Which expression correctly defines minute volume when the numbers are given in milliliters and breaths per minute?

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Multiple Choice

Which expression correctly defines minute volume when the numbers are given in milliliters and breaths per minute?

Explanation:
Minute volume is the total amount of air moved in or out per minute, so it depends on how much air is moved with each breath (tidal volume) and how many breaths occur each minute (respiratory rate). With tidal volume in milliliters and respiratory rate in breaths per minute, minute volume is calculated as tidal volume × respiratory rate, giving milliliters per minute. The other expressions don’t fit because adding volumes or dividing them doesn’t produce a valid ventilation rate in mL per minute, and inspiratory time relates to the duration of each breath, not the total air moved per minute.

Minute volume is the total amount of air moved in or out per minute, so it depends on how much air is moved with each breath (tidal volume) and how many breaths occur each minute (respiratory rate). With tidal volume in milliliters and respiratory rate in breaths per minute, minute volume is calculated as tidal volume × respiratory rate, giving milliliters per minute. The other expressions don’t fit because adding volumes or dividing them doesn’t produce a valid ventilation rate in mL per minute, and inspiratory time relates to the duration of each breath, not the total air moved per minute.

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