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Author Question: What does alveolar gas transport depend on during HFV? A. Vt equaling Vd B. ventilationperfusion ... (Read 49 times)

savannahhooper

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on: Jul 16, 2018
What does alveolar gas transport depend on during HFV?
 
  A. Vt equaling Vd
  B. ventilationperfusio n matching
  C. mean airway pressure
  D. respiratory frequency

Question 2

What is the relationship between the patient's anatomic dead space volume and the tidal volume during HFV?
 
  A. The tidal volume is often less than the anatomic dead space volume.
  B. The tidal volume is often more than the anatomic dead space volume.
  C. The tidal volume is often equal to the anatomic dead space volume.
  D. No relationship exists between the Vt and the anatomic dead space volume.


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mfedorka

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: B
A. Incorrect response: See explanation B.
B. Correct response: Alveolar-capillary gas transport ring HFV depends on matching alveolar ventilation and pulmonary capillary perfusion.
C. Incorrect response: See explanation B.
D. Incorrect response: See explanation B.

Answer to Question 2

ANS: A
A. Correct response: Jet or oscillator tidal breaths are usually small and are often less than the patient anatomic dead space volume. The relationship between effective alveolar ventilation and the respiratory rate (VA= fVt  Vd) becomes meaningless when the Vt is less than the Vd.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.


savannahhooper

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Reply 2 on: Jul 16, 2018
Excellent

scikid

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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