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著者: M Touger, E J Gallagher, J Tyrell
雑誌名: Ann Emerg Med. 1995 Apr;25(4):481-3.
Abstract/Text
STUDY OBJECTIVE: To test the hypothesis that venous carboxyhemoglobin (V-COHb) levels accurately predict arterial (A-COHb) levels. DESIGN: Prospective comparison of A-COHb and V-COHb levels in patients with suspected carbon monoxide (CO) poisoning. SETTING: Municipal hospital emergency department with contiguous multiplace hyperbaric chamber staffed 24 hours a day. PARTICIPANTS: Unselected convenience sample of 61 adults with suspected CO toxicity. INTERVENTION: Simultaneous sampling of arterial and venous blood. RESULTS: Correlation between V-COHb and A-COHb showed an r value of .99 (95%CI, .99 to .99), and an r2 value of .98. Agreement between V-COHb and A-COHb levels was examined by use of a plot of arteriovenous differences against the mean of the two measurements. The mean arteriovenous difference was .15% COHb (95%CI, .13% to .45%), with 95% of the differences ranging from 2.4% COHb to -2.1% COHb. CONCLUSION: Venous COHb levels predict arterial levels with a high degree of accuracy. Patients with suspected CO poisoning can be screened with the use of venous blood, without the need for arterial puncture.
PMID 7710152 Ann Emerg Med. 1995 Apr;25(4):481-3.
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