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      Incidence and Prognostic Significance of Symptomatic and Asymptomatic Exercise-Induced Ischemia in Patients with Recent Myocardial Infarction

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          To determine the incidence and the significance of anginal chest pain during abnormal exercise testing (⇓S-T ≧ 0.1 mV) in patients with recent myocardial infarction we reviewed a series of 353 patients who underwent maximal bicycle exercise stress 4–8 weeks following acute myocardial infarction. Of the 353 patients, 26 had ischemic ECG changes and chest pain (group A); 85 patients had ischemic ECG changes but no chest pain (group B). The two groups differ significantly only in the frequency of a history of typical angina pectoris more than 6 months prior to acute myocardial infarction (group A 42.3% vs. group B 15.2%, p < 0.01). Typical chest pain is more frequent in anterior versus inferior myocardial infarction (50 vs. 14.4%, p < 0.001). The patients were followed up for 28.8 ± 8.7 months with clinical and exercise testing controls. The incidence of exertional angina during the follow-up was significantly more frequent in group A patients than in group B patients (80.7 vs. 24.7%, p < 0.001). Unstable angina pectoris was more frequent in group A (34.6 vs. 11.8%, p < 0.01). There was no statistically significant difference in mortality (group A 3.8% vs. group B 5.9%) and cardiac events (group A 3.8% vs. group B 5.9%) between the two groups. Thus, we concluded that the occurrence of anginal pain associated with S-T segment depression during exercise testing does not increase the prognostic risk.

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          Author and article information

          S. Karger AG
          11 November 2008
          : 71
          : 5
          : 284-291
          aFondazione Clinica del Lavoro, Istituto di Ricovero e Cura a Carattere Scientifico, Centro Medico di Montescano, Pa via; bCattedra di Semeiotica Cardiovascolare, Università degli Studi, Pavia, Italia
          173677 Cardiology 1984;71:284–291
          © 1984 S. Karger AG, Basel

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          Page count
          Pages: 8
          Exercise Testing and Rehabilitation


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