Why the study?
Does the Valsalva maneuver alter intracardiac signal amplitude and slew rate in patients with permanent ventricular pacemakers?
Population
7 patients with an adequate escape rhythm who had permanent ventricular pacemakers undergoing generator…
Comparison
Standardized Valsalva maneuver vs Baseline intracardiac signal
Design
Case_series
Authors
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Valsalva may risk undersensing via amplitude swings in low-baseline pacemakers; single case leaves open need for maneuver-specific testing.
Does the Valsalva maneuver alter intracardiac signal amplitude and slew rate in patients with permanent ventricular pacemakers?
The Valsalva maneuver causes significant fluctuations in intracardiac signal amplitude and slew rate, which may lead to pacemaker undersensing, particularly in patients with low baseline amplitudes.
Rosenqvist et al. (1985) studied this question.
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