About The Study: For atrial fibrillation after cardiac surgery prophylaxis, supplementation only when serum potassium concentration fell below 3.6 mEq/L was noninferior to the current widespread practice of supplementing potassium to maintain a serum potassium concentration greater than or equal to 4.5 mEq/L. The lower threshold of supplementation was not associated with any increase in dysrhythmias or adverse clinical outcomes.
Corresponding Author: To contact the corresponding author, Benjamin O’Brien, MD, PhD, email Ben.OBrien@dhzc-charite.de.
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(doi:10.1001/jama.2024.17888)
Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.
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Media advisory: This study is being presented at the European Society of Cardiology Congress 2024.
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Journal
JAMA