The most probable explanation for the flip-flop phenomenon in the newborn is:

a. oxygen (O2) toxicity.
b. right-to-left shunting.
c. cardiac disease.
d. reactive pulmonary vasoconstriction.

ANS: D
When the FiO2 is increased to original levels, the PaO2 fails to improve, which is probably be-cause of reactive pulmonary vasoconstriction.

Health Professions

You might also like to view...

________ drugs are held under the tongue, where they are absorbed through the tissues and into the bloodstream for distribution to the body

a. Oral b. Sublingual c. Both a and b d. Neither a nor b

Health Professions

Antimicrobial means ___________

a. sterilization b. disinfection c. growth inhibitor d. all of the above

Health Professions