Emergency Medicine · Critical Care
Modified Shock Index (Allcock) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
Complete all required inputs to calculate the score.
Formula 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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