• Bonny J Baron, Richard Sinert, Shahriar Zehtabchi, Karen L Stavile, and Thomas M Scalea.
• Department of Emergency Medicine, State University of New York Downstate Medical Center and Kings County Hospital Center, Brooklyn, New York 11203, USA. bonny.baron@verizon.net
• J Trauma. 2004 Jul 1;57(1):69-74.

BackgroundHemorrhage results in early compromise of splanchnic circulation. Studies have shown that sublingual Pco2 (SLCO2) correlates with gut perfusion. We tested SLCO2's ability to detect hemorrhage. We compared SLCO2 with arterial base deficit (BD) and lactate (LAC).MethodsThis was a prospective study of patients with penetrating torso trauma. SLCO2 was measured at triage. Blood loss was defined as none (group 1), minimal to moderate (<1,500 mL) (group 2), or severe (>/=1,500 mL) (group 3). Data were reported as mean (95% confidence interval) and compared by analysis of variance. Receiver operating characteristic curves compared diagnostic performance between SLCO2, BD, and LAC.ResultsOne hundred eight patients were enrolled. There was a significant difference (p < 0.001) in SLCO2 between all blood loss groups: group 1, 46.9 mm Hg (44.9-49.0 mm Hg); group 2, 53.5 mm Hg (50.8-56.2 mm Hg); and group 3, 66.0 mm Hg (53.1-78.9 mm Hg). There were no significant (p > 0.05) differences for receiver operating characteristic curves between SLCO2, BD, or LAC.ConclusionSLCO2 differentiated blood loss groups. SLCO2 may be useful in triage of penetrating trauma patients.

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