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Kitcat

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What was the conclusion of a study performed by Darquenne and Prisk comparing upper respiratory tract deposition of aerosol particles nebulized with heliox versus air?

A. The two gases are equally effective for nebulization and particle delivery to the patients' lungs.
B. Air is more effective for particle deposition to the large airways than to the small ones.
C. Heliox appears to better favor particle deposition to the peripheral airways than to the large airways.
D. The data from this study are inconclusive.

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Stacks711

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ANS: C
A. Incorrect response: See explanation C.
B. Incorrect response: See explanation C.
C. Correct response: Darquenne and Prisk used a radionuclide approach to compare upper respiratory tract deposition with heliox versus air and concluded that heliox might reduce deposition in the upper respiratory tract and increase deposition in the distal airways and alveoli.
D. Incorrect response: See explanation C.

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Hillary

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Here to give you a feedback, your answer was right! Awesome