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Dual chamber pacing with a single lead system: initial clinical results
J L Rey1, F el Ghelbazouri, C Tribouilloy
1Cardiology Department, University Hospital, Amiens, France.
Pacing and Clinical Electrophysiology : PACE
|November 1, 1996
Summary
This study shows that a new VDD pacing system using floating atrial ring electrodes is feasible for atrial pacing. Most patients achieved stable atrial capture without diaphragmatic stimulation, indicating a promising new pacing mode.
Area of Science:
- Cardiology
- Biomedical Engineering
- Medical Devices
Background:
- Permanent pacing systems are crucial for managing bradyarrhythmias.
- Single lead VDD pacing offers a less invasive approach compared to dual lead systems.
- Atrial pacing requires precise lead placement and stimulation threshold management.
Purpose of the Study:
- To evaluate the feasibility of atrial pacing using floating atrial ring electrodes in a single lead VDD permanent pacing system.
- To assess pacing thresholds and diaphragmatic stimulation in patients undergoing this new pacing mode.
Main Methods:
- A novel biphasic pacing mode was employed in 26 patients.
- Feasibility of atrial pacing was assessed via floating atrial ring electrodes.
- Atrial and diaphragmatic pacing thresholds were measured during implantation and at 3 months.
Main Results:
- Atrial pacing was feasible in 25 out of 26 patients at implantation.
- Mean atrial thresholds were low (1.70 V) with minimal diaphragmatic stimulation.
- Stable atrial capture without diaphragmatic stimulation was achieved in 76% of patients at 3 months.
Conclusions:
- The novel VDD pacing system with floating atrial ring electrodes demonstrates feasibility for atrial pacing.
- This approach offers a potential alternative for patients requiring permanent pacing.
- Further long-term studies are warranted to confirm efficacy and safety.