UMEM Educational Pearls

Category: Critical Care

Title: Mechanical Ventilation in Shock

Posted: 11/14/2017 by Mike Winters, MD (Updated: 10/23/2020)
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Mechanical Ventilation in Shock

  • Emergency physicians and intensivists routinely resuscitate patients in shock.
  • For patients who manifest signs of persistent shock (i.e., rising lactate), consider intubation and mechanical ventilation, even in the absence of acute respiratory failure.
  • The respiratory muscles are avid consumers of oxygen.  In fact, up to 50% of available O2 can be used by the respiratory muscles to perform the work of breathing.
  • Initiation of mechanical ventilation can reduce oxygen consumption and allow oxygen to be shunted to other vital organs.


Gidwani H, Gomez H. The crashing patient: hemodynamic collapse. Curr Opin Crit Care 2017; 23:533-540.