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  • Title: Is angiotensin-converting enzyme inhibitor useful in a Japanese population for secondary prevention after acute myocardial infarction? A final report of the Japanese Acute Myocardial Infarction Prospective (JAMP) study.
    Author: Ueshima K, Fukami K, Hiramori K, Hosoda S, Kishida H, Kato K, Fujita T, Tsutani K, Sakuma A, Japanese Acute Myocardial Infarction Prospective study group.
    Journal: Am Heart J; 2004 Aug; 148(2):e8. PubMed ID: 15309011.
    Abstract:
    BACKGROUND: Although angiotensin-converting enzyme (ACE) inhibitors have appeared to be useful for secondary prevention after acute myocardial infarction (AMI) in Western countries, that has not been confirmed in non-western countries. We investigated whether ACE inhibitors improve survival rates in patients who have survived an AMI in Japan. METHODS: A randomized controlled trial, the first non-pharmaceutical company-supported multicenter trial of a medication in Japan, was carried out in 48 institutions from 1993 to 2000. A total of 888 of 1163 patients with AMI were eligible for the full analysis set (FAS). The mean patient age was 62 years, and 78% of patients were men. Subjects were randomized to 2 groups; 422 received ACE inhibitors and 466 did not receive ACE inhibitors. The primary end point was combined cardiac events, which was defined as cardiac or non-cardiac death, recurrent non-fatal myocardial infarction, coronary revascularization, and hospitalization because of worsening angina or congestive heart failure. The mean follow-up period was 5.8 years. RESULTS: There were no significant differences in the 2 groups in baseline data. During the follow-up period, 3 patients were lost to follow-up. With Kaplan-Meier analysis, the annual rate of total cardiac events was 32% in both groups. After adjustment for clinical baseline data, ACE inhibitor administration was not revealed with Cox regression analysis to have a significant prognostic effect in our study. CONCLUSION: We did not show a significant improvement in outcome with ACE inhibitor administration in subjects who survived after AMI in a Japanese study population. Further evaluations with a larger population or in subjects who are at a higher risk for AMI are necessary to confirm our findings.
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