CARBOXYHAEMOGLOBINAEMIA AND PULSE OXIMETRY
Open Access
- 1 May 1991
- journal article
- case report
- Published by Elsevier in British Journal of Anaesthesia
- Vol. 66 (5) , 625-626
- https://doi.org/10.1093/bja/66.5.625
Abstract
We compared measurements obtained with a pulse oximeter (SpO2) against values obtained from a CO-oximeter in a patient with carbon monoxide poisoning. SpO2was equal to the sum of the oxyhaemoglobin (HbO) and carboxy haemoglobin (HbCO) values over the range of HbCO from 30 to 1%. This confirms the experimental findings that pulse oximeters measure HbCO as HbO. The patient was treated with oxygen (FlO2 = 50%) and recovered without any sequelae. Under these circumstances, the half-life of HbCO was approximately 2 h.Keywords
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