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  • Title: [8 years outcome of 243 trials of coronary angiography performed in the Montreal Institute of Cardiology].
    Author: Brunel P, Bourassa MG, Guiteras P, David PR.
    Journal: Arch Mal Coeur Vaiss; 1993 Jun; 86(6):867-72. PubMed ID: 8274058.
    Abstract:
    This study reports the long-term outcome of the first 243 patients who underwent coronary angioplasty at the Montreal Heart Institute between February 1980 and March 1983. The average age of the patients was 50 +/- 9 years; one quarter of cases were unstable angina; three quarters of the patients were men. Single vessel coronary disease was present in 83% of patients; the mean ejection fraction was 62%. One segment was dilated in 216 patients and 2 segments in 27 patients. The LAD was dilated in 179 patients, the right coronary in 63 and the left circumflex artery in 20 patients. The average severity of stenosis was 83 +/- 9.5%. Angioplasty was successful in 68.7% of patients. There were no fatalities: 25.5% of patients underwent coronary bypass surgery; 6.2% of patients suffered myocardial infarction. Restenosis was observed in 28% of patients. The average follow-up period was 99 +/- 10 months (average 8 years) and ranged from 7 to 10 years. The survival rate was 98.4% and 90.5% at 5 and 10 years respectively. Survival rates without infarction were 91.8% and 81.3% at 5 and 10 years, and survival without infarction or revascularisation was 73.2% and 60.3% at 5 and 10 years, respectively. During follow-up, 80% of patients were asymptomatic. Nearly a half of patients required antianginal therapy (monotherapy in 65.7% of them). Factors associated with absence of mortality infarction or revascularisation were: female sex, absence of restenosis and less severe stenosis before angioplasty. Using a multivariate analysis, only the degree of stenosis was correlated to the absence of these complications.(ABSTRACT TRUNCATED AT 250 WORDS)
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