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[Long-term evaluation of a new single lead VDD pacemaker]
Minerva Cardioangiologica
|October 1, 1991
Summary
This study evaluated VDD pacemakers in 36 patients with AV block, demonstrating high atrioventricular synchronization. The Phymos pacing system showed reliable performance in long-term follow-up.
Area of Science:
- Cardiology
- Biomedical Engineering
- Electrophysiology
Context:
- 36 patients with second and third-degree atrioventricular (AV) block and normal sinus node function received VDD pacemakers with single-lead floating differential sensing (Phymos) since June 1988.
- Assessment of pacing system reliability is crucial for managing bradyarrhythmias.
Purpose:
- To assess the acute and long-term reliability of the Phymos VDD pacing system in patients with AV block.
- To evaluate the degree of atrioventricular synchronization achieved with this pacing modality.
Summary:
- The Phymos VDD pacing system was implanted in 36 patients with AV block. Reliability was assessed using ECG, Holter monitoring, exercise stress tests, and nifedipine tests at various intervals.
- Two patients died during follow-up, and two experienced atrial fibrillation. However, the remaining patients demonstrated excellent atrioventricular synchronization, ranging from 95% to 100%.
Impact:
- The Phymos VDD pacing system demonstrates high reliability and effectiveness in maintaining atrioventricular synchronization in patients with AV block.
- This technology offers a viable solution for patients with specific conduction abnormalities, improving cardiac function and potentially patient outcomes.