Definition: The word "antiarrhythmics" refers to medications that reduce or eliminate irregular heartbeats, often used in certain conditions, like arrhythmias or severe heart failure. They typically work by increasing the strength or rate of a specific chemical called an "atrial fibrillation," which occurs when the heartbeat is not beating as expected. Antiarrhythmic drugs can include beta-blockers and cardioversion devices, among others.
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