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A Rare Case of Hyperkalemia Following Magnesium Sulfate Therapy in a Pregnant Patient With Preeclampsia

Year: 2025

Type: article

Abstract: A 21-year-old woman at 36 weeks’ gestation presented with preeclampsia and received intravenous magnesium sulfate for seizure prevention. Her magnesium level peaked at 7.4 mg/dL on day 2. By day 4, her potassium level peaked at 6.3 mmol/L, with peaked T waves on electrocardiogram. She was treated with potassium-lowering therapy, and her kidney function remained normal, though aldosterone levels were slightly low. Given the rise in her potassium level following hypermagnesemia and its normalization after her magnesium level decreased, hyperkalemia was attributed to an elevated magnesium level. This is the fourth reported case of hyperkalemia following magnesium administration.

Source: Annals of Internal Medicine Clinical Cases

DOI: 10.7326/aimcc.2024.1013

Authors: Talal Alomar, Anas Kartoumah, Mahad Alam, Rayan Ahmed, Mohamad Horani

Institutions: Edward Via College of Osteopathic Medicine, Arizona State University

Language: English

Topic: Potassium and Related Disorders

Subfield: Pulmonary and Respiratory Medicine

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: diamond

OpenAlex ID: W4408134498

FWCI:

Cites: 13

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Related to: 10