Which ventilatory parameter directly determines minute ventilation along with tidal volume?
Answer and explanation
Correct answer: C. Respiratory rate
Answer: Respiratory rate.
Why not the others: Positive end-expiratory pressure maintains alveolar patency at end-expiration but is not a multiplier for minute ventilation; Inspiratory-to-expiratory ratio affects gas distribution timing; Peak flow determines the speed of gas delivery during inspiration rather than total minute volume.
Why not the others: Positive end-expiratory pressure maintains alveolar patency at end-expiration but is not a multiplier for minute ventilation; Inspiratory-to-expiratory ratio affects gas distribution timing; Peak flow determines the speed of gas delivery during inspiration rather than total minute volume.
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