CPAP-induced sphenoid sinus pressures after endoscopic sinus surgery

Area of Science:

• Otolaryngology
• Neurosurgery
• Respiratory Medicine

Background:

• Continuous positive airway pressure (CPAP) is vital for treating sleep apnea.
• Restarting CPAP post-sinus or skull base surgery is debated due to pressure concerns.
• Previous studies lacked live subject data on CPAP pressure transmission.

Purpose of the Study:

• To quantify CPAP pressure transmission to the post-surgical sphenoid sinus and mid-nasal cavity.
• To investigate the impact of early post-operative factors on CPAP pressure delivery.

Main Methods:

• Utilized live subjects in the early post-operative period.
• Measured delivered CPAP pressure.
• Assessed pressure at the sphenoid sinus and mid-nasal cavity.

Main Results:

• Approximately 32.76% of delivered CPAP pressure reached the sphenoid sinus.
• Around 13.52% of delivered CPAP pressure reached the mid-nasal cavity.
• Significant pressure reduction was observed compared to delivered CPAP.

Conclusions:

• Post-operative nasal conditions (edema, packing, blood, secretions) attenuate CPAP pressure.
• Findings suggest CPAP may be safely initiated earlier post-operatively.
• Further research is warranted to establish optimal CPAP protocols after sinonasal and skull base surgery.