Arrhythmias, Cardiac

**Definition:** Any disturbances of the normal rhythmic beating of the heart or MYOCARDIAL CONTRACTION. Cardiac arrhythmias can be classified by the abnormalities in HEART RATE, disorders of electrical impulse generation, or impulse conduction.

**Tree numbers:** - C14.280.067 - C23.550.073

**Synonyms:** - Arrhythmia - Arrythmia - Cardiac Arrhythmia - Cardiac Arrhythmias - Cardiac Dysrhythmia