Minute Volume is calculated by which formula?

Minute Volume is calculated by which formula?

• A. RR x Tidal volume
• B. RR + Tidal volume
• C. Tidal volume x MV
• D. RR x Cardiac output

Answer: (A)

Minute volume is the total air moved in or out of the lungs each minute. It depends on two values: the amount of air moved with each breath (tidal volume) and how many breaths occur per minute (respiratory rate). Multiply them: minute volume = tidal volume × respiratory rate. For example, 500 mL per breath at 12 breaths per minute gives about 6,000 mL per minute (≈6 L/min). The other options don’t fit because they combine or alter units incorrectly (adding tidal volume to respiratory rate; multiplying tidal volume by minute volume would reuse the same quantity; or pairing respiratory rate with cardiac output mixes different physiological systems).

Minute volume is the total air moved in or out of the lungs each minute. It depends on two values: the amount of air moved with each breath (tidal volume) and how many breaths occur per minute (respiratory rate). Multiply them: minute volume = tidal volume × respiratory rate. For example, 500 mL per breath at 12 breaths per minute gives about 6,000 mL per minute (≈6 L/min). The other options don’t fit because they combine or alter units incorrectly (adding tidal volume to respiratory rate; multiplying tidal volume by minute volume would reuse the same quantity; or pairing respiratory rate with cardiac output mixes different physiological systems).