The treatment of arrhythmias should be based on the symptoms of the patient, the type of arrhythmia, and its impact on hemodynamics to determine if treatment is necessary. For instance, mild sinus bradycardia, irregular sinus rhythm, occasional atrial premature contractions, and first-degree atrioventricular block have minimal impact on hemodynamics. Therefore, if there are no obvious clinical symptoms and no cardiac structural disease, temporary drug treatment may not be required.

However, severe arrhythmias such as sick sinus syndrome, rapid atrial fibrillation, paroxysmal supraventricular tachycardia, and persistent ventricular tachycardia can cause palpitations, chest tightness, dizziness, low blood pressure, severe sweating, and in severe cases, syncope, Adams-Stokes syndrome, or even sudden death, which require immediate medical attention.