An I:E ratio of 1:3 indicates what about inspiration versus expiration?

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Multiple Choice

An I:E ratio of 1:3 indicates what about inspiration versus expiration?

Explanation:
An I:E ratio shows how long the inhalation phase lasts compared with the exhalation phase. A 1:3 ratio means the inspiratory time is one part and the expiratory time is three parts. So, inspiration lasts shorter and expiration lasts longer—about three times as long as inhalation. This longer exhalation helps reduce air-trapping and gives more time for gas exchange during the breath cycle.

An I:E ratio shows how long the inhalation phase lasts compared with the exhalation phase. A 1:3 ratio means the inspiratory time is one part and the expiratory time is three parts. So, inspiration lasts shorter and expiration lasts longer—about three times as long as inhalation. This longer exhalation helps reduce air-trapping and gives more time for gas exchange during the breath cycle.

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