BRASH (Bradycardia, Renal Failure, Atrioventricular Nodal Blockade, Shock, and Hyperkalemia) Syndrome: A Frequently Underrecognized Condition Often Confused With Simple Hyperkalemia.

BRASH syndrome, defined by bradycardia, renal failure, atrioventricular nodal blockade, shock, and hyperkalemia, is a relatively new and often underrecognized condition. In this article, we present a case of an elderly female who developed an episode of syncope. She was found to have refractory shock and bradycardia in the emergency department. Laboratory results and other findings led to the diagnosis of a BRASH syndrome, which was refractory to medical therapy alone, requiring transvenous pacing, hemodialysis, and vasopressor support.