Background: Thirst perception involves neurochemical signals attributed to acute elevation of arginine vasopressin (AVP) and angiotensin II (AT2) levels, and may accompany acute hemorrhage.
Objective: To determine whether thirst or plasma AVP or AT2 levels predict hemorrhagic shock, injury severity, or outcome in trauma patients at initial presentation.
Methods: This was a prospective case series of adult subjects presenting as trauma activations to an urban level I trauma center.