Total Cycle Time (TCT) is equal to 60 divided by which parameter?

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Multiple Choice

Total Cycle Time (TCT) is equal to 60 divided by which parameter?

Total Cycle Time is the time for one complete breath. When you’re given breaths per minute, you can convert to seconds per breath by dividing 60 by the respiratory rate, so the cycle time equals 60 divided by RR. For example, at 12 breaths per minute, TCT is 60/12 = 5 seconds. Inspiration time (Ti) and expiration time (Te) are the actual durations of the inhalation and exhalation phases and sum to the total cycle time, but they’re not the parameter you divide 60 by to get TCT. The I:E ratio describes how Ti and Te relate, not the absolute cycle length.

Total Cycle Time is the time for one complete breath. When you’re given breaths per minute, you can convert to seconds per breath by dividing 60 by the respiratory rate, so the cycle time equals 60 divided by RR. For example, at 12 breaths per minute, TCT is 60/12 = 5 seconds.

Inspiration time (Ti) and expiration time (Te) are the actual durations of the inhalation and exhalation phases and sum to the total cycle time, but they’re not the parameter you divide 60 by to get TCT. The I:E ratio describes how Ti and Te relate, not the absolute cycle length.

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