这个词是什么意思？
A class of drugs that act by inhibition of potassium efflux through cell membranes. Blockade of potassium channels prolongs the duration of ACTION POTENTIALS. They are used as ANTI-ARRHYTHMIA AGENTS and VASODILATOR AGENTS.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D026902 · MeSH 2026。
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