Purpose: To assess effectiveness of a -blocker bisoprolol basing on a study of variability of cardiac rhythm and polymorphism of -1 adrenergic receptor gene (ADRB1).
Material And Methods: We examined 99 patients with coronary atherosclerosis either with stable angina without history of vascular events or more than 6 month after myocardial infarction and/or coronary intervention.
Results And Conclusion: Patients with coronary atherosclerosis including those after myocardial infarction had signs of autonomic dysfunction regardless of the presence of genetic polymorphism Gly389Arg ADRB1. Sympathetic influences at orthostatic test performed during taking bisoprolol were more pronounced in patients with Gly389Gly ADRB1 genotype than in patients with Gly389Arg ADRB1 genotype. Basing on this observation we conclude that the control by bisoprolol of heart rate regulation in patients with Gly389Gly ADRB1 genotype should be considered inadequate.
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