+Arrhythmia is an abnormal [Heart](/wiki/heart) rhythm, a subtle discord in the body's natural beat. It can manifest as a [Pulse](/wiki/pulse) that is too fast, too slow, or simply irregular, altering the heart's vital rhythm.
+## See also
+- [Bradycardia](/wiki/bradycardia)
+- [Tachycardia](/wiki/tachycardia)
+- [Fibrillation](/wiki/fibrillation)
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