Percutaneous coronary angioplasty in patients over 75 years old: immediate and mid-term results.

Ninety-five patients 75 years or older (range 75-90, mean 79) underwent PTCA from 1987 to 1991. Forty-two patients were 80 years or older. Forty-four had prior MI, 5% had prior coronary bypass surgery (CBS), 13% had a prior history of recent cardiac failure, and 81% (77/95) presented with unstable angina, refractory to intravenous treatment in 31 cases. The mean left ventricular ejection fraction was 62% (range 34%-80%). Thirty-nine percent had single vessel disease, 41% had two vessel disease, and 20% had three vessel disease. Coronary calcifications were present in 28%. A single vessel was dilated in 81 patients, two vessels in 14 patients; complete revascularization was achieved in 41%. The clinical angiographic primary success rate was 79% (75/95). There were five procedural deaths, five MI, five CBS and, ten hematomas. Follow-up data were obtained in 100% cases, with a mean follow-up duration of 12 months (ranging from 1-36). There were four deaths, one MI, and two CBS. Twenty percent (15/74) of patients had a second PTCA with a 73% success rate. Finally, 70% of the initial population was asymptomatic after first or second PTCA at mid-term follow-up. We conclude that PTCA is safe and effective in elderly patients, with 70% clinical success rate at mid-term follow-up in spite of frequent incomplete revascularization limited to the culprit lesion.