
Keywords: فشار مثبت انتهای بیحسی مثبت ذاتی; artificial respiration; assisted ventilation; COPD; dynamic hyperinflation; ventilator waveform analysis; EELV; end-expiratory lung volume; EFL; expiratory flow limitation; EFLT; tidal expiratory flow limitation; NIV; noninvasive ventilation; PEEP; positi