Most patients with sleep apnea can be successfully treated with CPAP. In some cases, your doctor may prescribe BPAP instead of CPAP for obstructive sleep apnea. BPAP (pronounced "B-PAP") or BiPAP is short for bilevel positive airway pressure. The function of the BPAP machine is the same as CPAP; however, it provides two different levels of pressure. The machine provides a higher pressure when you are breathing in and a lower pressure when you are breathing out. This mimics normal breathing and may be more comfortable for some people.
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