Use Work Of Breathing when you need to convert a ventilatory pressure into mechanical work per liter of ventilation using the 0.0981 J/L per cmH2O factor. Enter Pressure using the definitions and units below so the result can be reproduced.

Pressure

A finite measured or assumed value greater than or equal to 0, expressed in cmH2O.

The published tool contract uses this rule: Convert a ventilatory pressure into mechanical work per liter of ventilation using the 0.0981 J/L per cmH2O factor.

Work of breathing

The calculated work of breathing in J/L.

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

Retain the original Pressure 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. Resistive WOB provides another view by helping you 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.

• 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.

• Resistive WOB

  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.

• Stroke Work Calculator

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