Why the study?
Does single-chamber pacing compared to dual-chamber pacing improve survival or reduce cardiovascular events in elderly patients with high-grade atrioventricular block?
Does single-chamber pacing compared to dual-chamber pacing improve survival or reduce cardiovascular events in elderly patients with high-grade atrioventricular block?
In elderly patients with high-grade atrioventricular block, the choice between single-chamber and dual-chamber pacing does not significantly impact 5-year mortality or 3-year cardiovascular event rates.
May not warrant dual-chamber preference in elderly high-grade AV block; leaves open randomized confirmation of equivalence.
In elderly patients with high-grade atrioventricular block, the pacing mode does not influence the rate of death from all causes during the first five years or the incidence of cardiovascular events during the first three years after implantation of a pacemaker.
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Toff et al. (2005) studied this question.
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