Introduction to Perioperative Arrhythmias While the incidence of perioperative arrhythmias is extremely high (the Multicenter Study of General Anesthesia reported a 70.2% incidence of tachycardia, bradycardia, or dysrhythmias in 17,201 patients having general anesthesia), only 1.6% of these will require clinically-significant management (antidysrhythmic drugs, electrical devices, or cardiopulmonary resuscitation) [Forrest J et al. Anesthesiology 72: […]