支气管哮喘的实验诊断方法及其评价（Experimental diagnosis and evaluation of bronchial asthma）.doc

支气管哮喘的实验诊断方法及其评价（Experimental diagnosis and evaluation of bronchial asthma） Experimental diagnosis and evaluation of bronchial asthma Source: medical paper, /lunwen4455/ [keyword] bronchial asthma In recent years, with the accelerated process of industrialization, increased air pollution, caused by the change of human pulmonary function, airway reactivity, immune system, increased bronchial asthma (hereinafter referred to as asthma) patients with sensitivity to antigen, increased the incidence of asthma and the symptoms are not typical. At present, there are more than one million people with asthma in the world. The incidence of asthma is extremely complex, allergens, in the external environment control tracheal smooth muscle nerve? Receptor imbalance between cellular and humoral, immune dysfunction and genetic factors are involved in the pathogenesis of asthma in recent years, the new theory of airway inflammation has been accepted by all of us. . This is the diagnosis and differential diagnosis, in addition to its clinical manifestations, but also depends on laboratory examination, understanding of respiratory reactivity and changes in lung function. The diagnosis of asthma has some reliable index. Therefore, a series of clinical examinations are the most effective methods for the diagnosis and differential diagnosis of asthma. Asthma is a chronic inflammatory disease of the respiratory tract, involving a variety of cells (such as eosinophils, mast cells, lymphocytes, neutrophils and respiratory epithelial cells) and cell components. This inflammation causes airway hyperreactivity, and recurrent episodes of wheezing, shortness of breath, chest tightness or cough and other symptoms. It often occurs at night and (or) early morning, and has a wide variety of reversible airflow limitation. After exposure to antigens in allergic individuals, IgE cells are produced by B cells, which are attached to mast cells. When contacting the antigen, calcium into cells to release h