metoprolol a competitve antagonist (inhibitor) is commonly prescribed medication resulting in a decrease in heart rate
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These chemicals are responsible for increasing heart rate and blood pressure. Show more…
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A 55-year-old man has had crushing substernal chest pain on exertion over the past 6 weeks. He had a myocardial infarction 2 months ago. He takes nitroglycerin as needed and one aspirin daily. Examination shows normal heart sounds and no carotid or femoral bruits. Treatment with a β-adrenergic blocking agent is most likely to improve his symptoms due to which of the following mechanisms?
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