Patients with primary obstructive sleep apnea, who develop complex sleep apnea after CPAP treatment of 4-6 weeks duration were randomized to either receive Bilevel of Servoventilation treatment. Parameters of sleep as well as apnea-hypopnea indices are to be compared.
Randomized trial to evaluate the performance of Bilevel vs. Servoventilation in patients with complex sleep apnea during continuous positive airway pressure (CPAP) treatment.