Intermittent left bundle branch block following induction of general anesthesia in a healthy patient: a case report

The occurrence of a new-onset left bundle branch block under anesthesia is a challenging event.Intermittent left bundle branch block is uncommonly encountered inside the operating room.However, proper recognition of the nature and pathogenesis of intermittent left bundle branch block can prevent undue cancellation of surgery without endangering patient safety.In this report, a 69-year-old previously healthy patient, scheduled for total knee replacement under general anesthesia, developed intermittent left bundle branch block shortly after induction of anesthesia.After a multidisciplinary assessment, the planned surgery was resumed and completed safely.The patient was successfully extubated and transferred to the recovery room.Our patient was strongly advised to proceed with a formal cardiac evaluation to exclude any cardiac pathology, especially coronary artery disease.In addition to this specific case, this report explores the clinical implications of intraoperative intermittent left bundle branch block and its perioperative management plans.