Enalapril in African patients with congestive cardiac failure.

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Abstract
In a preliminary double‐blind study in African patients with heart failure, enalapril tended to increase treadmill exercise duration relative to placebo (95% confidence interval‐11.5 to 144.3 s). This was associated with a significant improvement in NYHA functional class and subjective well being (P less than 0.05 ANOVA) with a concomitant reduction in body weight (P less than 0.05 ANOVA). It significantly increased pulse pressure during forearm isometric exercise (P less than 0.05 ANOVA), but the Valsalva's manoeuvre and the orthostatic response were unchanged.