ICU physiology at the bedside

Shock profiles from line data.

Two focused calculators for flow, resistance, filling pressures, and oxygen transport. Pick the monitor you have and get to the physiology quickly.

Central Line Calculator Swan-Ganz Interpreter

Central Line

For arterial pressure, CVP, hemoglobin, SaO2, and ScvO2.
  • CO / CI
  • SVR
  • ScvO2 estimate
  • VO2 assumption
Open tool

Swan-Ganz

For RAP, PA pressures, wedge, output, saturations, and lactate.
  • PVR / SVR
  • TPG / DPG
  • RV-LV pattern
  • DO2 / O2ER
Open tool

Quick guide

Use the invasive data you actually have.

Central line data is ideal when you need a fast Fick-style estimate without a PA catheter.

Question Central Line Swan-Ganz
Best for Estimated systemic flow Full pressure-profile interpretation
Needs CVP, BP, Hb, SaO2, ScvO2 RAP, PA, PCWP, CO/CI, SvO2
Shows CO, CI, SVR, oxygen gap PVR, gradients, stroke work, RV/LV clues

Educational support only. ShockCal outputs depend on assumptions and should not replace validated monitoring, clinical judgment, or institutional protocols.