Results of Myocardial Revascularization Surgery with Arterial Conduits (Cooperative Study In-AR 1)

pp 535-541

Abstract

Background

To report the experience of the centers composed the cooperative study IN-AR 1 on multiple myocardial revascularization with arterial conduits.

Material and method

From November 1996 to May 1997,140 multiple revascularization with arterial conduits were performed in these centers. All of them,122 (87.14%) were men, with a mean age of 58.12 years old (±8.99). Unstable angina in all its classification was present in112patients(80%), 52 patients (37.14%) had previous infarction. The coronary lesions were of 3 vessels or more in 103 cases (73.57%) and the left main coronary disease was present in 31 cases (22.14%). The ventriculograms with less than 45% of ejection fraction (moderate and severe) represented 90 cases (64.28%); 3.05 (± 0.70) bypass were performed by patient. The left mammary artery in 134cases (95.71%), the left radial artery in 132 (94.28%) and the right mammary artery in 33 (23.57%) were the most arterial graft used. The mean aortic cross clamping time was 68.41 minutes (± 19.49) and the mean of extracorporeal circulation time was 100.74 minutes (± 25.70). The cold blood cardioplegia by Buckberg method was used in 95 cases (7.85%).

Results

The surgical mortality was 5 cases (3.57%), 2 cases by perioperative myocardial infarction (1.42%),1 by stroke(0.71%), 1 case by mediastinitis and sepsis (0.71%) and 1 case by pulmonary embolism (0.71%). The mean of hospital stay was 6.97 days/patient (± 4.33).

Conclusions

The results obtained in this cooperative study, we conclude that multiple myocardial revascularization with arterial conduits can be performed with low hospital mortality rate and with better expectations on the longevity of the grafts.