Abstract:
Background: Coronary artery disease (CAD) was commonly associated with aortic syndrome patients. Routine coronary angiogram (CAG) was performed to evaluate coronary artery anatomy in patients prior to repair of aortic syndrome in King Chulalongkorn memorial hospital. This prevalence and predictors of significant coronary artery disease in this patients have never been reported in Thailand. Methods: Two hundred and eighty-nine patients whom undergoing aortic syndrome surgery were studied. 227 were retrospective study in 2002-2006 and 62 were prospective study in 2007. Only 126 patients whom were performed CAG were reviewed and collected data from OPD card, IPD data, hospital LAN data and telephone interview. Clinical atherosclerotic risk factors and types of aortic surgery were subjected to univariate and multivariate analysis to determine predictors for CAD. Results: Forty-seven of 126 (37%) had significant at least one major coronary artery stenosis, 18 patients (38%) received medication, 5 patients (11%) received percutaneous tranluminal coronary angiography and 24 patients (51%) underwent coronary artery bypass graft. Overall mortality of 126 patients undergoing aortic syndrome surgery was 15 (12%). 11 patients (9%) were non-significant CAD group, 4 patients (3%) were significant CAD group. No perioperative myocardial infarction were noted after aortic syndrome surgery. Multivariate analysis indicated only infrarenal type of abdominal aortic aneurysm (AAA) (OR = 4.14, 95% CI = 1.89-9.08) and NYHA functional class >= 2 (OR = 2.67, 95% CI = 1.2-5.9) as significant for significant CAD in patients undergoing aortic syndrome surgery. Conclusions: Prevalence of significant CAD in these groups were similar previous study. Infrarenal AAA and NYHA functional Class >= 2 were correlated with significant CAD. Thus, all patients have no intrarenal AAA and NYHA functional class I may not be necessary to perform CAG before surgical repair. Further large scale studies are required to assess risk in this patients to facilitate the development of appropriate practice.