Diagnosis of bronchial asthma which checks should be done

For patients with asthma usually do the inspection the following areas:
(1) eosinophil counts: the majority of allergic rhinitis and asthma in children with blood eosinophil count of more than 300 10  6 / L. Sputum can also be found in the number of eosinophils and Charcot's crystallization.
(2) blood: red blood cells, hemoglobin, total leukocyte and neutrophil generally normal, but after the application of receptor stimulants can increase the total number of leukocytes.
(3) chest X-ray examination: most of the normal remission period, the majority of the attack was simply sick child can be accompanied by excessive inflation or increase in hilar vascular shadow; have co-infection, the pulmonary infiltration can occur, when there are other complications may have different signs.
(4) skin test: When considering the possibility of asthma diagnosis, there are special diagnostic heterogeneity may increase the weight of skin test can also be used to support and strengthen the advice of the patient, for example, advise patients to remove from the living room of the domesticated animals, to consider allergic, skin test is necessary.
(5) blood gas analysis: an asthma attack, if the lack of oxygen, can reduce the partial pressure of oxygen, but carbon dioxide partial pressure in the mild and moderate asthma, due to hyperventilation, decreased partial pressure of oxygen can, pH values have increased, that the respiratory alkalosis. For retention of carbon dioxide, carbon dioxide partial pressure increased, respiratory acidosis.
(6) pulmonary function tests: general, including lung volume, pulmonary ventilation, diffusing capacity, flow rate capacity  test plans and respiratory mechanics, pulmonary function tests to estimate the severity of asthma and determine the effect of significance.