Common Cardiac Arrhythmias to Know
âĪïļ Common Cardiac Arrhythmias to Know 1. Sinus Bradycardia HR: < 60 bpm Causes: Athleteâs heart, vagal stimulation, meds (beta-blockers, digoxin) Treatment: Only if symptomatic â atropine, pacemaker 2. Sinus Tachycardia HR: > 100 bpm Causes: Fever, pain, anxiety, hypovolemia, stimulant