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  • Title: A prospective randomized study of end points of resuscitation after major trauma: global oxygen transport indices versus organ-specific gastric mucosal pH.
    Author: Ivatury RR, Simon RJ, Islam S, Fueg A, Rohman M, Stahl WM.
    Journal: J Am Coll Surg; 1996 Aug; 183(2):145-54. PubMed ID: 8696546.
    Abstract:
    BACKGROUND: Gastric tonometry, as a method of organ-specific monitoring of the status of the splanchnic circulation, has demonstrated prognostic and therapeutic implications in critically ill patients. The experience with this method in patients with trauma has been limited. STUDY DESIGN: Fifty-seven patients were prospectively randomized into two groups: group 1, n = 30, normalization and maintenance of gastric mucosal pH (pHi) at or above 7.3 and group 2, n = 27, maintenance of oxygen delivery index of 600 or an oxygen consumption index of greater than 150. The groups had statistically similar injury severity scores, lactate levels, and base deficits. RESULTS: Of the 44 patients with pHi greater than 7.3 at 24 hours, three (6.8 percent) died of multiple organ dysfunction syndrome as compared with seven (53.9 percent) of 13 in whom pHi was not optimized, p = 0.006. Optimization times for oxygen delivery index, oxygen consumption index, lactate levels, and base excess were similar between survivors and nonsurvivors. The time for pHi optimization was significantly longer in nonsurvivors. Multiple organ dysfunction syndrome points were significantly higher in patients who did not have pHi optimized within 24 hours (6.08 compared with 2.5, p = 0.03). Optimization time for pHi was predictive of mortality on multiple regression. Persistently low pHi was frequently associated with systemic or intra-abdominal complications. It was the first finding in all the nonsurvivors at least 48 to 72 hours before death. CONCLUSIONS: Gastric mucosal pH may be an important marker to assess the adequacy of resuscitation. Monitoring of pHi may provide early warning for systemic complications in the postresuscitation period.
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