Physiology

at a Glance

Jeremy P. T. Ward, Roger W. A. Linden

Multiple Choice: Chapter 33 Ventilation-perfusion matching and right to left shunts

Question 33.1 In a situation where there is a ventilation–perfusion mismatch with a VA/Q value of less than unity, i.e. shunt effect

A there is no gas exchange
B the blood has a lower than normal Po2, and a higher than normal Pco2
C the blood has a higher than normal Po2, and a lower than normal Pco2
D there is excessive ventilation