Balancing Fluid Restriction vs Early Vasopressors in Trauma-Induced Shock

Initial Approach to Trauma-Induced Shock

The American College of Surgeons recommends implementing a restricted volume replacement strategy with permissive hypotension as the first-line approach until bleeding is controlled, targeting a systolic blood pressure of 80-90 mmHg in patients without traumatic brain injury (TBI) or spinal cord injury 1, 2, 3
Balanced crystalloid solutions should be used as the initial fluid of choice, limiting 0.9% sodium chloride to a maximum of 1-1.5L if used, and avoiding hypotonic solutions such as Ringer's lactate in patients with severe head trauma 4

The American Heart Association suggests that traumatic brain injury and spinal cord injury require adequate perfusion pressure for tissue oxygenation of the injured central nervous system, and elderly patients may not tolerate permissive hypotension 5

The Society of Critical Care Medicine warns that aggressive crystalloid resuscitation can increase hydrostatic pressure on wounds and dislodge blood clots, and large-volume fluid administration dilutes coagulation factors and increases risk of coagulopathy 6
Several retrospective studies suggest increased mortality or no benefit when vasopressors are used early in trauma, and vasopressors may potentiate vasoconstriction and further reduce organ perfusion 2