What is the average tidal volume for an adult?

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Multiple Choice

What is the average tidal volume for an adult?

Explanation:
Tidal volume is the amount of air moved in or out with a normal breath. In an average adult, it’s about 7 ml per kilogram of body weight. For a typical 70 kg person, that’s roughly 490 ml, usually rounded to about 500 ml, with a common resting range around 400–600 ml. Therefore, the range 500–600 ml best represents the average tidal volume for an adult. The smaller ranges underestimate a typical quiet breath, while the larger ranges exceed the usual resting value for most adults (unless the person is larger or engaged in heavy breathing). This value forms the basis for calculating minute ventilation when combined with respiratory rate.

Tidal volume is the amount of air moved in or out with a normal breath. In an average adult, it’s about 7 ml per kilogram of body weight. For a typical 70 kg person, that’s roughly 490 ml, usually rounded to about 500 ml, with a common resting range around 400–600 ml. Therefore, the range 500–600 ml best represents the average tidal volume for an adult. The smaller ranges underestimate a typical quiet breath, while the larger ranges exceed the usual resting value for most adults (unless the person is larger or engaged in heavy breathing). This value forms the basis for calculating minute ventilation when combined with respiratory rate.

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