Impulse oscillometry (IOS) is important in diagnosing respiratory functions in non-cooperative children. Studies are rising nowadays to establish reliable reference values of IOS for children of different ethnicities. No available data about the regression equations for parameters of IOS for Egyptian children and adolescents. So, our study aimed to develop regression equations for parameters of IOS in Egyptian children and adolescents in relation to their age, weight, height, and body mass index. Height and age affected the regression equation of impedance at 5 Hz (Z5 Hz) and resistance at 5 Hz (R5 Hz) in both males and females, resistance at 20 Hz (R20 Hz) in males and reactance at 5 Hz (X5 Hz) in females. Height affected the regression equation of R20 Hz in females, resonant frequency (Fres) in males, and the area of reactance (AX) in both males and females. While age affected the equation of X5 Hz in males and Fres in males. Height and age were the most predictive values affecting the regression equation of IOS in Egyptian children and adolescents.

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埃及儿童和青少年脉冲示波法参数的参考方程式

脉冲示波法（IOS）在非合作儿童的呼吸功能诊断中很重要。如今，越来越多的研究为不同种族的儿童建立可靠的IOS参考值。没有有关埃及儿童和青少年的IOS参数回归方程的可用数据。因此，我们的研究旨在针对埃及儿童和青少年的年龄，体重，身高和体重指数建立IOS参数的回归方程。身高和年龄影响男性和女性的5 Hz（Z5 Hz）阻抗和5 Hz（R5 Hz）的阻抗，男性20 Hz（R20 Hz）的阻抗和5 Hz（X5 Hz）的电抗的回归方程在女性中。身高影响女性的R20 Hz回归方程，男性的共振频率（Fres），以及男性和女性的电抗面积（AX）。年龄影响男性的X5 Hz方程和男性的Fres方程。身高和年龄是影响埃及儿童和青少年IOS回归方程的最预测值。