【Diagnosis 】
The diagnosis of obstructive pulmonary emphysema, especially in the early diagnosis more difficult, should be history, signs, chest X-ray and pulmonary function tests to determine integrated. Where there is a gradual increase in the history of dyspnea, pulmonary Gong Tests can show the residual gas and RV / TLC, forced expiratory volume in the first second / forced vital capacity reduction, lower forced vital capacity, uneven distribution of gas, to reduce the diffusing capacity; as bronchodilators rule Treatment, no significant improvement in lung function, the diagnosis can be set up.
【Differential diagnosis】
It should be noted with tuberculosis, lung cancer and occupational lung disease in the differential diagnosis. Moreover, chronic bronchitis, bronchial asthma and obstructive pulmonary emphysema and chronic obstructive pulmonary disease are, and chronic support Bronchitis and asthma can be complicated by obstructive pulmonary emphysema. However, only three, and the distinction can not be the same. Chronic bronchitis complicated by emphysema in precancerous lesions confined to the main bronchus, There are obstructive ventilation barriers, but to a lesser extent, the normal diffusing capacity. Bronchial asthma attack for the performance period obstructive pulmonary ventilation barriers and over-inflated, can be severely uneven distribution of gas. However, the above-mentioned Reversible changes in the larger, better response to inhaled bronchodilators. Diffusion dysfunction is not clear. Bronchial asthma and reactive airway significantly increased, lung function day and night are big fluctuations in their haracteristics.
