Correlation among radiologic, echocardiographic indices and self paced-exercise capacity in heart failure.
We investigated the relationships between the cardiothoracic ratio, M-mode echocardiographic indices and symptom-limited, self-paced exercise tolerance in 8 Nigerian patients with chronic stable congestive heart failure. Left ventricular diastolic dimension was inversely related to exercise duration; thus: log exercise time (sec) = 6.142-0.057x (r2 = 0.83, P less than 0.05), but was directly correlated to an index of myocardial oxygen demand, the ratio of the pressure rate product (PRP) to the exercise time; thus: log PRP/exercise time = 0.073x-3.04 (r2 = 0.87, P less than 0.05). These preliminary findings need extensive confirmatory evidence.
Ajayi
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AA
Department of Medicine, Faculty of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria.
Balogun
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MO
Ajayi
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AT
D004452:Echocardiography; D005080:Exercise Test; D006333:Heart Failure / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D011859:Radiography