Vs before and after surgery were77±42, 13ml and 61, 1 ±29, 47ml, LVMI before and after surgery were135, 5 ± 44, 61 grams and 117, 4 ± 30, 17grams, EF before and after surgery were 39, 22 ± 8, 4% and 45, 83 ± 13, 39% There was a statistically significant improvement in ultrasound parameters in the group with preoperative EF < 50%: EF increased significantly while cardiac chamber volume, chamber size and left ventricular muscle mass decreased.