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Detection and characteristics of retrograde P waves
Pacing and Clinical Electrophysiology : PACE
|March 1, 1983
Summary
Programmable VDD pacemakers pose a high risk of pacemaker-mediated tachycardia due to various triggers. Automatic control is needed to prevent tachycardia without losing hemodynamic benefits.
Area of Science:
- Cardiology
- Biomedical Engineering
- Medical Devices
Background:
- Pacemaker-mediated tachycardia (PMT) is a known complication.
- VDD and DDD pacemakers offer hemodynamic benefits but may be susceptible to PMT.
Purpose of the Study:
- To evaluate the risk of PMT induction in an external prototype of a programmable VDD pacemaker.
- To identify triggers for PMT in VDD pacing.
Main Methods:
- Clinical evaluation of an external VDD pacemaker prototype.
- Testing under various conditions including magnet removal, arrhythmias, and electrical interference.
Main Results:
- High incidence of PMT induction observed.
- PMT was triggered by magnet removal, premature beats, myopotential oversensing, and electrical interference.
Conclusions:
- Programmable VDD pacemakers carry a significant risk of PMT.
- Future VDD/DDD pacemakers require automatic PMT control mechanisms to maintain safety and efficacy.