Calculate the inspiratory to expiratory (I:E) ratio for a ...

[bucstennis@aim.com]

Calculate the inspiratory to expiratory (I:E) ratio for a ventilator that is set to deliver 850 mL at a frequency of 15 breaths/min with a flow rate of 45 L/min.
 
  a. 1:1.1
  b. 1:2.5
  c. 1:3.5
  d. 1:4

Question 2

Calculate the inspiratory to expiratory (I:E) ratio when the inspiratory time is 0.5 second and the respiratory rate is 30 breaths/min.
 
  a. 1:3
  b. 1:4
  c. 4:1
  d. 3:1

[sailorcrescent]

Answer to Question 1

ANS: B
Minute ventilation equals respiratory rate multiplied by tidal volume.

Answer to Question 2

ANS: A
Total Cycle Time (TCT) = 60 sec/f; TCT  Inspiratory Time (TI) = Expiratory Time (TE); TI:TE = 1:X.

[bucstennis@aim.com]

Correct answers!

[sailorcrescent]

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