Early resuscitation with low-volume PolyDCLHb is effective in the treatment of shock induced by penetrating vascular injury.

OBJECTIVE To study the efficacy of an oxygen-carrying solution in early resuscitation of hemorrhagic shock induced by penetrating vascular injury. DESIGN Experimental study with anesthetized rats. MATERIALS AND METHODS Severe hemorrhagic shock was induced by a 25-gauge needle puncture to the infrarenal aorta. Forty animals were resuscitated 10 minutes after injury with either lactated Ringer's solution (LR; 60 mL/kg), 7.5% hypertonic saline (HTS; 5 mL/kg), or modified diaspirin cross-linked hemoglobin (PolyDCLHb; 5 or 20 mL/kg) or were not resuscitated (NR) and followed for 6 hours. RESULTS Total blood loss was similar in all treatment groups. Mean arterial pressure was restored to baseline values, base deficit was corrected to base excess, and venous oxygen saturation improved with PolyDCLHb and more slowly with LR but persisted below baseline values with HTS and NR. The 6-hour mortality rates were zero of eight (low-dose PolyDCLHb), three of eight (high-dose PolyDCLHb), two of eight (LR), six of eight (HTS), and six of eight (NR). CONCLUSION Early resuscitation with low-volume hemoglobin is effective in restoring tissue perfusion and improving survival in uncontrolled hemorrhagic shock.

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