Author Question: Which of the following mechanisms is incorporated into the CareFusion V.I.P. Bird In-fant-Pediatric ... (Read 59 times)

khang · **on:** Jul 16, 2018

Which of the following mechanisms is incorporated into the CareFusion V.I.P. Bird In-fant-Pediatric Ventilator to prevent the risk of auto-PEEP during ventilation with the time-cycled modes?

a. Jet Venturi in the exhalation manifold
b. Accumulator before the pneumatic regu-lator
c. Differential pressure transducer by the control diaphragm
d. Pulsation dampener between the regulator and the flow control

Question 2

The volume delivered by a time-triggered, pressure-limited, time-cycled infant ventilator is de-pendent on which of the following factors?

1. Positive end-expiratory pressure level
2. Airway resistance
3. Lung compliance
4. Chest wall compliance
a. 1 and 3 c. 2, 3, and 4
b. 1, 2, and 4 d. 1, 2, 3, and 4

nhea · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: A
Because of the possibility of inadvertent positive end-expiratory pressure developing from the continuous flow present in the expiratory limb of the patient circuit during time-cycled, pres-sure-limited ventilation, a jet Venturi is incorporated into the exhalation manifold.

Answer to Question 2

ANS: C
Changes in the patient's airway resistance, lung compliance, and chest wall compliance can alter the volume delivered to the patient. Lower volumes are delivered when airway resistance is high or lung and chest wall compliance are low.