Cough Reflex Test (CRT) Practice

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What is the normal range for minute volume (VE)?

3-5 L/min

5-7 L/min

The normal range for minute volume (VE) is considered to be between 5-7 L/min. Minute volume refers to the total volume of air that is inhaled or exhaled from a person's lungs in one minute and is a key indicator of respiratory function.

At rest, a healthy adult typically has a minute volume around 6 L/min, which is derived from an average tidal volume of about 500 mL per breath and a respiratory rate of approximately 12 breaths per minute. This range ensures that adequate oxygen is delivered to the lungs and carbon dioxide is expelled from the body efficiently, reflecting normal pulmonary and cardiovascular function.

Values outside the 5-7 L/min range can indicate various respiratory conditions or inadequate ventilation, making it an important parameter in assessing respiratory health.

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7-10 L/min

10-12 L/min

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