Emergency Medical Minute

Contributor: Aaron Lessen, MD Educational Pearls BRASH Syndrome: Bradycardia Renal Failure AV Nodal Blockade Shock Hyperkalemia  Clinical Features: Profound bradycardia and shock in patients on AV nodal blockers: Commonly, Beta Blockers or Calcium Channel Blockers Etiology:  Caused by an inciting kidney injury: Common triggers include precipitating illness, dehydration, or medications  Results in hyperkalemia The enhanced effect of the combination of AV nodal blockade and hyperkalemia leads to a more profound presentation of shock. Treatment:  IV Fluids, unless volume overloaded Epinephrine for bradycardia Lasix for volume overload, only if the patient is still making urine Low threshold to dialyze for hyperkalemia Focus on treating early and more aggressively.  References: Farkas JD, Long B, Koyfman A, Menson K. BRASH Syndrome: Bradycardia, Renal Failure, AV Blockade, Shock, and Hyperkalemia. J Emerg Med. 2020 Aug;59(2):216-223. doi: 10.1016/j.jemermed.2020.05.001.