Work out lung compliance instantly with clear inputs, formula shown and shareable results.
Divides tidal volume by driving pressure (plateau minus PEEP) to give static respiratory system compliance.
Static compliance
Cstat = tidal volume / (plateau pressure - PEEP)
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
50 to 100 mL/cmH2O in a passively ventilated adult; ARDS often drops below 40.
Driving pressure above about 15 cmH2O is associated with worse outcomes in ARDS independently of tidal volume.