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  • Title: Clinical and hemodynamic effects of combined propranolol and nifedipine therapy versus propranolol alone in patients with angina pectoris.
    Author: Braun S, Terdiman R, Berenfeld D, Laniado S.
    Journal: Am Heart J; 1985 Mar; 109(3 Pt 1):478-85. PubMed ID: 3976473.
    Abstract:
    To determine the comparative effectiveness and hemodynamic effects of long-term oral treatment with propranolol alone and combined with nifedipine in patients with stable angina pectoris, 20 patients with coronary disease were studied by equilibrium radionuclide ventriculography. Measurements were performed at rest and during supine bicycle exercise before treatment, after 4 weeks on propranolol, 1 hour after institution of combined propranolol and nifedipine treatment, and after 4 weeks on the combined treatment. The reduction in exercise rate-pressure product induced by the combination (17.2 +/- 2.6 X 10(3)) was significantly greater (p less than 0.001) than that attained by propranolol alone (19.3 +/- 2.8 X 10(3)). In patients at rest, neither propranolol nor the combined therapy altered global left ventricular (LV) ejection fraction (EF). Without drugs and on propranolol, exercise EF decreased significantly. On the combined therapy there was a significant improvement in exercise EF compared both with rest values (p less than 0.01) and with exercise EF on propranolol (p less than 0.001). Exercise tolerance, expressed as total work load, significantly increased on propranolol and further increased on combined therapy. Thus the combined propranolol/nifedipine therapy in patients with stable angina proved to be hemodynamically superior to therapy with propranolol alone and safe even in patients with moderately depressed LV function.
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