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To elucidate the clinical features of acute myocardial infarction (AMI) and post-MI silent myocardial ischemia (SMI) in the elderly, and efficacy of therapy in an era of coronary intervention, a total of 10,607 patients with AMI who were enrolled in a multicenter survey between 1982 and 1992 were examined. The elderly had a higher ratio of females, noncardiac illness, atypical symptoms at the onset of AMI, severe pump failure at admission, cardiac rupture and multivessel disease. Hospital mortality was markedly higher in patients &gt; or = 75 years, and it was 4-fold compared with patients &lt; 65 years. In the last 5 years, the rate of application of coronary angiography and primary PTCA significantly increased even in the very elderly. In contrast, use of thrombolysis highly diminished. Hospital mortality declined (14.6 vs 11.9%, p &lt; 0.001) in every age group compared with the first 5 years, although it was higher in the elderly even in the last 5 years. Investigation of 642 survivors after AMI admitted to one hospital showed that the elderly had a higher incidence of SMI and post-MI angina compared with the non-elderly. Clinical features of SMI were similar in both groups. However, medical treatment was more prevalent and recurrence of MI and cardiac death during follow-up (average 27 months) were more frequent in the elderly. In this retrospective study, characteristics of AMI and SMI, and effectiveness and limitation of therapy in the elderly were clearly demonstrated. It was evident that hospital mortality of the elderly had improved, although it was still higher than the non-elderly.

nippon ronen igakkai zasshi japanese journal of geriatrics

Heart Disease in the Elderly. Acute Myocardial Infarction and Silent Myocardial Ischemia in the Elderly. Clinical Features and Effectiveness of Therapy in an Era of Coronary Intervention.