If PAP therapy is prescribed, a follow-up titration polysomnography is performed to determine the optimal settings for use of the PAP device. Initially the physician estimates the correct pressure settings for the PAP device based on results of the diagnostic polysomnography. Then during the second study, the technician adjusts the airway pressure higher or lower from the prescribed setting to find the optimal pressure at which the obstructive apneas and/or hypopneas, oxyhemoglobin desaturation, respiratory effort–related arousals, and snoring in all sleep stages are eliminated.
Positive airway pressure (PAP) therapy is the frontline treatment for obstructive sleep apnea. This form of therapy requires that the patient use the PAP device while sleeping on a regular basis. For patients prescribed PAP therapy, Sleep Centers of Texas provides the various PAP devices and related accessories and supplies such as masks, hoses, and filters at its sleep clinic in San Antonio. In addition to the initial equipment, Sleep Centers of Texas also provides on an ongoing basis the replacement supplies needed for long-term use of the PAP device.