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Staging of bronchial asthma and severity rating:
According to clinical manifestations of bronchial asthma can be divided into acute phase and remission. Acute asthma attack period is defined as 4 weeks there between the onset of symptoms of asthma. Remission after treatment or at the end means after treatment symptoms and signs disappeared, lung function recovered to the level before acute exacerbation and to maintain more than 4 weeks.
The evaluation of the situation of bronchial asthma: evaluation of patients with asthma should be divided into two parts:
1. Non-acute exacerbation of the disease overall assessment: Many patients with asthma even if the treatment was not acute, but in quite a long period of time is always a different frequency and (or) different degrees of symptoms (wheezing, coughing, chest tightness), so require treatment some time ago based on the onset of the frequency, severity, need to use drugs and pulmonary function of an overall valuation of their illness (see extended reading).
2. Acute asthma attack severity assessment: acute asthma attack is shortness of breath, coughing, chest tightness and other symptoms occur suddenly or increase, often breathing difficulties and wheezing, accompanied by reduced expiratory flow. Severity of the disease and make a correct assessment is to give timely and effective treatment basis. Understanding of severe asthma is to avoid asthma caused by the death of a key.
Because the clinical manifestations of asthma is not asthma-specific, so also in the establishment of the diagnosis requires excluding other diseases caused by breathing, chest tightness and cough.
1, cardiac asthma, cardiogenic asthma is common in left ventricular heart failure, and asthma attack symptoms similar, but more than cardiogenic asthma, hypertension, coronary atherosclerotic heart disease, rheumatic heart disease and mitral stenosis, etc. medical history and symptoms. Intermittent cough, cough often pink bubble sputum, lungs blisters on a wide range of tones can be heard wheezing sound, left ventricular community to expand, heart rate increased quickly, the apex can be heard gallop. When the chest X-ray examination shows that cardiac enlargement, pulmonary congestion syndrome, heart, B-and cardiac function tests help to identify. If a time can be difficult to identify selective β2 agonist inhalation or injection of small dose of aminophylline to relieve symptoms, after further examination, Jiyong epinephrine or morphine in order to avoid danger.
Second, central type of lung cancer caused lung cancer or bronchial stenosis with infection, or carcinoid syndrome, may appear similar to asthma-like wheezing or difficulty breathing, chest, and wheezing sound can be heard. However, lung cancer, breathing difficulties and wheezing symptoms of increased, often without incentives, cough may have blood sputum, sputum can be found in cancer cells and chest X-ray, CT or MRI examination or fiberoptic bronchoscopy can often confirm the diagnosis.
3, trachea tracheal tumor endometrial lesions, endometrial diseases such as tuberculosis, and foreign body, causing airway obstruction, it can cause similar symptoms and signs of asthma. Through awareness-raising, time to do pulmonary flow - volume curve, tracheal tomography X-ray films or fibers, bronchoscopy, usually able to confirm the diagnosis.
Fourth, allergic pulmonary infiltration seen in tropical hypereosinophilic syndrome, pulmonary eosinophilia infiltration, multi-borne allergic alveolitis Yandeng. Causes for the parasites, protozoa, pollen, chemicals, occupational dust, and many more in touch with history, symptoms of light, may have fever and other systemic symptoms, chest X ray examination showed multiple, one after another piece of the weak spot infiltration shadow may go away or re-issued. Also help to identify lung tissue biopsy.

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