BPAP Titration in Severe OSA

Rationale and Guidelines

The American Academy of Sleep Medicine recommends switching to BPAP when CPAP intolerance occurs despite mask changes and pressure adjustments, or when obstructive events persist at 15 cm H₂O 1, 2.
The American Academy of Sleep Medicine guidelines support BPAP as the next step for patients who fail CPAP titration due to intolerance, even after reducing pressure to 12 cm H₂O 1, 2.

BPAP starting settings should be IPAP 8 cm H₂O and EPAP 4 cm H₂O, with a minimum IPAP-EPAP differential of 4 cm H₂O 3, 4.

Decreasing CPAP below 12 cm H₂O is inappropriate because it would likely result in inadequate treatment of severe OSA, as evidenced by the patient's initial titration demonstrating a need for 14 cm H₂O to achieve adequate control (AHI 2.4/hr) 1, 2.
Maxillomandibular advancement is reserved for severe OSA patients who cannot tolerate or are not appropriate candidates for all other recommended therapies, making BPAP a more suitable option for this patient 5.

The American Academy of Sleep Medicine guidelines emphasize the importance of not prematurely abandoning PAP therapy without attempting BPAP, as this leaves severe OSA with dangerous hypoxemia untreated 1, 2, 5.
Close follow-up after BPAP initiation is crucial, with objective adherence monitoring and side effect management, as recommended by the American Academy of Sleep Medicine 5, 6.