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目的：观察老年人群中睡眠呼吸暂停综合征(SAS)的临床特点。方法：随机选择SAS确诊患者300例，分为中青年组与老年组，分析对比相关睡眠呼吸暂停综合征诊断指标。结果：中青年组与老年组的体重指数以及颈围两项指标中，中青年组高于老年组，有显著性差异。微觉醒指数以及呼吸暂停低通气指数老年组低于中青年组，平均S a02以及最低S a02指标中老年组较高，有显著性差异。中青年组3、4期睡眠较老年组多，有显著性差异。轻中度S A S老年组较中青年组略高，混合性与中枢性SAS较中青年组更多，存在显著性差异。在分别与BMI和颈围匹配之后，老年组中呼吸暂停低通气指数(Am)与年龄之间呈现负相关的关系，呼吸暂停低通气指数与BMI、呼吸暂停低通气指数与颈围均呈正相关。结论：分别匹配BMI以及颈围之后，老年组的SAS严重程度比中青年组轻，在老年组中混合性与中枢性SAS发生率更多。“,” Objective: To research the clinical characteristics of elderly sleep apnea syndrome(SAS).Methods: 300 SAS patients were selected randomly and classified into middle aged and aged groups according to their age.Analysis the diagnosis indox. Results: Both the body mass index(BMI)and neck circumference in middle aged group were significantly higher.The microarousal index(MAI) and apnea/hypopnea index(AHI) in the aged group were both significantly lower, however, in the aged group the minimum oxygen saturation(Sa02)and average Sa02 were markedly higher.In the middle aged group, theⅢ-Ⅳ sleep period was much more.In the aged group, the mild to moderate SAS was little more as wel as the central and mixed SAS(P<0.05).Matched with BMI and neck circumference,in the aged group age was negatively correlated to AHI,AHI was positively correlated to BMI as wel as to neck circumference. Conclusion: In the aged group, SAS patients were less severe matched with BMI and neck circumference, the incidence of central and mixed SAS were much more.