Emergency Medicine · ICU and Critical Care
Modified Shock Index (Allcock) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
/min
Allowed range: 20–250 /min
Quick picks
mm Hg
Allowed range: 40–300 mm Hg
Quick picks
mm Hg
Allowed range: 20–200 mm Hg
Quick picks
Result
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Clinical inputs
- Heart rate (/min)Accepted range: 20 to 250
- Systolic blood pressure (mm Hg)Accepted range: 40 to 300
- Diastolic blood pressure (mm Hg)Accepted range: 20 to 200
Primary source
Allcock TM et al. The modified shock index: an emergency department triage tool for predicting morbidity and mortality. Am J Emerg Med. DOI: 10.1016/j.ajem.2014.10.052. PMID: 25536449. Scope: modified shock index calculated as heart rate divided by mean arterial pressure (mm Hg). (2015)
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