This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.

Shock Index

Heart rate ÷ systolic blood pressure – with age-adjusted classification (SIPA) in 4–16-year-olds

Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.

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Sources

Pediatric specific shock index accurately identifies severely injured children (J Pediatr Surg 50:331–334) Acker SN, Ross JT, Partrick DA, Tong S, Bensard DD, 2015. Original paper (not freely accessible; cut-offs per follow-up studies)
Prospective validation of the shock index pediatric-adjusted (SIPA) in blunt liver and spleen trauma: an ATOMAC+ study (J Pediatr Surg 52:340–344) Linnaus ME, Notrica DM, Langlais CS, et al., 2017. Validation study
Schockindex (Dtsch Med Wochenschr 92:1947–1950) Allgöwer M, Burri C, 1967. Original article (first description, adults)

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Note

Calculation aid for healthcare professionals. Clinical assessment remains with the treating physician.

Review date of the German original: 2026-11-05 · Methodology

Frequently asked questions

Shock Index: What does this calculator compute?

Shock index (heart rate ÷ systolic blood pressure) with classification according to the age-adjusted pediatric cut-offs (SIPA: 1.22 / 1.0 / 0.9) or the threshold customary in adults of 0.9–1.0.

Shock Index: Which sources is this calculator based on?

Acker SN, Ross JT, Partrick DA, Tong S, Bensard DD: Pediatric specific shock index accurately identifies severely injured children (J Pediatr Surg 50:331–334) (2015); Linnaus ME, Notrica DM, Langlais CS, et al.: Prospective validation of the shock index pediatric-adjusted (SIPA) in blunt liver and spleen trauma: an ATOMAC+ study (J Pediatr Surg 52:340–344) (2017); Allgöwer M, Burri C: Schockindex (Dtsch Med Wochenschr 92:1947–1950) (1967)