The purpose of an intentional leak is to:

The purpose of an intentional leak is to:

• A. Wash out CO2 and prevent rebreathing
• B. Apply adequate pressure to minimize snoring
• C. Provide negative inspiratory airway pressure
• D. Reduce pressure at the beginning of exhalation

Answer: (A)

An intentional leak in a noninvasive ventilation setup provides a controlled path for exhaled gas to escape, creating a wash-out of exhaled CO2 so the patient does not rebreathe it. This keeps the inhaled air fresh and maintains effective ventilation, which is especially important at higher pressures or with a snug mask. The other statements don’t describe why a leak is built in: it isn’t meant to apply snoring-reducing pressure, it doesn’t generate negative inspiratory pressure, and it isn’t intended to reduce pressure at the start of exhalation.

An intentional leak in a noninvasive ventilation setup provides a controlled path for exhaled gas to escape, creating a wash-out of exhaled CO2 so the patient does not rebreathe it. This keeps the inhaled air fresh and maintains effective ventilation, which is especially important at higher pressures or with a snug mask. The other statements don’t describe why a leak is built in: it isn’t meant to apply snoring-reducing pressure, it doesn’t generate negative inspiratory pressure, and it isn’t intended to reduce pressure at the start of exhalation.