This study is done at the lab and measures the same parameters as the polysomnogram with the addition of pap treatment. A continuous positive airway pressure (cpap) machine is typically used once the pressure has been determined.
If you have difficulty tolerating the cpap pressure you may qualify for a bi-level machine. A bi-level machine has an inspiratory pressure and an expiratory pressure. This alternating pressure may allow more comfort in efforts to achieve compliance.