American heart journal
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American heart journal · May 2001
Randomized Controlled Trial Comparative Study Clinical TrialLeft ventricular function and hemodynamic features of inappropriate left ventricular hypertrophy in patients with systemic hypertension: the LIFE study.
Predicted left ventricular (LV) mass for sex, height (2.7), and hemodynamic load can be used as an intrapatient reference for the observed LV mass. The ratio of observed/predicted LV mass may allow more physiologically correct comparisons of LV geometry, systolic and diastolic functions, and hemodynamics among hypertensive patients. ⋯ Among hypertensives with LV hypertrophy, iLVH identified cardiac phenotypes with a high prevalence of myocardial systolic dysfunction.
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American heart journal · May 2001
Comparative StudyExercise versus dobutamine-induced ST elevation in the infarct-related electrocardiographic leads: clinical significance and correlation with functional recovery.
The clinical significance of stress-induced ST elevation early after acute myocardial infarction and its relation to functional recovery remain controversial. The aims of this study were (1) to determine the incidence of ST elevation during dobutamine and exercise tests and (2) to assess the relative accuracy of exercise and dobutamine ST elevation for predicting functional recovery after acute myocardial infarction. ⋯ Stress-induced ST elevation is an ancillary sign of viable myocardium that can recover. The sum of ST elevation at peak dobutamine stress correlates with the extent of functional recovery.