In administering intermittent positive-pressure breathing therapy, which of the following breath-ing patterns would be most desirable?
a. 6 to 8 breaths/min, inspiration/expiration ratio (I:E) of 1:3
b. 8 to 10 breaths/min, I:E of 1:1
c. 12 to 15 breaths/min, I:E of 1:2
d. 6 to 8 breaths/min, I:E of 1:1
ANS: A
Generally, the goal is to establish a breathing pattern consisting of approximately 6 breaths/min, with an expiratory time of at least 3 to 4 times longer than inspiration (I:E ratio of 1:3 to 1:4 or lower).
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