Calculator

Shock index

New

Heart rate ÷ systolic BP.

/min
mmHg

Shock index

1.33

≥ 1: suggests significant shock

Normal (0.5-0.7)
Borderline
≥ 1: suggests significant shock

Formula

hr / sbp

References

  1. Allgower M, Burri C. Shock index. Dtsch Med Wochenschr 1967;92:1947-50.

Used in

ABCDE approach to the deteriorating patientRecognising and classifying shockRecognition: Sepsis-3, SOFA and screeningPrimary survey and massive transfusionChest and abdominal traumaRapid sequence induction: drugs and technique

Calculators support, not replace, clinical judgement. Check inputs and units, and confirm doses with your unit protocol.