Vasopressin Deficiency in Hemorrhagic Shock

This is a prospective observational study. The only research-driven procedure will be the
removal of blood samples at designated time points(total blood removed 48 cc per patient).
Hemodynamic, fluid infusion and agitation/pain data (RAMSEY Score) will prospectively be
collected for research purposes. We will collect data from a convenience sample of patients
(when research staff is available) over a one year period.

Inclusion Criteria:

- Patient is a male or female patient presumed to be at least 18 years of age;

- Patient has a reported or actual systolic blood pressure < 90 mmHg within 1 hour of
arrival to the Emergency Room;

- Patient has clinical evidence of acute traumatic injury;

Exclusion Criteria:

- Patient is asystolic or requires CPR prior to arrival;

- Patient was transferred from an outside facility

- Patient known to be pregnant

- Patient known to be prisoner