Hypothesis: Normal resuscitation (oxygen delivery index [DO 2 I] Ն500 mL/min per square meter), compared with supranormal trauma resuscitation (DO 2 I Ն600 mL/min per square meter), requires less crystalloid volume, thus decreasing the incidence of intra-abdominal hypertension (IAH) and abdominal compartment syndrome (ACS). Design: Retrospective analysis of a prospective database. Setting: Twenty-bed intensive care unit (ICU) in a regional level I trauma center. Patients: Patients with major trauma (injury severity score Ͼ15, initial base deficit Ն6 mEq/L, or need for Ն6 units of packed red blood cells in the first 12 hours) or age 65 years or older with any 2 of the previous criteria. Interventions: Shock/trauma resuscitation protocol: pulmonary artery catheter, gastric tonometry, urinary bladder pressure measurements, lactated Ringer infusion, packed red blood cell transfusion, and moderate inotrope support, as needed, in that sequence, to attain and maintain a DO 2 I greater than or equal to 600 mL/min per m 2 (16 months, ending January 1, 2001, n=85) or a DO 2 I greater than or equal to 500 mL/min per square meter (16 months, starting January 1, 2001, n=71) for the first 24 hours in the ICU. Main Outcome Measures: Lactated Ringer infusion volume (liters) at ICU admission, gastric partial carbon dioxide minus end-tidal carbon dioxide (GAP CO2), IAH (urinary bladder pressure measurements Ͼ20 mm Hg), ACS (urinary bladder pressure measurements Ͼ25 mm Hg with organ dysfunction), multiple organ failure, and mortality. Results: Demographics, injury severity, and shock severity parameters were similar in both groups. The supranormal resuscitation group required more lactated Ringer infusion volume in the first 24 hours in the ICU (mean ± SD, 13 ± 2 vs 7 ± 1 L; PϽ.05) and had higher GAP CO2 (16 ± 2 vs 7 ± 1 mm Hg; PϽ.05). In the supranormal group, IAH (42% vs 20%; PϽ.05) and ACS (16% vs 8%; PϽ.05) were more frequent. The conventional trauma outcomes, such as multiple organ failure (22% vs 9%; PϽ.05) and mortality (27% vs 11%; PϽ.05) were less favorable in the supranormal resuscitation group. Conclusion: Supranormal resuscitation, compared with normal resuscitation, was associated with more lactated Ringer infusion, decreased intestinal perfusion (higher GAP CO2), and an increased incidence of IAH, ACS, multiple organ failure, and death.