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Coronary artery reoperation through the left thoracotomy with hypothermic circulatory arrest
1Department of Cardiovascular Surgery, Mitsui Memorial Hospital, Tokyo, Japan.
Insights
The left thoracotomy approach is a safe and effective method for coronary artery reoperation, ensuring graft patency and patient survival. This technique minimizes injury to existing grafts and the heart muscle.
Area of Science:
- Cardiovascular Surgery
- Cardiac Reoperation
Background:
- Coronary artery reoperation presents unique challenges, including avoiding injury to patent grafts and myocardium.
- Mid-sternal reentry can pose risks during repeat sternotomy.
Purpose of the Study:
- To evaluate the safety and efficacy of the left thoracotomy approach for coronary artery reoperation.
- To assess the utility of circulatory arrest for distal anastomoses in this context.
Main Methods:
- A left thoracotomy approach was utilized in 13 patients undergoing coronary artery reoperation.
- Distal anastomoses were performed using circulatory arrest with moderate hypothermia in 11 patients and on a beating heart in 2.
- No aortic cross-clamping was performed in any patient.
Main Results:
- All 13 patients survived the procedure and remained well at a mean follow-up of 16 months.
- Graft patency was confirmed in all patients, indicating successful revascularization.
- The left thoracotomy approach facilitated reoperation without compromising existing grafts or myocardium.
Conclusions:
- The left thoracotomy approach is a safe and effective strategy for reoperation targeting the left coronary artery system.
- Circulatory arrest provides a convenient and safe method for performing distal anastomoses during these procedures.
Background:
The left thoracotomy approach to avoid injury of the patent old graft and the myocardium with mid sternal reentry at coronary artery reoperation.
Methods:
The left thoracotomy approach was used in 13 patients. There were 11 men and 2 women with a mean age of 63 years, ranging from 39 to 75 years. Three patients were having their third coronary bypass operation. In 11 patients, distal anastomoses were performed under circulatory arrest with moderate hypothermia. In the other 2 patients, distal anastomoses were performed on a beating heart. No aortic cross-clamp was applied in all patients. The mean number of distal anastomoses was 1.8; the grafted vessels were 11 anterior descending, 3 diagonal, 8 circumflex, and 1 posterolateral coronary arteries. Used grafts were 17 saphenous veins, 4 left internal thoracic arteries, and 2 gastroepiploic arteries. Inflow sites of the free graft were descending aorta in 10 patients and left subclavian artery in 3 patients.
Results:
All patients were alive and well at the mean follow-up of 16 months, and all grafts were patent.
Conclusions:
The left thoracotomy approach is safe and effective for reoperation on the left coronary artery system, and circulatory arrest is convenient and safe for performing distal anastomosis.
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