basic

Pulse Pressure & Shock Index Calculator

PP = SBP − DBP; SI = HR / SBP.

Compute the pulse pressure (SBP − DBP) and the shock index (heart rate ÷ systolic BP). Shock index ≥ 1.0 suggests haemodynamic instability.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

mm Hg
mm Hg
bpm

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

PP = SBP − DBP; SI = HR / SBP.

In depth

Compute the pulse pressure (SBP − DBP) and the shock index (heart rate ÷ systolic BP). Shock index ≥ 1.0 suggests haemodynamic instability.