Ti equals TCT divided by the number of parts allocated to inspiration. Which option reflects this relationship?

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Ti is the time allocated to the inspiratory phase within one breathing cycle. If the inspiratory portion is divided into a certain number of equal parts, each part takes up Ti, so Ti equals the total cycle time divided by the number of inspiratory parts. That’s why describing the number of inspiratory parts best reflects this relationship. Expiration portions determine the time for exhalation, not the division of the cycle for inspiration. The respiratory rate affects how often cycles occur, not how Ti relates to the total cycle time. PEEP is a pressure setting during expiration and doesn’t define Ti.