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Current Respiratory Medicine Reviews

Editor-in-Chief

ISSN (Print): 1573-398X
ISSN (Online): 1875-6387

An Unusual Cause of Low Oxygen Saturation in the Operating Room

Author(s): Joseph Varon, Pilar Acosta and Ross Reul

Volume 2 , Issue 3 , 2006

Page: [321 - 323] Pages: 3

DOI: 10.2174/157339806778018917

Price: $65

Abstract

Pulse oximetry is commonly used in clinical practice as an indirect monitor of blood oxygen saturation. There are many factors, however, that can interfere with accurate readings. We present a case of a woman with metastatic thyroid cancer that had a sudden drop in her pulse oximetry during bronchoscopy and that eventually was found to have an uncommon cause for a misleading persistently low oxygen saturation.

Keywords: Hypoxemia, methemoglobin, acidosis, methylene blue, methemoglobinemia


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