What is the inspiratory time for a frequency of 20 breaths/min and an inspiratory time-to-expiratory time ratio of 1:3?
A) 0.25 second
B) 0.75 second
C) 1.00 second
D) 1.33 seconds

Question

Quizplus · Accepted Answer

Total cycle time = 60 s ÷ frequency = 60 ÷ 20 = 3 s.There are four equal parts to the total cycle time (add the "I" from the inspiratory time-to-expiratory time ratio to the "E" from the inspiratory time-to-expiratory time ratio,or 1 + 3 = 4).Inspiratory time = Total cycle time ÷ (I + E)= 3 ÷ 4 = 0.75 s.

What Is the Inspiratory Time for a Frequency of 20