Dead Space / Alveolar Ventilation Calculator

Estimates anatomic dead space, alveolar tidal volume, and alveolar minute ventilation.

Inputs

Color mode links each input to the matching equation term and solving arithmetic.

Equation and Work

Equation:
Solving steps:
Anatomic VD
—
mL
Alveolar VA
—
mL
Alveolar minute ventilation
—
L/min
Reference: Approximate anatomic dead space is 1 mL/lb or 2 mL/kg. The reference notes that physiologic dead space is a different, more complicated equation.

Clinical Significance

This page estimates anatomic dead space and alveolar ventilation from body weight, tidal volume, and frequency.

It separates the portion of tidal volume estimated to remain in conducting airways from the portion available for alveolar ventilation.

This is an anatomic estimate only and is not the physiologic dead-space equation.

References (APA 7th Edition)

  1. Attached equations reference supplied by the user for calculator equation confirmation.