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Rapid estimation of carboxyhemoglobin by breath sampling in an emergency setting.

Breath measurement of carbon monoxide (CO) can be rapidly performed in the emergency department setting by a reliable method that closely approximates carboxyhemoglobin. This method is helpful in the immediate determination of CO exposure for individual patients, but could serve as a valuable triage aid when large groups of patients are suspected of CO exposure. Serial CO determinations can be obtained during oxygen treatment to monitor for improvements without painful needle punctures and needless consumption of professional time and expense.