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Evaluation of temporary atrial pacing leads
W A Scott1, M Lemler, L Farley
1Dept. of Pediatrics, University of Texas, Southwestern Medical Center, Dallas 75235-9063.
Pacing and Clinical Electrophysiology : PACE
|September 1, 1993
Summary
The Medtronic 6500 temporary pacing lead showed better sensing and used less energy than multifilament leads in heart surgery patients. This suggests it may improve atrial synchronous temporary pacing systems.
Area of Science:
- Cardiovascular Surgery
- Biomedical Engineering
- Electrophysiology
Background:
- Temporary pacing leads are crucial for atrial support post-open heart surgery.
- Assessing lead performance is vital for patient outcomes and system efficiency.
Purpose of the Study:
- To compare the sensing and pacing performance of the Medtronic 6500 lead against braided multifilament temporary pacing leads.
- To evaluate energy consumption and identify potential advantages for specific pacing systems.
Main Methods:
- Thirty-five patients undergoing open heart surgery were randomized to receive either the Medtronic 6500 or a braided multifilament temporary pacing lead in the atrium.
- Sensing performance was evaluated using amplitude, slew rate, and adequate sensing thresholds.
- Pacing performance was assessed via impedance, threshold voltage, current, and energy measurements.
Main Results:
- The Medtronic 6500 lead exhibited superior sensing capabilities compared to braided multifilament leads.
- Lower energy consumption was observed with the Medtronic 6500 lead.
- A higher proportion of patients achieved adequate sensing thresholds with the Medtronic 6500.
Conclusions:
- The Medtronic 6500 temporary pacing lead offers significant advantages in sensing performance and energy efficiency.
- This lead may provide enhanced benefits for atrial synchronous temporary pacing applications.
- Clinical evaluation supports the Medtronic 6500 as a potentially superior option for temporary atrial pacing.