How Should the Therapist Interpret a Preductal-To-Postductal PaO₂ Difference of 8

question 23

Multiple Choice

How should the therapist interpret a preductal-to-postductal PaO₂ difference of 8 mm Hg in a neonate?

• A)Unreliable data
• B)Absence of ductal shunting
• C)Presence of ductal shunting
• D)Inconclusive data

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Definitions:

Precipitation

The process by which a substance in solution undergoes a chemical reaction to form a solid, which then separates from the solution.

Biological Activity

The effect of a substance on living organisms, tissues, or cells, indicative of its potential therapeutic effects or toxicities.

Tertiary Structure

The three-dimensional shape of a protein molecule determined by interactions among its amino acids' side chains, beyond simple folding.

H-Bonds

Hydrogen bonds, a type of weak chemical bond that occurs when a hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom.