Comparative analysis of myocardial revascularisation and combined surgery impact on left ventricular function in patients with ischemic cardiomyopathy

The aim of study was to evaluate the impact of isolated myocardial revascularisation (MR) and combined surgery (MR) with mitral valve (MV) repair) on early and late postoperative changes of left ventricular ( LV) function. The study group consisted of 133 CAD pts with low LV ejection fraction (28.6±4.1%) and = IIû MV incompetence, including 73 pts who underwent isolated MR (1 gr.) and 60 pts \u96 MR with MV repair (2 gr.). Echocardiographic investigations performed preoperatively, early (10\u9614 th day) and late (following 1 year) after surgery, included evaluation of 1) LV morphometry, 2) systolic function indices, 3) pulmonary artery pressure (PAP) and 4) severity of MV incompetence. Results. At late follow up severity of MV incompetence did not differ from the preoperative in 1 gr., but was significantly lower in 2 gr. (2.8±0.5 versus 1.6±0.7, p<0.05). Preferable LV function changes were noted in 1 gr. at early follow up, but at late follow up \u96 LV end diastolic diameter index increased and exceeded preoperative values (from 29.6±4.4 to 31.3±4.1 mm/mþ, p<0.05), as well as segmental contraction index and PAP (from 31.9±7.0 to 39.5±17.4 mmH, p