Pulmonary Artery Pressure Normal — 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: D — Normal pulmonary artery systolic pressure is approximately 25 mmHg
The pulmonary circulation is a low-pressure low-resistance system. Normal PA pressures: systolic ~25 mmHg / diastolic ~10 mmHg / mean ~15 mmHg. PVR is approximately one-tenth of SVR. The pulmonary vasculature has unique autoregulation: hypoxic pulmonary vasoconstriction (opposite to systemic vessels which dilate in response to hypoxia).
Reference: Power Kam 2018 Principles of Physiology for the Anaesthetist