Browse Guides  internal medicine  toxicology

Prevalence Clinical features Investigations Therapy Prognosis

Investigations Arterial blood gas d   N.B. do not use pulse oximetry alone - it is deceptively wrong. Carboxyhaemoglobin (HbCO) level (arterial or venous sample acceptable) c   Abnormal if > 5% in non-smokers, > 10% in smokers c   ECG monitoring c   Chest X-ray c

Expiry date: January 2004
Levels of Evidence used in grading these guides