Changing outcome of angioplasty in the elderly

Division of Cardiovascular Diseases, Mayo Clinic Jacksonville, Florida, USA.

OBJECTIVES. This study sought to determine whether in-hospital and intermediate-term posthospital outcomes have changed in elderly patients undergoing percutaneous transluminal coronary angioplasty from the period 1980 through 1989 to the period 1990 through 1992. BACKGROUND. Although elderly patients have a higher incidence of procedure-related deaths and late recurrence of angina after coronary angioplasty, recent complication rates for angioplasty seem to be lower. METHODS. From 1980 to 1989, 982 patients > or = 65 years old underwent nonemergent coronary angioplasty (group A). They were compared with 768 similar patients who had coronary angioplasty from 1990 to 1992 (group B). RESULTS. Patients in group B were older than those in group A and had a higher mean concomitant disease score, a higher proportion of men and a greater proportion of patients with a previous myocardial infarction and previous coronary artery bypass surgery. Despite the increased complexity of the group B cohort, procedural success rates were higher, and rates of important in-hospital complications were much lower than those in group A. For group A versus group B, respectively, the technical success rate was 88.1% versus 93.5% (p < 0.001), in-hospital death rate 3.3% versus 1.4% (p = 0.014), emergency bypass surgery rate 5.5% versus 0.65% (p < 0.001) and incidence of in-hospital death or myocardial infarction 6.3% versus 3.4% (p < 0.005). However, intermediate-term posthospital event-free rates in hospital survivors did not decrease. The rate of death or myocardial infarction at 6 months was 4.7% in group A versus 7.1% in group B (p < 0.05). Survival free of acute myocardial infarction, bypass surgery, repeat coronary angioplasty or severe angina at 1 year was 66.7% in group A versus 54.9% in group B (p < 0.001). The combined in-hospital death/myocardial infarction rate plus that for the first 6 months after hospital dismissal was essentially equivalent for the two groups (10.3% vs. 9.9%, p = NS). CONCLUSIONS. An increase in technical success rates and a reduction in short-term complication rates for coronary angioplasty in the elderly in recent years have not translated into an improved event-free survival rate, which continues to be influenced by important baseline characteristics of these high risk patients.

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