A patient undergoing incentive spirometry should be monitored for ...

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A patient undergoing incentive spirometry should be monitored for outcome by assessing which of the following?
 
  1. Forced expiratory volume at 1 second (FEV1)
  2. Peak expiratory flow
  3. Partial pressure of arterial oxygen (PaO2)
  4. Blood pressure
  a. 1 and 2 c. 1 and 4
  b. 2 and 3 d. 3 and 4

Question 2

A patient is able to sustain a flow of 900 cc/s to hold the ball of a flow-oriented incentive spi-rometer aloft for 2 seconds. Her inspired volume is ____ L.
 
  a. 0.18 c. 1.45
  b. 0.90 d. 1.80

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Answer to Question 1

ANS: B
When assessing for outcome from incentive spirometry, the respiratory therapist is looking for the absence of or an improvement in signs of atelectasis. These signs are decreased respiratory rate, resolution of fever, normal pulse rate, improved breath sounds, a normal chest radiograph, im-proved arterial oxygenation, increased vital capacity and peak expiratory flows, return of func-tional residual capacity or vital capacity to preoperative values, and improved inspiratory muscle performance.

Answer to Question 2

ANS: D
Flow = Tidal volume  Inspiratory time.
Tidal volume = Flow  Inspiratory time.
Tidal volume = 900 mL/s  2 s = 1800 mL, or 1.80 L.