AVERT Shock: Arginine Vasopressin During the Early Resuscitation of Traumatic Shock

After receiving greater than 6 units of blood product within the first 12 hours of admission, trauma patients will be randomized to either normal saline or vasopressin. Subjects will receive an initial 4 unit bolus followed by an infusion of 0 to 0.04 units titrated to maintain a mean arterial blood pressure of equal to or greater than 65 mmHg for a total of 48 hours.