Key result
Recording high voltage unipolar electrograms during bipolar demand ventricular pacing does not guarantee adequate QRS signal delivery to the pacemaker, which can lead to pacemaker failure.
Population
2 patients with bipolar demand ventricular pacing
Design
Case_report
Authors
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May warrant direct inter-electrode potential measurement in bipolar pacing; leaves open whether unipolar signals reliably predict delivery.
Case Report (n=2)
In bipolar pacing systems, adequate QRS signal delivery depends on the potential difference between the two intracardiac electrodes, which should be measured directly.
S. Serge Barold (1971) conducted a case report in Demand pacemaker failure (n=2). Bipolar demand ventricular pacing was evaluated on Demand pacemaker failure. Recording high voltage unipolar electrograms during bipolar demand ventricular pacing does not guarantee adequate QRS signal delivery to the pacemaker, which can lead to pacemaker failure.
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