A Patient Has Been Using Continuous Positive Airway Pressure (CPAP),and

Multiple Choice

A patient has been using continuous positive airway pressure (CPAP) ,and now the health care provider is recommending bi-level positive airway pressure (BiPAP) .The patient is asking the nurse to explain the difference again.Which response is appropriate?

A) "CPAP maintains a set positive airway pressure during inspiration only."
B) "CPAP opens the airways during inspiration and allows them to close during expiration."
C) "BiPAP maintains a set pressure that is the same for inspiration and expiration."
D) "BiPAP delivers sufficient expiratory pressure to keep the airways open."