SurgCritCare calculator

Shock Index

Rapid bedside indicator of hemodynamic instability.

Heart rate bpmSystolic BP mmHg

Formula: Shock Index = Heart Rate / Systolic Blood Pressure
Clinical context: Shock Index > 1.0 suggests significant hemodynamic compromise.
Limitations: Interpret in clinical context. May be falsely reassuring in elderly patients or beta-blocker use.
Source note: Allgower M, Burri C. Shock index. Dtsch Med Wochenschr 1967.

SurgCritCare

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SurgCritCare calculator

Rapid bedside indicator of hemodynamic instability.

Heart rate bpmSystolic BP mmHg

Formula: Shock Index = Heart Rate / Systolic Blood Pressure
Clinical context: Shock Index > 1.0 suggests significant hemodynamic compromise.
Limitations: Interpret in clinical context. May be falsely reassuring in elderly patients or beta-blocker use.
Source note: Allgower M, Burri C. Shock index. Dtsch Med Wochenschr 1967.