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目的 同时采用热敏传感器和二氧化碳浓度测量仪监测睡眠呼吸暂停综合征 (SAS)患者 ,探讨二氧化碳浓度测量法在诊断SAS中的临床价值。方法 对 2 5例患者进行多导睡眠图和呼出气二氧化碳浓度描记图及呼气末二氧化碳分压 (PetCO2 )监测 ,并对PetCO2 值与呼吸紊乱指数 (AHI)的关系进行分析 ,统计方法采用t检验和相关分析。结果 以热敏传感器所得结果为标准 ,呼吸暂停、低通气和呼吸紊乱阳性诊断率分别为 84.5 %± 9.6 % ,72 .7%± 8.0 % ,81.2 %± 8.4% ;未发现假阳性。夜间平均PetCO2 和最高PetCO2 与窒息指数 (AI)、低通气指数(HI)、AHI均无显著相关性。结论 二氧化碳浓度测量法监测SAS具有较高的诊断率。
Objective To monitor sleep apnea syndrome (SAS) patients by using thermosensitive sensors and carbon dioxide concentration measuring instruments, and to explore the clinical value of carbon dioxide concentration measurement in the diagnosis of SAS. Methods Twenty-five patients underwent polysomnography and exhaled carbon dioxide concentration profiling and end-tidal carbon dioxide partial pressure (PetCO2) monitoring. The relationship between PetCO2 and respiratory distress index (AHI) was analyzed. The statistical method was t Test and correlation analysis. Results Based on the results of the thermosensor, the positive diagnostic rates of apnea, hypopnea and respiratory disorders were 84.5% ± 9.6%, 72.7% ± 8.0% and 81.2% ± 8.4% respectively. No false positives were found. Night average PetCO2 and maximum PetCO2 and asphyxia index (AI), low airway index (HI), AHI no significant correlation. Conclusion The carbon dioxide concentration measurement method monitors SAS with high diagnostic rate.