Compliance Definition — FRCA Primary MCQ
Instant feedback + full explanation. One question, done properly.
Educational content. Not a substitute for clinical judgement or local policy.
Reveal the answer and explanation
Correct answer: E — It is defined as the change in volume per unit change in pressure
Compliance = ΔV/ΔP (change in volume per unit change in pressure). Normal lung compliance is approximately 200 mL/cmH2O. Static compliance is measured under no-flow conditions (reflects elastic recoil only). Dynamic compliance includes airway resistance effects and is always less than or equal to static compliance. Surfactant increases compliance by reducing surface tension.
Reference: Power Kam 2018 Principles of Physiology for the Anaesthetist