Nitrite-induced methaemoglobinaemia - aetiology, diagnosis and treatment.

Chui, J S W; Poon, W T; Chan, K C; Chan, A Y W; Buckley, T A · Anaesthesia · 2005

case_report · Level V

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Abstract

A 41-year-old woman presented with the clinical features of methaemoglobinaemia after drinking Chinese herbal medicine. A life threatening methaemoglobin level of 68% was measured. Both clinical and laboratory diagnostic difficulties were encountered. The pitfalls of pulse oximeter, blood gas analysis and co-oximeter interpretation during diagnosis and after methylene blue administration are discussed.

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