Deterioration of Myocardial Function Following Aorto-Coronary Bypass Operation

摘要: Twenty-two patients underwent cardiac catheterization before and an average of five months after aorto-coronary bypass operation (ACBO). Two groups were examined: 10 with all grafts patent, 12 one or more occluded. All improved symptomatically, regardless graft patency. However, in the occluded group, left ventricular end-diastolic pressure (LVEDP) increased (4.4 ± 2.2 mm Hg, P < 0.05), stroke volume index fell (9.8 3.1 ml/m2, ejection fraction decreased (10 4%, work (12 3 g-m/m2, 0.01). Qualitative analysis segmental contractility was performed. Of 28 segments supplied by patent grafts, six nine deteriorated. 22 none eight Frequently no angiographically demonstrable basis for deterioration evident. We concluded that while ACBO may appreciably benefit severely symptomatic patients, our results do not substantiate claim should be recommended when primary surgical goal is preservation enhancement myocardial function.