A Patient with a Normal PaO₂ and Cardiac Output Is

question 60

Multiple Choice

A patient with a normal PaO₂ and cardiac output is exhibiting signs and symptoms of tissue hypoxia. What is the most likely cause?

• A)hemoglobin deficiency
• B)low ambient PO₂
• C)right-to-left shunt
• D)hypoventilation

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Definitions:

Gastric Juice

A acidic fluid secreted by the stomach glands and active in promoting digestion.

Gastric Secretion

The process of producing and releasing fluids, including hydrochloric acid and digestive enzymes, by the stomach's lining.

Muscularis

A layer of muscle in the walls of hollow organs, such as the gastrointestinal tract, responsible for movement of the organ's contents.

Rugae

Folds or ridges found on internal organ surfaces to increase surface area for secretion and absorption.