title: Angiographic control and percutaneous treatment of myocardial ischemia immediately after CABG.
abstract: Perioperative myocardial ischemia is rare but serious complication of CABG. Graft dysfunction, coronary artery thrombosis and incomplete revascularization are main causes. Pharmacological treatment, intra aortic counter pulsation and immediate additional grafting have limited results. Treatment strategy based on coronary angiography findings could lessen the burden of high mortality rate in these patients. The purpose of this study was to analyze the causes of perioperative ischemia and angiography based treatment strategy including percutaneous intervention. We enrolled all 55 consecutive patients that went early coronary angiography for perioperative myocardial ischemia in a prospective longitudinal study. Incorrect graft anastomosis, graft spasm, displacement and dissection were found in 49%, 7%, 5% and 4% of patients, respectively. Acute coronary artery thrombotic occlusion was found in 5% of patients and ischemia due to incomplete revascularization in 6% of patients. In 22% of patients no cause of myocardial ischemia could be detected. There were no complications of coronary angiography. Based on coronary angiography findings percutaneous intervention was performed in 30 patients, additional grafting in 8 patients and no action was taken in 17 patients. Percutaneous intervention with stenting was performed on coronary arteries (78%) and graft anastomosis (22%) with primary success 97%. One anastomosis rupture with treatable tamponade and one lethal stent thrombosis were complications of percutaneous treatment. Overall in hospital mortality was 30%. We concluded that graft dysfunction is usual cause of myocardial ischemia due to incorrect anastomosis and that percutaneous intervention on bypass graft or coronary artery can lessen high mortality rate in these patients.
authors: "J. J. Strossmayer" University, "Magdalena" Clinic for Cardiovascular Diseases, Department of Cardiology, Krapinske Toplice, Croatia. janko.szavits-nossan@magdalena.hr
authors: Janko
authors: J
authors: Szavits-Nossan
authors: Hrvoje
authors: H
authors: Stipić
authors: Igor
authors: I
authors: Sesto
authors: Ksenija
authors: K
authors: Kapov-Svilicić
authors: Tomislav
authors: T
authors: Sipić
authors: Robert
authors: R
authors: Bernat
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects; D001026:Coronary Artery Bypass / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000453:epidemiology / Q000628:therapy*; D011183:Postoperative Complications / Q000453:epidemiology / Q000628:therapy*; D012307:Risk Factors; D016896:Treatment Outcome