iGuyton is a hemodynamic calculator based on Arthur Guyton’s physiological model of circulatory regulation, designed for anesthesiologists, intensivists, and critical care professionals.

By entering patient-specific parameters (CVP, MAP, CO, age, height, and weight), the app computes:

PMSA (Mean Systemic Filling Pressure)

PVR (Peripheral Vascular Resistance)

Eh (Venous Return Elastance)

The app offers a clear and practical interface, suitable for use in intensive care units, operating rooms, and educational simulations.

Features include:

Real-time calculation of key circulatory parameters

Support for light and dark modes with soft, eye-friendly color schemes

A panel-based layout for intuitive navigation

Educational aids for exploring the concepts behind Guytonian physiology

iGuyton supports clinical reasoning in the assessment and management of hemodynamic instability.