Oronasal masks require higher levels of positive airway pressure than nasal masks to treat obstructive sleep apnea

摘要

Purpose The purpose of this study was to compare the therapeutic pressure determined by an automated CPAP device (AutoCPAP) during the titration period, between nasal and oronasal mask and the residual apnea-hypopnea index (AHI) on a subsequent poligraphy performed with the established therapeutic CPAP.Methods As a retrospective study, 109 subjects with moderate and severe obstructive sleep apnea-hypopnea (apnea-hypopnea index> 15 events/h) were studied. CPAP titration was performed using an auto-titrating device.Results There was significant difference in the mean pressure delivered with autoCPAP between the group of patients using the nasal mask (mean 10.0 cmH2O+-2.0 SD) and the group