폐쇄성 수면무호흡증과 상기도저항증후군의 임상적 특징 비교

Abstract

Background and Objectives：Most of the patients with upper airway resistance syndrome (UARS) remain undiagnosed and areleft untreated because of the disagreement with diagnostic criteria of obstructive sleep apnea syndrome (OSAS). The aim of thisstudy is to help understanding UARS through evaluating differences of polysomnographic findings and subjective symptoms betweenUARS and OSAS. Subjects and Method：One hundred nineteen patients, who visited for snoring and/or apnea, excessivedaytime sleepiness, were included. All patients underwent full night polysomnography (PSG) and performed tests on the 10cm visual analogue scale (VAS) for 14 symptoms and Epworth sleepiness scale (ESS). PSG results and VAS score were comparedbetween UARS group and OSAS group. Results：Among 119 patients, 4 patients had simple snoring, 19 patients had UARS and96 patients had OSAS. Patients with UARS were younger and had lower BMI than OSAS. Apnea index, hypopnea index, respiratorydisturbance index, arousal index, portion of slow wave sleep, mean and lowest oxygen saturation were more severe in patientswith OSAS than UARS. But subjective symptoms and ESS were similar in both groups. Conclusion：Although significantdifferences were found in PSG results in patients with UARS and OSAS, complaints and symptoms were similar in both groups. Wesuggest that diagnosis and treatment for sleep-disordered breathing should not be based solely upon the presence of apnea/hypopnea.We also suggest that more consideration should be given to UARS diagnosis and treatment. (Korean J Otolaryngol 2006;49:908-11)