Coronary stent implantation in patients older than 75 years of age:: Clinical profile and initial and long-term (3 years) outcome

Objective The objective of this study was to compare the initial and long-term outcome of elderly and younger patients after coronary stent implantation. Methods The evolutions of 76 patients aged > 75 years and of 860 patients aged : 75 years who underwent consecutive stenting (from June 1991 to June 1997) were compared in a cohort study. Results The elderly patients had lower left ventricular ejection fractions (0.58 +/- 0.14 vs 0.61 +/- 0.13; P = .03) and more frequently had unstable angina (78.9% vs 55.3%; P < .000 1), previous heart failure (10.5% vs 4.9%; P = .03), and multivessel disease (68.4% vs 58.3%; P = .08). After the procedure, the elderly patients showed a higher inhospital mortality rate (6.6% vs 2.4%; P = .03) and myocardial infarction rate (5,3% vs 1.7%; P = .04). The long-term follow-up period (mean, 3.2 +/- 1.4 years; median, 3.0 years) showed in the elderly a higher mortality rate (15.4% vs 5.8%; P = .006), a lower rate of repeat revascularization (9.2% vs 19.7%; P = .04), and a similar incidence rate of major adverse cardiac events (27.7% vs 28.2%; P = .93). Multivariate analysis of the elderly group identified female gender (hazard ratio, 2.19; 95% Cl, 1.18 to 4.06; P = .0 12) and presence of multivessel disease (hazard ratio, 2.35; 95% Cl, 1.05 to 5.26; P = .037) as independent predictors of further events. Conclusion Patients aged > 75 years have a less favorable baseline profile and higher inhospital and 3-year mortality rates, However, the incidence rate of major adverse cardiac events in the long term is acceptable and similar to that of younger patients.