Short daytime ApneaGraph for initial case selection of obstructive sleep apnea–hypopnea syndrome before surgery
- نوع فایل : کتاب
- زبان : انگلیسی
- مؤلف : Rong Yu Wuyi Li Hong Huo Ping Shen Xu Tian
- چاپ و سال / کشور: 2011
Description
The aim of this study was to determine whether the 2-h daytime ApneaGraph (dAG) for patients with obstructive sleep apnea–hypopnea syndrome (OSAHS) can be used initially to diagnose and identify the site of obstruction before surgery. Fifty patients with OSAHS diagnosed by polysomnogram were enrolled in this prospective study. Sleep-related parameters, which include the indices for apnea–hypopnea (AHI), apnea index (AI), obstructive, central and mixed AHI (OAHI, CAHI and MAHI, respectively), the lowest oxygen saturation (LSaO2) and the proportion of upper and lower airway obstruction (UPPER and LOWER, respectively), were measured by both daytime and nocturnal AG (nAG). Different operative techniques were used according to the obstruction site assessed by the nAG. Clinical outcomes were assessed with the Epworth Sleepiness Scale (ESS), visual analog scale (VAS), AI, AHI and LSaO2. All the indices except LSaO2 found no significant differences between dAG and nAG; there were significant positive correlations with regard to most indices, but not for CAHI between dAG and nAG. When compared dAG with nAG, most moderate and severe patients had predominant sites of obstructions in the upper level. Postoperative ESS, VAS, AI and AHI decreased significantly, while LSaO2 significantly increased compared with those preoperative counterparts. dAG may be used as an alternative means for early and low-cost diagnostic evaluation of OSAHS before surgery.
Eur Arch Otorhinolaryngol,Received: 4 October 2010 / Accepted: 3 March 2011 Springer-Verlag 2011
