目的　探讨鼻部因素与阻塞性睡眠呼吸暂停 低通气综合征 (OSAHS)中嗜睡和打鼾症状的相关性。方法　对 2 1例OSAHS合并鼻塞的患者行鼻内镜手术 ,对患者术前、术后嗜睡评分和鼾声做比较。结果　 2 1例多导睡眠监测显示呼吸暂停 低通气指数为 (2 0 .6 3± 1 6 .5 2 )次 /h。术前嗜睡评分为 (7.2 5± 3.4 5 )分 ,术后嗜睡评分为(2 .33± 2 .6 3)分 ,术前、术后嗜睡评分有显著性差异 ,P <0 .0 1 ;术前鼾声分级为 (3.0± 0 .8)级 ,术后鼾声分级为 (1 .38± 0 .86 )级 ,术前、术后鼾声分级有显著性差异 ,P <0 .0 1。结论　嗜睡和打鼾与鼻腔因素有关 ,鼻腔手术可以解除或减轻嗜睡和打鼾症状 Objective To investigate the relationship between nasal factors and sleepiness and snore symptoms in obstructive sleep apnea-hypopnea syndrome (OSAHS). Methods Twenty-one patients with OSAHS complicated with nasal obstruction underwent endoscopic sinus surgery. The preoperative and postoperative drowsiness scores and snoring were compared. Results Twenty-one cases of polysomnography showed apnea-hypopnea index (20.63 ± 16.52) times / h. Preoperative drowsiness score was (7.25 ± 3.4 5) points, postoperative drowsiness score was (2.33 ± 2.63) points, preoperative and postoperative drowsiness scores were significantly different, P <0.01; The grade of preoperative snoring was (3.0 ± 0.8) and the grade of postoperative snoring was (1.38 ± 0.86). The preoperative and postoperative levels of snoring were significantly different (P <0.01). Conclusion Somnolence and snoring are related to the nasal factors, nasal surgery can relieve or reduce the symptoms of lethargy and snoring