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Updated: Aug 21, 2026

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
Published on: July 14, 2023
Prolonged postoperative disorientation after methylene blue infusion during parathyroidectomy
Kevin K Bach1, Fred W Lindsay, Lamont S Berg
1Department of *Otolaryngology and †Anesthesiology, Naval Medical Center San Diego, California.
Abstract:
Methylene blue 7.5 mg/kg is frequently given at our institution during parathyroidectomy. The dye preferentially stains the parathyroids so as to provide better surgical visualization. Other than causing a pseudocyanosis, the technique is generally considered to be rather innocuous. We report a case of a patient who, after this procedure, had a postoperative course that was unusual because of slowly resolving altered mental status.
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