The therapist is preparing to nebulize a medication via heliox to ...

[KimWrice]

The therapist is preparing to nebulize a medication via heliox to a spontaneously breathing patient who is already receiving heliox. Which of the following pieces of equipment will the therapist need to assemble for this procedure? I. nasal cannula II. valved O2 mask III. 2 one-way valves IV. Y-connector
 
  A. I, III only
  B. II, IV only
  C. I, II, IV only
  D. II, III, IV only

Question 2

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.

[juwms]

Answer to Question 1

ANS: C
A. Incorrect response: See explanation C.
B. Incorrect response: See explanation C.
C. Correct response: For spontaneously breathing patients, heliox is administered by face mask with a reservoir bag. A Y-piece is attached to the mask to enable concurrent delivery of aerosolized medications. Sufficient flow to maintain the reservoir bag inflated is required. The flow is often maintained at 12 to 15 L/minute. The patient consumes approximately three to six cylinders per day.
D. Incorrect response: See explanation C.

Answer to Question 2

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.

[KimWrice]

Excellent

[at]

Gracias!