Kamel S. Kamel, MD; Martin Schreiber, MD, MMedEd; Ziv Harel, MD, MSc
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JAMA. 2022;327(8):774-775. doi:10.1001/jama.2022.1376
A 36-year-old man received a 0.9% saline infusion as postoperative treatment after a transsphenoidal resection of a pituitary macroadenoma. Within 30 minutes in the recovery room, he developed persistent, large-volume urine output. Blood testing performed 6 hours after the operation showed a sodium value of 148 mEq/L, increased from a baseline level of 138 mEq/L. What would you do next?