Shock index
The shock index (SI) is the heart rate (HR) divided by systolic blood pressure (SBP) .
The pretransport shock index can predict the need for resuscitation in the hospital[1].
Other variations are[2]:
- Shock index (SI) is the heart rate / systolic blood pressure (SBP). The normal range is 0.5–0.7
- Modified Shock Index (MSI) is the heart rate / mean arterial pressure (MAP)
- Age Shock Index (age SI) is SI * age.
Of these three measures, for GI bleeding, Age SI may better prognosticate[2].
References
- ↑ St John AE, McCoy AM, Moyes AG, Guyette FX, Bulger EM, Sayre MR (2018). "Prehospital Lactate Predicts Need for Resuscitative Care in Non-hypotensive Trauma Patients". West J Emerg Med. 19 (2): 224–231. doi:10.5811/westjem.2017.10.34674. PMC 5851492. PMID 29560047.
- ↑ 2.0 2.1 Kocaoğlu S, Çetinkaya HB (2021). "Use of age shock index in determining severity of illness in patients presenting to the emergency department with gastrointestinal bleeding". Am J Emerg Med. 47: 274–278. doi:10.1016/j.ajem.2021.05.008. PMID 33993044 Check
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