What Physiologic Parameters Are Indicative of Severe Injury in Trauma?

Authors selected 138 articles reporting results of 134 studies from an initially identified 4,188 studies. Ninety-six studies were retrospective, and the remainder were prospective studies. Included studies used different predictors for serious injury, with many using more than one. Individual parameters included systolic blood pressure, shock index, pulse rate, lactate level, respiratory rate, and qualitative summaries of pulse rate variability or complexity, base deficit, and oxygen saturation.

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