• Brian E Driver, Lauren R Klein, Chaitanya Chittineni, Ellen K Cales, and Nathaniel Scott.
• Department of Emergency Medicine, Hennepin County Medical Center, Minneapolis, Minnesota.
• J Emerg Med. 2018 Jul 1; 55 (1): 15-22.e3.

BackgroundEmergency department (ED) treatment of hyperkalemia often involves shifting potassium into the intracellular space. There is uncertainty whether transcellular shifting causes insufficient potassium removal during hemodialysis, resulting in a subsequent need for further medical therapy or multiple sessions of hemodialysis.ObjectiveWe sought to determine whether transcellular potassium shifting in ED patients with hyperkalemia who undergo hemodialysis is associated with recurrent hyperkalemia with or without repeat hemodialysis within 24 h.MethodsThis was a retrospective observational study of ED patients with a potassium value > 5.3 mmol/L and ≥1 hemodialysis run. Transcellular shifting medications were defined as albuterol, insulin, and sodium bicarbonate. Primary outcomes were recurrent hyperkalemia with and without repeat hemodialysis within 24 h of the initial dialysis run. Generalized estimating equation models were created for the outcomes using administration of a shifting medication as the primary predictor.ResultsFour hundred seventy-nine encounters were identified. In 238 (50%) encounters, a shifting medication was administered. There were 85 outcomes of recurrent hyperkalemia and 36 outcomes of recurrent hyperkalemia with repeat hemodialysis. After adjustment, administration of shifting medications was not associated with recurrent hyperkalemia (adjusted odds ratio 1.26, 95% confidence interval 0.71-2.23) or recurrent hyperkalemia with repeat dialysis (adjusted odds ratio 1.90, 95% confidence interval 0.80-4.48).ConclusionsAdministration of transcellular shifting medications for hyperkalemia in the ED was not associated with either recurrent hyperkalemia after hemodialysis or the need for a second dialysis session within 24 h. Our findings address the uncertainty regarding transcellular potassium shifting before emergent dialysis and support safe ED administration of medications that shift potassium to the intracellular space.Copyright © 2018 Elsevier Inc. All rights reserved.

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