FACTORS DETERMINING RISK OF CORONARY-BYPA SS SURGERY IN UNSTABLE ANGINA

Coronary bypass surgery was performed in 118 patients with unstable an gina 86% of whom had three and 14% - double-vessel coronary artery dis ease. Twenty seven patients had early postinfarction angina. There was no significant difference in results of coronary revascularization be tween patients with early postinfarction angina and other patients wit h unstable angina. Perioperative mortality was significantly higher an d heart failure development more often in patients who had not been st abilised medically by the time of coronary bypass grafting and in pati ents with symptoms of heart failure before operation. In 3 months afte r surgery 6,6% and in 12 months -15,9% of patients had class III - IV angina. Persistence of class III - IV angina was significantly more of ten in those patients who had angina refractory to medical treatment b efore operation. Multifactorial analysis confirmed that inability to s tabilise patients's condition medically prior to surgery was a marker of worsened prognosis, Postoperative prognosis improved when stabilisa tion was achieved in 3 or more days before operation.