Asthma is a respiratory system disease caused by bronchial diseases. Due to the difficulty in curing asthma, many people are worried about it happening to themselves when they have a cold or cough that cannot be cured for a long time. Most asthma is caused by coughing in the respiratory system during normal times, as many people do not pay attention to treatment, which can lead to the spread of asthma. So, what tests should be done to suspect asthma?
What tests should be done to suspect asthma
1. Blood gas analysis: Severe asthma attacks may result in hypoxia, decreased PaO2 and SaO2. Overventilation can cause a decrease in PaO2 and an increase in pH, leading to respiratory alkalosis.
2. Chest X-ray examination: In the early stages of asthma attacks, an increase in lung transparency can be seen, showing an overinflated state, and there are usually no obvious abnormalities during the remission period.
3. Specific allergen detection: Radioallergen adsorption test (Rast) can be used to determine specific IgE, and serum IgE levels in allergic asthma patients can be 2-6 times higher than those in normal individuals.
4. Blood routine examination: During the attack, there may be an increase in eosinophils, but most of them are not significant. If there is concurrent infection, there may be an increase in white blood cell count and an increase in the proportion of classified neutrophils.
5. Sputum examination: Under the microscope, there are more eosinophils visible in the smear. If there is a concurrent respiratory bacterial infection, Gram staining, cell culture, and drug sensitivity testing of the sputum smear can help diagnose the pathogen and guide treatment.
6. Pulmonary function test: During the remission period, most of the lung ventilation function is within the normal range. During an asthma attack, due to limited expiratory flow rate, there is a decrease in forced expiratory volume in the first second (FEV1), one second rate (FEV1/FVC%), maximum mid expiratory flow rate (MMER), maximum expiratory flow rate at 50% and 75% lung capacity (MEF50% and MEF75%), and peak expiratory flow rate (PEFR).
Symptoms of early morning asthma
1. In the case of ordinary cough variant asthma, it belongs to allergic cough, mainly dry cough, and generally does not have obvious asthma symptoms. Ordinary anti-inflammatory or cough suppressant drugs have little effect.
2. It is necessary to use anti allergic drugs, as well as steroid drugs that can be nebulized or orally administered to improve symptoms.
3. If coughing persists for a long time or produces lung sounds, it is necessary to go to the hospital for examination as soon as possible to avoid delaying the condition and worsening it.
Many stubborn diseases are caused by carelessness in daily life. These diseases may have mild symptoms in the early stages, but if people do not seek timely treatment, they can worsen or spread, becoming chronic illnesses that cannot be cured for a long time. So, it is very necessary to develop good daily habits, increase exercise, and enhance the body's immunity in daily life.
