Which of the following are -5 correct. The reasons for the Factors
affecting blood gas results are as
* -- follows
A. Increasing the rate or depth of
respiration may later lower the Pco2
considerably but does not alter
either the Po, or the Hb saturation,
B. Obstruction of small airways
means that air reach those alve oli
supplied by them; the composition
of blood leaving them will be near
that of venous blood
C. Only if gaseous flow due to
decreased respiratory exertion can
overcome the obstruction help to
correct the low Po2 and high Pco2
D. Some alveoli mav have air entry,
but much reduced blood supply
This is dead space
E. Increased ventilation will have no
effect, because there is littleblood to
interact with increased flow of
gases