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Complete revascularization of the left anterior descending coronary artery
1Department of Cardiovascular Surgery, Kumamoto Central Hospital, 96 Tainoshima, Tamukaemachi, Kumamoto 862-0965, Japan.
Insights
Complete revascularization of the left anterior descending (LAD) coronary artery using advanced bypass grafting techniques significantly improved left ventricular function and demonstrated excellent long-term survival rates with low complication risk.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
- Cardiac Surgery Outcomes
Background:
- Coronary artery disease often necessitates complex interventions for the left anterior descending (LAD) artery.
- Complete revascularization is crucial for improving cardiac function and patient prognosis.
Purpose of the Study:
- To evaluate the efficacy of complete revascularization of the LAD coronary artery.
- To assess the outcomes of complex bypass grafting techniques, including the onlay patch and double bypass procedures.
Main Methods:
- Retrospective analysis of 81 patients undergoing bypass grafting for LAD revascularization.
- Utilized complex techniques such as onlay patch and double bypasses.
- Monitored perioperative outcomes, graft patency, and long-term clinical events.
Main Results:
- High overall graft patency rate (99%) with all LAD bypasses patent.
- Significant improvement in left ventricular anterior wall motion postoperatively.
- Low rates of perioperative myocardial infarction (1.2%) and hospital mortality (2.5%).
- Excellent long-term survival (90% at 8 years) and cardiac event-free rates (63% at 8 years).
Conclusions:
- Complete LAD revascularization via advanced bypass techniques is safe and effective.
- These methods enhance left ventricular function and cardiac performance.
- The procedures yield favorable long-term survival and low event rates, indicating successful management of complex coronary artery disease.
Objective:
To assess the efficacy of complete revascularization of the left anterior descending coronary artery.
Methods:
To obtain such revascularization, 81 patients required the use of such complex techniques as the onlay patch technique or double bypasses during bypass grafting.
Results:
The onlay patch technique was used in 39 (48%) and double bypasses in 42 (52%). The wall motion in all anterior segments of the left ventricle showed an improving trend postoperatively. The patency rate was 99% overall, and the bypass grafts to the left anterior descending coronary artery were all patent with flow in all left anterior descending coronary artery areas. Perioperative myocardial infarction occurred in only 1 patient (1.2%), and hospital mortality was 2.5% (2/81). Long-term results of 79 hospital survivors were as follows: the mean follow-up time was 77 months (3 to 236); the actuarial survival rate including all deaths and estimated by cardiac death was 90% and 95% at the eighth postoperative year respectively; the cardiac event free rate at the fifth and eighth postoperative year was 90% and 63% respectively. A total of 8 cardiac events were observed. Excluding 3 cardiac deaths, no cardiac events were clearly attributable to the left anterior descending coronary artery.
Conclusions:
Complete revascularization of the left anterior descending coronary artery using these techniques improved the anterior wall motion in the left ventricle and cardiac performance at low risk, and provided excellent long-term results.