Abstract
Background. Continuous and minimally invasive near-infrared spectroscopy (NIRS)-derived gastric
tissue oxygen saturation (GStO2) and muscle tissue oxygen saturation (MStO2) were evaluated in a clinically relevant porcine model of hemorrhagic shock and abdominal
compartment syndrome (ACS). Methods. Phenobarbital-anesthetized swine underwent pulmonary artery catheter insertion for
mixed venous oxygen saturation (SvO2) measurement and midline laparotomy to permit placement of a gastric NIRS probe,
a jejunal (regional carbon dioxide [PrCO2]) tonometer, superior mesenteric artery (SMA) flow probe, and a portal vein oxygen
saturation (SpvO2) catheter. A muscle NIRS probe was placed on the front limb. After randomization,
Group 1 underwent hemorrhage and resuscitation. Group 2 had no hemorrhage or resuscitation.
ACS was induced by peritoneal fluid infusion in both groups. A significant decrease
in SMA flow, SpvO2, GStO2, SvO2, and MStO2 was observed after hemorrhage in Group 1 and with abdominal hypertension in both
groups. Results. GStO2 significantly correlated with SMA flow (Group 1: r2 = 0.90; Group 2: r2 = 0.83) and mesenteric oxygen delivery (mesenteric oxygen delivery, Group 1: r2 = 0.73; Group 2: r2 = 0.89). MStO2 significantly correlated with SvO2 (Group 1: r2 = 0.99; Group 2: r2 = 0.65) and systemic oxygen delivery (SDO2, Group 1: r2 = 0.60; Group 2: r2 = 0.88). Tonometer-derived PrCO2 values did not change at any time point in either group. Conclusions. NIRS measurement of GStO2 and MStO2 reflected changes in mesenteric and systemic perfusion respectively during hemorrhage
and ACS. (Surgery 2001;129:363-70.)
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Article info
Publication history
Accepted:
September 18,
2000
Footnotes
☆Supported by the Department of Surgery, University of Miami School of Medicine and by Hutchinson Technology, Inc, Hutchinson, Minn.
☆☆Reprint requests: Stephen M. Cohn, MD, Chief, Divisions of Trauma and Surgical Critical Care, Department of Surgery, University of Miami School of Medicine, P.O. Box 016960 (D40) Miami, FL 33101.
★Surgery 2001;129:363-70.
Identification
Copyright
© 2001 Mosby, Inc. Published by Elsevier Inc. All rights reserved.
