Use Resistive WOB when you need to compute resistive work of breathing per breath as resistance times inspiratory flow times tidal volume, converted to joules with 0.0981 J per cmH2O-L. Enter Airway resistance, Inspiratory flow, and Tidal volume using the definitions and units below so the result can be reproduced.

Airway resistance

A finite measured or assumed value, expressed in cmH2O/L/s.

Inspiratory flow

A finite measured or assumed value, expressed in L/s.

Tidal volume

A finite measured or assumed value, expressed in L.

The published tool contract uses this rule: Compute resistive work of breathing per breath as resistance times inspiratory flow times tidal volume, converted to joules with 0.0981 J per cmH2O-L.

Resistive work per breath

The calculated resistive work per breath in J/breath.

The calculation does not propagate measurement uncertainty, sampling error, or biological and chemical variability.

Retain the original Airway resistance, Inspiratory flow, and Tidal volume values and their units alongside the result. Elastic WOB is useful when you instead need to compute elastic work of breathing per breath as one half times elastance times tidal volume squared, converted to joules with 0.0981 J per cmH2O-L. Work Of Breathing provides another view by helping you convert a ventilatory pressure into mechanical work per liter of ventilation using the 0.0981 J/L per cmH2O factor.

• Elastic WOB

  Compute elastic work of breathing per breath as one half times elastance times tidal volume squared, converted to joules with 0.0981 J per cmH2O-L.

• Work Of Breathing

  Convert a ventilatory pressure into mechanical work per liter of ventilation using the 0.0981 J/L per cmH2O factor.

• Stroke Work Calculator

  Compute left ventricular stroke work from stroke volume and pressure gradient.