Comparison between clinical correlation factors and polysomnogram in obstructive sleep apnea-hypopnea syndrome

AIM: To provide more evidence for clinical diagnosis of obstructive sleep apnea-hypopnea syndrome(OSAHS) by comparing clinical correlation factors and polysomnogram(PSG) results.METHODS: Totally 665 patients of suspected OSAHS were analyzed in a retrospective study.Clinical correlation factors,Epworth Scale and all-night 8-hour polysomnography(PSG) recording were compared.RESULTS: Patients were divided into 3 groups according to polysomnogram results,wherein 11.73% were normal,26.02% had mild OSAHS,18.04% had moderate OSAHS and 44.21% had severe OSAHS.For the evaluation of OSAHS degree,significant difference was found only in two clinical symptoms: insomnia and excessive daytime sleepiness(EDS)(P0.05).For the ranking of OSAHS,significant difference was observed in Epworth sleeping scale and body mass index(BMI).CONCLUSION: Good overall evaluation of OSAHS requires combination of clinical symptoms and correlation factors,such as Epworth sleeping scale,BMI and neck collar in OSAHS patients.