呼吸气流平台指数与气道阻力的关系

The Relationship of Breath Flattening Index to the Resistance of Airway

目的研究从鼻导管得到的呼吸气流-时间曲线的平台指数,反映气道阻力的可靠性。方法行整夜多导睡眠监测(polysomnography,PSG)时用鼻导管观察呼吸气流,并用分析软件对气流-时间曲线进行量化、统计后得到平台指数。比较重度阻塞性睡眠呼吸暂停低通气综合征(Obstructive sleep apnea and hyponeasyndrome,PSAHS)组、中度OSAHS驵、轻度OSAHS组、单纯鼾症组、疑上气道阻力综合征组(upper airway resistancesyndronme UARS?)及对照组(无鼾组)的平均平台指数。结果发现各级OSAHS组和UARS?组的各级平台指数明显高于单纯鼾症组和无鼾组。结论从鼻导管得到的呼吸气流-时间曲线的平台指数是反映气道阻力的较敏感参数。

Purpose To study the reliability if breath flattening index to reflect the resistance of upper airway. Methods the breathes of snoring patients receiving whole night PSG were detected by the cannula. The breath flattening indexes came from the flow-time graphs, which were analyzed, quantified and counted by soft ware. The breath flattening indexes of 6groups were divided by comparison: serious OSAHS( Group 1), media OSAHS( group 2), minor OSAHS( Group 3) , primaty snoring(Group 4) ,UARS? (Group 5) ,and no snoring( Group 6) . Results The breath flattening indexes of group 1, 2,3,5 are much higher than those of group 4,6. Conclusion The breath flattening index is one of the susceptible parameter to reflect the resistance of upper airway.