Template:Shock index

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Shock index (SI)[1]

SI = HR / SBP

  • Used when HR and SBP do not predict severity of hypovolemia in early stages
  • May be used as secondary triage tool in mass casulty[2]
  • 0.5-0.7 is normal
  • >0.70-0.75 for occult shock or requirement of life-saving intervention
  1. ↑ Levitan, Richard M. Fundamentals of Airway Management. 3rd ed. Irving, TX: Emergency Medicine Residents' Association, 2015.
  2. ↑ Vassallo J et al. Usefulness of the Shock Index as a secondary triage tool. J R Army Med Corps. 2015 Mar;161(1):53-7.
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