Related Experiment Videos
An improved design of temporary myocardial electrode
The Journal of Thoracic and Cardiovascular Surgery
|March 1, 1978
Summary
A novel temporary myocardial electrode with an integrated needle tip reduces pacing threshold increases post-cardiac surgery. This easily fixable electrode offers improved performance compared to conventional designs.
Area of Science:
- Cardiovascular Medicine
- Biomedical Engineering
- Electrophysiology
Background:
- Conventional myocardial electrodes can lead to increased pacing thresholds after implantation.
- Securing electrodes to atrial and ventricular myocardium presents fixation challenges.
Purpose of the Study:
- To introduce and evaluate a new temporary myocardial electrode designed to minimize exposed areas and improve fixation.
- To assess the efficacy of the novel electrode in reducing myocardial pacing threshold increase in patients undergoing cardiac surgery.
Main Methods:
- A novel temporary myocardial electrode featuring a needle tip for secure myocardial fixation was developed.
- The electrode was implanted in 20 patients undergoing cardiac operations.
- Myocardial pacing thresholds were measured postoperatively using a Medtronic Model 5880 A pacemaker.
Main Results:
- The new electrode significantly reduced the increase in myocardial threshold to pacing compared to commonly used electrodes.
- The electrode demonstrated ease of fixation on both atrial and ventricular myocardium.
- On postoperative day 7, pacing thresholds were 1.6 mA (ventricle) and 1.3 mA (atrium), with similar thresholds for both chambers.
Conclusions:
- The novel temporary myocardial electrode offers a significant advantage by reducing pacing threshold elevation.
- Its design facilitates easier and more secure fixation, improving clinical applicability.
- The electrode shows promising results for temporary myocardial pacing applications.