Measurement of Concentration of Exhaled Carbon Monoxide in Preoperative Smoking Patients under General Anesthesia

Abstract

【Back ground】There is no established means to identify pre-operative smoking patients and confirm smoking status.

【Materials and Methods】We investigated whether exhaled carbon monoxide（ExCO）can be measured from smoking intubated patients using a breath carbon monoxide（CO）concentration measuring device.

【Result】CO was detected in 85（88.5%）of 96 patients. Preoperative admission days were significantly correlated with ExCO value, but Brinkman Index and days from anesthetic consultation to surgery did not significantly correlate with ExCO values.

【Conclusion】Measurement of ExCO concentration could be useful for determining the smoking status of surgical patients.