
Keywords: کورتیکواستروئیدهای استنشاقی; COPD; chronic obstructive pulmonary disease; PFT; pulmonary function test; FOT; forced oscillation technique; Zrs; respiratory impedance; Xrs; respiratory reactance; Rrs; respiratory resistance; FEV1; forced expiratory volume in 1Â s; 3D; 3-dimensional; R