Abstract
Objectives This study aimed to identify risk factors in patients diagnosed with angiographically significant coronary artery disease (CAD) after 65 years of age (elderly) with a subset analysis of more than 75 years, analyze their clinical, angiographic profile and assess their major acute cardiovascular and cerebrovascular events (MACCE). Methods This was an observational retrospective and prospective study conducted from January 2022 to June 2023 among consecutive elderly who underwent CAG for suspected or diagnosed CAD between 2010 and 2018 at a tertiary center in South India. Results A total of 1,511 patients satisfied eligibility criteria with mean age of 69.38 years and male preponderance (69%). Male gender, dyslipidemia and current tobacco use contributed to angiographically significant CAD by multiple logistic regression analysis but none of the risk factors contributed in the more than 75-year age group. Female patients had higher incidence of atypical presentation, less revascularizations and higher MACCE. Fourteen percent of patients with significant CAD developed MACCE over a median 3.5-year hospital follow-up. Survival analysis of 1,027 patients with significant CAD showed one, three, 5-year mortality rate of 4.3%, 6.9% and 10.8%, respectively, with left ventricular dysfunction and triple vessel disease being associated with worse survival. MACCE and 5-year survival was significantly better among those who underwent revascularization including those with significant left main or triple vessel disease. Conclusion This study showed a high prevalence of traditional risk factors in elderly patients among which male gender, dyslipidemia, current tobacco use were found to predict angiographically significant CAD. Triple vessel disease and left ventricular dysfunction were associated with worse survival. Mortality was significantly lower among elderly who underwent revascularization compared to medical management.
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