Key result
Intraventricular conduction defects can cause delayed ventricular depolarization reaching the sensing electrodes, leading to failure to sense that mimics pacemaker malfunction.
Population
30 patients with normally functioning noncompetitive R-inhibited or R-triggered pacemakers exhibiting…
Design
Case_series
Authors
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May explain apparent sensing failure in conduction delay; leaves open whether ECG review prevents unnecessary revisions.
Observational (n=30)
Intraventricular conduction delays can cause normally functioning pacemakers to fail to sense late-arriving depolarization fronts, mimicking pacemaker malfunction and potentially leading to unnecessary pulse generator replacement.
Vera et al. (1975) conducted an observational in Patients with noncompetitive pacemakers and intraventricular conduction defects (n=30). Intraventricular conduction defects was evaluated on Failure to sense by demand pacemakers. Intraventricular conduction defects can cause delayed ventricular depolarization reaching the sensing electrodes, leading to failure to sense that mimics pacemaker malfunction.
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