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- R Malhotra and G Hughes.
- Department of Accident and Emergency, Bristol Royal Infirmary, United Kingdom.
- J Accid Emerg Med. 1996 Nov 1;13(6):427-30.
AbstractA case is reported of methaemoglobinaemia presenting with recurrent fits in the absence of cyanosis. A low oxygen saturation measured on pulse oximetry that fails to improve with oxygen treatment, the presence of "chocolate brown" blood that does not change on exposure to air, and a high PaO2 arterial blood gas with oxygen therapy should support such a diagnosis. A diagnostic blood methaemoglobin level should be obtained.
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