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Published on: February 26, 2013
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Innovative Surgical Left Atrial Appendage Closure Technique: Early Experience of Inverted Spiral Closure Technique
Eiki Nagaoka1, Hirokuni Arai1, Tomohiro Mizuno1
1Department of Cardiovascular Surgery, Tokyo Medical and Dental University, Japan.
Innovations (Philadelphia, Pa.)
|November 9, 2024
Summary
The novel inverted spiral closure technique (ISCT) effectively closes the left atrial appendage (LAA) during mitral valve surgery, preventing embolic events. This minimally invasive approach showed no strokes or deaths in a 1.1-year follow-up.
Area of Science:
- Cardiovascular Surgery
- Medical Devices
- Interventional Cardiology
Background:
- Left atrial appendage (LAA) closure is crucial for preventing cardiogenic embolic events in atrial fibrillation patients.
- Minimally invasive mitral valve surgery poses challenges for LAA access and traditional closure methods have failure rates.
Purpose of the Study:
- Introduce and evaluate the efficacy of the novel inverted spiral closure technique (ISCT) for surgical LAA exclusion.
- Assess the feasibility and early outcomes of ISCT during minimally invasive mitral valve surgery.
Main Methods:
- ISCT was performed on 26 patients undergoing concomitant mitral valve surgery between July 2020 and August 2021.
- Intraoperative and postoperative echocardiography (TEE) assessed LAA patency and residual flow.
- Follow-up included clinical evaluation for stroke or thromboembolic events.
Main Results:
- Successful ISCT in all patients with no significant residual LAA flow on intraoperative TEE.
- Median follow-up of 1.1 years showed no strokes, myocardial infarctions, or deaths.
- One case of LAA recanalization identified on CT scan months post-surgery.
Conclusions:
- ISCT is a reliable and effective technique for surgical LAA exclusion, feasible via the standard mitral valve surgery atriotomy.
- Further studies with larger patient cohorts and advanced imaging modalities are needed to fully validate long-term outcomes.
