Dead Space Calculator

Calculate pulmonary dead space using the Bohr equation.
Enter arterial CO2, mixed expired CO2, and tidal volume to find the dead space fraction and volume.

Arterial CO2 partial pressure PaCO2 (mmHg)

Mixed expired CO2 partial pressure PECO2 (mmHg)

Tidal volume VT (mL)

Respiratory rate (breaths per minute)

Dead Space

Dead Space Calculator

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