Blood concentrations and symptoms of carbon monoxide poisoning

Illustration of clinical symptoms at different concentrations of carboxyhemoglobin in the blood

Adapted from Gilman AG (2002). Goodman and Gilman's The Pharmacological Basis of Therapeutics, 10th ed., p. 1881. New York: McGraw-Hill.

Numbers indicate the amount of hemoglobin that has bonded with carbon monoxide. This number is also called the carboxyhemoglobin level.

Last Updated: March 18, 2008

Medical Review: Caroline S. Rhoads, MD - Internal Medicine & R. Steven Tharratt, MD, MPVM, FACP, FCCP - Pulmonology, Critical Care, Medical Toxicology

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