Which of the following is the normal ratio of dead space to tidal volume (VD/VT)?
a. 0.2-0.4
b. 0.4-0.6
c. 0.6-0.8
d. 0.8-1.0
Q. 2 When using an SVN or pMDI with NPPV, where in the NPPV circuit should the device be placed to obtain the greatest aerosol deposition?
a. Before the leak port
b. Anywhere in the circuit
c. Between the NPPV and the humidifier
d. Between the leak port and the face mask
Q. 3 Which of the following ventilator graphics could be used to assess the response to bronchodilator therapy for a patient receiving mechanical ventilation with VC-CMV?
1. Pressure-time scalar
2. Flow-time scalar
3. Pressure-volume loop
4. Volume-time scalar
a. 1 and 2 only
b. 3 and 4 only
c. 1 and 3 only
d. 1, 2, and 4 only
Q. 4 Which of the following is recommended when administering aerosols to mechanically ventilated patients with a small-volume nebulizer?
a. Make sure the flow-by is turned on during administration.
b. Keep the HME in-line during the aerosol treatment.
c. Use the ventilator nebulizer system when appropriate.
d. Bypass the humidifier during the aerosol treatment.
Q. 5 A mechanically ventilated patient continues to have rhonchi after deep suctioning. The respirato-ry therapist should recommend which of the following?
a. Prone position
b. Vest Airway Clearance System
c. Prone position with the foot of the bed elevated 12 inches
d. Supine position with the foot of the bed elevated 18 inches
Q. 6 A physician and a respiratory therapist are performing bedside bronchoscopy of an invasively ventilated patient.
Fentanyl and midazolam were used for conscious sedation. After the bronchoscopy, the patient is not arousable. Which of the following should be done at this time?
a. Draw a sample for arterial blood gas de-terminations.
b. Increase the patient's respiratory rate.
c. Administer naloxone.
d. Administer atropine.