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  • Title: Comparison of the safety and efficacy of bisoprolol versus atenolol in stable exercise-induced angina pectoris: a Multicenter International Randomized Study of Angina Pectoris (MIRSA).
    Author: de Muinck ED, Buchner-Moell D, van de Ven LL, Lie KI.
    Journal: J Cardiovasc Pharmacol; 1992 Jun; 19(6):870-5. PubMed ID: 1376806.
    Abstract:
    Bisoprolol 10 mg and atenolol 100 mg once daily were compared regarding efficacy and safety in stable effort angina in a 12-week, multicenter, double-blind, randomized, parallel-group study. Efficacy was evaluated with angina pectoris diaries and bicycle exercise tests. Spontaneously mentioned complaints and side effects were recorded at each visit. In 11 centers, 147 patients completed the study; 76 received bisoprolol 10 mg, and 71 received atenolol 100 mg. After 12 weeks, weekly anginal attack rate was reduced significantly (p less than 0.05) with bisoprolol (5 +/- 0.5 to 2 +/- 0.6) and with atenolol (4 +/- 0.4 to 1 +/- 0.2). Peak exercise capacity (in W x min) increased significantly (p less than 0.05) with bisoprolol (772 +/- 47 to 878 +/- 52) and with atenolol (891 +/- 46 to 986 +/- 53). Rate pressure product (RPP) at peak exercise (in beats/min x mm Hg) decreased significantly (p less than 0.05) with both bisoprolol (25,003 +/- 692 to 20,116 +/- 637) and atenolol (26,544 +/- 557 to 21,603 +/- 576) (all values are mean +/- SE). The differences between the groups were not statistically significant. There were no significant differences regarding nature and incidence of adverse events between the groups. Thus, bisoprolol 10 mg once daily and atenolol 100 mg once daily are equipotent in their effects on stable effort angina. Both regimens were comparable with respect to incidence and nature of side effects.
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