呼出气一氧化氮联合脉冲振荡检查在学龄前儿童哮喘中的诊断价值研究

目的探讨呼出气一氧化氮(fractional exhaled nitric oxide, FeNO)联合脉冲振荡(impulse oscillometry,IOS)肺功能检查对学龄前儿童哮喘的诊断价值,并建立最佳预测模型。方法 回顾性纳入2019年9月至2020年12月收治的3～5岁喘息儿童156例,分为哮喘组(52例)和非哮喘组(104例)。对2组患儿的IOS参数、FeNO及临床资料进行分析比较,通过多因素logistic回归建立最佳预测模型。结果 哮喘组频率5 Hz时呼吸系统总阻抗(respiratory system impedance at 5 Hz,Z5)、频率5 Hz和20 Hz时阻抗(resistance of respiratory system at 5 Hz and 20 Hz,R5和R20)、共振频率、电抗面积(reactance of area,AX)和FeNO水平均高于非哮喘组,频率5 Hz时电抗差值小于非哮喘组(P<0.05)。受试者工作特征曲线分析显示Z5、R5、R20和FeNO对哮喘诊断有价值(P<0.05)。多因素logistic回归分析建...

Value of fractional exhaled nitric oxide combined with impulse oscillometry in the diagnosis of asthma in preschool children

Objective To evaluate the value of fractional exhaled nitric oxide (FeNO) combined with impulse oscillometry (IOS) in the diagnosis of asthma in preschool children, and to establish the optimal predictive model. Methods A retrospective analysis was performed on 156 children with wheezing, aged 3-5 years, who were admitted from September 2019 to December 2020. These children were divided into an asthma group with 52 children and a non-asthma group with 104 children. The two groups were compared in terms of IOS parameters, FeNO, and clinical data. The multivariate logistic regression analysis was used to establish the optimal predictive model. Results Compared with the non-asthma group, the asthma group had significantly higher total respiratory system impedance at 5 Hz (Z5), resistance of respiratory system at 5 Hz and 20 Hz (R5 and R20, respectively), resonance frequency, reactance area (AX), and FeNO and a significantly lower reactance difference at 5 Hz (P<0.05). The receiver operating characteristic (ROC) curve analysis showed that Z5, R5, R20, and FeNO had a certain value in the diagnosis of asthma (P<0.05). The multivariate logistic regression analysis established the optimal predictive model of R20+AX+FeNO, with an area under the ROC curve of 0.858 (P<0.05), a sensitivity of 78.8%, and a specificity of 76.9%. Conclusions FeNO combined with IOS is helpful for the diagnosis of asthma in preschool children, and the model of R20+AX+FeNO has a certain value in the diagnosis of asthma in these children. Citation:Chinese Journal of Contemporary Pediatrics, 2022, 24(9): 1020-1026