Which term is commonly used to describe two-level airway pressure modes often referred to as BiPAP?

• A. Bilevel Pressure Support
• B. Bilevel Positive Airway Pressure
• C. Bilevel Continuous Positive Airway Pressure
• D. Bilevel Positive End-Expiratory Pressure

Answer: (A)

Two-level airway pressure modes provide two distinct pressures: a higher pressure during inspiration to help expand the lungs and a lower pressure during expiration to keep the airway open without overdistending it. The term bilevel pressure support is used to describe this setup because it directly conveys the idea of pressure being supplied at two levels to assist breathing, rather than a single continuous pressure. This aligns with how these modes function clinically, using IPAP and EPAP to deliver assist during inhalation while easing during exhalation. The other phrases mix concepts like continuous pressure (which implies one steady level) or PEEP terminology (which is a baseline pressure) and don’t capture the two-level support nature as clearly. In practice, recognizing that ventilation is supplied as two levels of pressure emphasizes how the device aids both inhalation and exhalation rather than maintaining a single constant pressure.