这个词是什么意思？
A drug used in the treatment of angina pectoris, heart failure, conduction defects, and myocardial infarction. It is a partial agonist at beta adrenergic receptors and acts as a coronary vasodilator and cardiotonic agent.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D010099 · MeSH 2026。
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