Management of Hemorrhagic Shock with Severe Metabolic Acidosis

Immediate Resuscitation Protocol

The American College of Critical Care Medicine recommends administering 20 mL/kg bolus of lactated Ringer's solution over 15-30 minutes as the initial crystalloid choice, with a target systolic blood pressure of 80-100 mmHg until bleeding is controlled, permissive hypotension strategy 1, 3
The Critical Care Society suggests avoiding normal saline as it will worsen the metabolic acidosis through hyperchloremic mechanisms, and instead using lactated Ringer's or balanced crystalloids to improve base deficit 2
The Critical Care Medicine guidelines recommend maintaining hemoglobin at a minimum of 10 g/dL with blood products 6

The Praxis Medical Insights guidelines state that bicarbonate is indicated only when pH <7.2 and there is severe hemodynamic instability despite adequate volume resuscitation, and that sodium bicarbonate should not be given at this time based on the following criteria 3
The World Journal of Emergency Surgery recommends that if after 2-5 mEq/kg crystalloid resuscitation over 4-8 hours the pH remains <7.2 with persistent hemodynamic instability, then consider bicarbonate 2-5 mEq/kg IV over 4-8 hours 3

The Critical Care Medicine guidelines suggest avoiding hyperventilation and excessive PEEP in severely hypovolemic patients as it will further compromise venous return and cardiac output, and instead using mild hyperventilation to partially compensate for metabolic acidosis 1, 4, 5, 7
The Critical Care Medicine guidelines recommend using ketamine with atropine rather than propofol or etomidate to maintain cardiovascular stability if intubation is required 6

The Praxis Medical Insights guidelines recommend checking potassium, magnesium, calcium, and phosphate immediately, and monitoring for hyperkalemia as acidosis corrects with resuscitation 3
The Praxis Medical Insights guidelines suggest replacing magnesium if <0.75 mmol/L as hypomagnesemia impairs other electrolyte corrections 3

The World Journal of Emergency Surgery guidelines recommend administering broad-spectrum antibiotics immediately given the risk of bacterial translocation from gut hypoperfusion, and considering tranexamic acid 10-15 mg/kg followed by 1-5 mg/kg/hour infusion if trauma-related bleeding 8, 1, 4, 5
The Critical Care Medicine guidelines suggest correcting coagulopathy with fresh frozen plasma if PT/PTT elevated, but avoiding rapid push due to hypotensive effects from vasoactive kinins 6

The Critical Care Medicine guidelines recommend preventing hypothermia aggressively as it worsens coagulopathy and acidosis, and using forced-air warming devices to warm all IV fluids and blood products 1, 4