Methods Negativeexpiratorypressure technique was performed in 13 special COPD patients who did not accomplish routine pulmonary function tests.
方法采用呼气负压技术检测13例不能完成常规肺功能检查的COPD患者呼气流速受限。
2
Objective to detect the expiratory flow limitation (EFL) with a new simple technique, expiratorynegativepressure technique (NEP) in patients with chronic obstructive pulmonary disease (COPD).