Implication of AV node blockers in patients with end-stage renal disease undergoing head and neck surgery; BRASH syndrome: a case report.

BRASH (Bradycardia, Renal failure, Atrioventricular [AV]-node blocker medications, Shock, and Hyperkalemia), a novel syndrome, is a synergistic interaction between AV node blockers and hyperkalemia, resulting in bradycardia. We report a case of BRASH syndrome with marked bradycardia in a patient with End-Stage Renal Disease (ESRD) associated with synergistic interaction between mild hyperkalemia and AV node blockers. Anesthesiologists should be aware of these clinical features, in which ESRD patients with baseline mild hyperkalemia are particularly susceptible to bradycardia. This report will help in its early recognition as well as enable comprehensive and appropriate treatment strategies without further invasive therapy.