潮气量大小对气道阻力测定影响的实验研究

摘要

目的 探讨是否严格按照质控标准操作对气道阻力(Raw)检查结果的影响.方法 采用Elite/DXTM体积描记仪对60例受检者分别以方法一(浅快呼吸,频率90次/min左右,较小潮气量)和方法二(深快呼吸,频率90次/min 左右,较大潮气量)进行常规Raw测定.结果 用方法二测定的Raw数值比用方法一测定的大,两种方法结果差异有高度统计学意义(P<0.01).结论 做好检查前的准备工作,严格控制质量标准,以较小潮气量的浅快呼吸法测定Raw,对于结果的准确性,以及对于患者病情的判断据有重要意义.%Objective To investigate the effect on the airway resistance (Raw) test result by whether operating In strict quality control standards. Methods 60 eases of routine Raw determination in method 1 (shallow fast breathing, frequency of about 90 beats/min, small tidal volume) and methods 2 (deep fast breathing, frequency of about 90 beats/min, large tidal volume) by Elite/DXTM plethysmograph were selected. Results The values of Raw detected by method 2 were larger than by method 1, the difference of the results of two methods was statistically significant (P ＜ 0.01). Conclusion Good preparation before Inspection, strict quality standards and by the method of small tidal volume and shallow breathing have Important meaning for the accuracy of the results and the judgment of the patient's condition.