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bobsthename bobsthename
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A month ago
A patient with pneumonia develops what is believed to be an absolute pulmonary shunt. Oxygen therapy has been initiated per venti-mask. The nurse would expect which effect on the patient's hypoxemia?
1. It will be unchanged.
2. It will worsen.
3. It will be relieved.
4. It will initially improve, then worsen again.
Textbook 

High-Acuity Nursing


Edition: 6th
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violin13violin13
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A month ago
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More questions for this book are available here
The answer is 2
Rationales:
1. When alveoli are nonfunctional, diffusion cannot occur and oxygen is not exchanged. As the patient continues to use oxygen, hypoxemia will not remain unchanged.
2. An absolute shunt is the combination of blood that does not take part in gas exchange and the normal flow of blood past unventilated alveoli. Because the alveoli are nonfunctioning, an absolute shunt is refractory to oxygen therapy. Because the patient is continuing to use oxygen, hypoxemia will worsen.
3. Absolute shunts are refractory to oxygen therapy.
4. Absolute shunts are refractory to oxygen therapy.
1

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bobsthename Author
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A month ago
Good timing, thanks!
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Yesterday
Thanks for your help!!
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2 hours ago
Brilliant
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