Why Is It Necessary to Keep the Patient's PaO₂ Greater

question 69

Multiple Choice

Why is it necessary to keep the patient's PaO₂ greater than 60 mm Hg?

• A) A level of 60 mm Hg marks the beginning of the steep part of O₂Hb dissociation curve.
• B) Below the 60 mm Hg level, tissue hypoxia is ensured.
• C) Oxygen deprivation will cause severe cerebral vasoconstriction below 60 mm Hg.
• D) The PaCO₂ will start to rise precipitously if the PaO₂ falls further.

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Definitions:

Vocal Equipment

Refers to the structures within the body, such as the vocal cords and articulators, that are used to produce speech sounds.

Trait Variation

The difference in characteristics, often genetic, that occurs within individuals in a population.

Overregularizing

A phenomenon in language acquisition where children apply regular grammatical rules too widely, resulting in incorrect linguistic forms.

Cognitive Flexibility

The cognitive skill of moving between two distinct ideas, or the capacity to consider several ideas at the same time.