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  • Title: [Post-infarction recurrent myocardial ischemia. Characterization with Holter ECG and exercise test].
    Author: García Barreto D, Valdesuso Aguilar R, Rivas Estany E, Hernández Acosta K, González León P, Alvarez Ginzo A.
    Journal: Arch Inst Cardiol Mex; 1991; 61(3):211-6. PubMed ID: 1718232.
    Abstract:
    In order to characterize postinfarction ischemia, 68 patients were studied by 24 hours Holter-monitoring and exercise testing. Twenty-four (35%) patients in Holter-monitoring and 26 (38%) in exercise testing had transient ischemic episodes. A significant coefficient of agreement was found between both tests. Nineteen (79%) of the patients had only silent ischemic episodes in Holter monitoring, and 87% of all episodes were asymptomatic. Twenty-two (87%) of the patients during positive exercise testing had silent ischemia. Eleven (46%) patients had transient ischemia at low and also at high heart-rates. Ten (37%) patients had ischemic episodes at lower charges than 100 watts, and all of them had more than 60 min of total ischemic burden in Holter-monitoring. A significant correlation was found between total ischemic burden and maximum ST segment shifts. The number of ischemic episodes were significantly higher during morning hours. A significantly higher rate of ventricular extrasystoles was found in recurrent ischemic patients, however, no difference was found in complex arrhythmias. After 1 year follow-up, 3 residual ischemic patients have died. The morbidity-calculated relative-risk is 13.9 times higher in patients with recurrent ischemia.
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