Which Supplementary Examination the Patients with Chronic Bronchitis Require

(1) X-check: Early can be no anomaly. Recurrent lesions caused bronchial wall thickening, small or bronchial alveolar interstitial infiltration of inflammatory cells or fibrosis, that the two Fei Wenli thickening, disorder, or a mesh of the cable-like, dot-like shadow of the lung field more obvious .
(2) respiratory function tests: no abnormal early. For small airway obstruction, the peak expiratory flow rate - volume curve at 75 percent and 50 percent lung capacity, the flow decreased significantly, than the first forced expiratory volume in one second more sensitive; closed volume increase. To the development of airway obstruction or stenosis, there is obstructive pulmonary ventilation function of performance, such as the first one second forced expiratory accounts to reduce the ratio of forced vital capacity (<70%), the largest decrease ventilation (<80% of the estimated value ); Flow - to reduce the capacity of even more evident.
(3) blood test: acute or chronic bronchitis complicated by lung infection, or that white blood cell count increased neutrophil. Asthmatic who eosinophilia. No change in remission and more.
(4) sputum examination: a smear or culture that streptococcus pneumoniae, Haemophilus influenzae, Streptococcus A, and so on and Neisseria. The Pap smear shows that a large number of neutrophil, the goblet cells have been destroyed, asthmatic, the more common eosinophil.