Regarding oxygenation indices the following
statements are correct EXCEPT for which
one?
a) Calculating venous admixture requires a pulmonary
artery flotation catheter
b) A PaO2:FiO2 ratio <26.6 kPa is a criterion for diagnosis of
ARDS
c) P (a – a) O2 is the respiratory index
d) Ideally an oxygenation index should not vary with
changes in FiO2
e) The alveolar gas equation is required for a
number of oxygenation indices
