Objective To discuss the differences of clinical features and characteristics and features of polysomnography be‐tween elderly patients and middle‐aged patients with obstructive sleep apnea hypopnea syndrome (OSAHS) ,so as to provide refer‐ence for the diagnosis and individualized intervention of elderly OSAHS .Methods Totally 81 aged OSAHS cases and 123 youth OSAHS cases were analyzed in terms of general condition ,clinical manifestations and polysomnographic characteristics ,and the clin‐ical manifestations and polysomnographic difference indicators of the two groups were matched according to body mass index (BMI) .Results Most OSAHS patients were males in both groups ,with BMI and neck waist circumference in the aged group less than those in the middle‐aged group ,and the difference was statistically significant (P<0 .05) ,while the bust was larger than that in the middle‐aged group ,but the difference was not statistically significant (P>0 .05);clinical symptoms of senile groups such as drowsiness ,snoring ,morning headaches ,dry mouth and nighttime awakenings were lower than the middle‐aged group ,the difference was statistically significant (P<0 .05) ,and complications such as hypertension ,diabetes and other risk disease were significantly higher than those in the middle‐aged group ,and the difference was statistically significant (P<0 .05);in the aged group ,the degree of OSAHS was dominated by mild to moderate ,while the middle‐aged group ,was dominated by moderate to severe ,but the differ‐ence was not statistically significant (P>0 .05);REM AHI was more than the middle‐aged group ,the difference was statistically significant (P< 0 .05) ,AHI was less in old age group than in the middle‐aged group ,the difference was statistically significant (P<0 .05);NREMⅠ + Ⅱ stage in the aged group was more than that in the middle‐aged group(P<0 .05) ,and NREM Ⅲ + Ⅳstage ,REM period ,the average SaO2 (% ) ,MAI clear were less than those in the young group;LSAT (% ) was greater than that in the middle‐aged group ,but the difference was not statistically significant (P>0 .05) .Conclusion The incidence of typical clinical manifestations of aged OSAHS patients was lower than that in the middle‐aged group ,but high blood pressure ,diabetes and other complications prevalence were significantly higher than those in the middle‐aged group ,with similar severity of OSAHS in both groups ,there were differences PSG monitoring results with the middle‐aged group ,and the difference of REM AHI was significant .%目的：探讨老年阻塞性睡眠呼吸暂停低通气综合征（OSAHS）与中年OSAHS临床特点和多导睡眠监测特征的差异，为诊断及个体化干预老年OSA HS提供参考依据。方法分析81例老年OSA HS和123例中年OSA HS的一般情况、临床表现和多导睡眠图特点，并按BM I匹配比较两组临床表现及多导睡眠指标差异。结果老年及中年OSA HS患者均以男性居多，老年组BMI及颈腹围均小于中年组（P＜0．05），而胸围大于中年组（P＞0．05）。老年组的临床症状如嗜睡、打鼾、晨起头痛、口干及夜间憋醒发生率均低于中年组，差异具有统计学意义（P＜0．05），而并发症如高血压、糖尿病等患病率明显高于中年组，差异具有统计学意义（P＜0．05）。老年组OSAHS患病程度主要分布于轻中度，中年组主要分布于中重度，但差异无统计学意义（P＞0．05）。REM期AHI老年组大于中年组（P＜0．05），AHI低于中年组（P＜0．05）；NREM Ⅰ＋Ⅱ期大于中年组，差异有统计学意义（P＜0．05）；而NREM Ⅲ＋Ⅳ期、REM期、平均SaO2（％）、MAI小于中年组，LSAT（％）大于中年组，但差异均无统计学意义（P＞0．05）。结论老年OSAHS患者典型临床表现的发生率低于中年组，然而高血压、糖尿病等并发症患病率明显高于中年组，二者OSAHS严重程度相近，PSG监测结果与中年组存在差异，且REM期AHI与中年组差异明显。
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