Key result
VDD pacing and VVI pacing yielded similar overall survival in high degree AV block, but VVI pacing worsened 5-year survival in patients with congestive heart failure (47% vs 72%, P=0.008).
Why the study?
Does rate adaptive atrial synchronous (VDD) pacing improve survival compared to fixed rate ventricular inhibited (VVI) pacing in patients with high degree AV block?
Population
148 patients with high degree AV block
Comparison
Rate adaptive atrial synchronous (VDD) pacemakers vs Fixed rate ventricular inhibited (VVI) pacemakers
Design
Cohort
Follow-up
mean 5.4 years
Authors
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May favor VDD over VVI in heart failure with high-degree AV block; leaves open need for randomized confirmation.
Cohort (n=148)
Does rate adaptive atrial synchronous (VDD) pacing improve survival compared to fixed rate ventricular inhibited (VVI) pacing in patients with high degree AV block?
In patients with high degree AV block and concomitant congestive heart failure, VDD pacing is associated with significantly better survival than VVI pacing.
LINDE‐EDELSTAM et al. (1992) conducted a cohort in High degree atrioventricular block (n=148). Rate adaptive atrial synchronous (VDD) pacing vs. Fixed rate ventricular inhibited (VVI) pacing was evaluated on Total mortality and estimated survival. VDD pacing and VVI pacing yielded similar overall survival in high degree AV block, but VVI pacing worsened 5-year survival in patients with congestive heart failure (47% vs 72%, P=0.008).
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