparently indistinguishable from that of the normal population. Pacemaker implantation had little discernible effect on mortality though it reduced some incapacitating symptoms. These findings suggest that sinoatrial dysfunction is a relatively benign condition. Hence pacing should probably not be adopted as a routing measure but be reserved for patients with troublesome symptoms.
Shaw et al. (Sat,) conduziram uma coorte em distúrbio sinoatrial (síndrome do nódulo doente) (n=381). A implantação de marcapasso vs. Sem marcapasso foi avaliada em sobrevida global. A implantação de marcapasso teve pouco efeito discernível na mortalidade em um estudo prospectivo de 10 anos com 381 pacientes com disfunção sinoatrial, embora tenha reduzido sintomas incapacitantes.