1 cough is how to form?Cough is a reflex defensive action, through coughing can clear the respiratory secretions and foreign body in the air
1 cough is how to form?
Cough is a reflex defensive action, through coughing can clear the respiratory secretions and foreign body in the airway, but frequent severe cough on the patient's work, life and social activities have a serious impact. Cough is caused by irritation of the center of the medulla. From the ear, nose, throat, esophagus, bronchus and pleural feelings area stimulation of afferent medulla cough center, then transfer to the central impulse motor nerve, the inferior laryngeal nerve, phrenic nerve and spinal cord, causing pharyngeal muscle diaphragm and other respiratory muscles respectively to complete the cough action, performance deep breathing, followed by glottal closure, the sudden breath, out of the narrow glottis produced cough movements and sounds.
2 cough is an independent disease?
The cough itself is not an independent disease, but a defensive response to a respiratory obstruction. Many causes of cough: such as respiratory tract acute, chronic inflammation, foreign body in the respiratory tract, airway pressure, allergic reactions, pleural irritation, gastroesophageal reflux, etc.. Therefore, in patients with cough, first of all, to analyze the condition, identify the cause, on the basis of the treatment of the cause, select the appropriate cough medicine, symptomatic treatment.
3 long cough not only need to do further checks?
Chronic cough for more than 8 weeks, known as chronic cough. Many diseases can cause chronic cough, first underwent chest X-ray examination, according to the chest X-ray abnormalities are divided into two categories: one for the chest X-ray have clear lesions, such as pneumonia, tuberculosis, lung cancer, feasible corresponding diagnosis, such as lung CT, PPD test, sputum, sputum for tumor cells in sputum for acid fast bacilli; the other is no clear chest X-ray lesions, cough as the main or only symptoms, namely unexplained chronic cough, feasible lung function, lung high resolution CT, bronchoscopy, sputum induction, 24 hour esophageal pH testing inspection, clear etiology.
4 how to classify cough, what is the most common cause of each category?
Cough is usually divided into 3 categories: acute cough subacute cough and chronic cough. Acute cough time < 3 weeks, subacute cough for 3-8 weeks, chronic cough > for 8 weeks. According to the nature of cough can be divided into dry and wet cough. Acute cough: acute cough is the common cold is the most common disease, other causes include acute bronchitis, acute sinusitis, allergic rhinitis, chronic bronchitis, bronchial asthma; sub acute cough is the most common reason is cough after infection, bacterial sinusitis and asthma; chronic cough: causes of chronic cough is usually more. Divided into two categories: one for the preliminary investigation of X-ray clear lesions, such as pneumonia, tuberculosis, lung cancer etc.. The other one is X-ray showed no abnormalities, or only to cough symptoms, namely unexplained chronic cough (chronic cough). Common causes of chronic cough: cough variant asthma (CVA), upper airway cough syndrome (UACS), eosinophilic bronchitis (EB) and gastroesophageal reflux cough (GERC), these reasons accounted for the proportion of chronic cough in respiratory medicine clinic 70%-95%.
5 why is it easy to catch a cold?
When the cold itself acute symptoms disappeared after cough still delayed healing, clinical called cough after a cold (now called the cough after infection). In addition to respiratory viruses, may also cause such protracted cough and other respiratory tract infections. After a cold cough is a common cause of subacute cough, patients showed more irritating cough or cough with a small amount of white mucus sputum, paroxysmal, sooner or later, serious, can last 3 to 8 weeks or longer. No abnormal chest X-ray examination.
After a cold cough due to increased sensitivity, when external stimuli or cold air can cause cough, cough sensitivity need longer time to recover, so persistent. After a cold cough is usually self limiting, usually can be relieved, antibiotic treatment is often invalid, if cough with obvious antitussive drugs for a period of time, we can ease the symptoms of cough, or even disappear.
6 why do some people always suffer from "cold"?
People suffering from a cold after immunity duration is not long, so people generally susceptible. Even had a cold person, when the next time the influenza epidemic, he will still be infected. There are three main reasons: the first is the repeated cold weather rules, sometimes hot and sometimes cold. After a cold, physical weakness, once again by the drastic changes in cold and hot, easily lead to a new cold. Secondly, the medication is not completely caused by repeated colds. Some people often do, eat cold medicine when cold heavy, a little better to stop the medication, because understanding Chinese tradition: "is the three drug and a lot of cold medicines containing the drowsiness composition, influence. Not doing so will lead to resistance in strains, which makes the cold repeatedly and not easy to cure. Again, the spread of the flu has increased the probability of repeated. At present a lot of high-grade office buildings are fully closed design, indoor and outdoor air circulation, many white-collar workers and the lack of exercise, poor resistance, a cold, soon will affect your co-workers, and make the cold chain effect caused by recurrence.
7 what is the relationship between cough and working and living conditions?
Cough is closely related to working and living environment. Have seen a patient, then moved to the new house two years ago, gradually appeared monthly exacerbation of cough. Dry throat, little phlegm, wheezing, shortness of breath, but not fever in recent months. After various treatment, the chest radiographic examination, sputum microbiology examination, pulmonary function and immunological examinations showed that the diagnosis of bronchial asthma. The patient back to the place after the local environmental protection inspection unit, the concentration of ammonia in indoor air in 2001 the state issued the mandatory implementation of the "civil engineering indoor environmental pollution control" provisions of the limited value of less than 0.2 mg / m3 16 times higher. In an environment of harmful gases and harmful particles can be obtained by adsorption in the upper respiratory tract and the sick, the airway damage includes many aspects, the center target is airway epithelium, can cause patients to reduce resistance, cough, dry throat, sore throat, chest tightness, even in asthma and dyspnea. Currently a popular term, called BRI related diseases (building related illness), on the impact of residential environment on people. Similarly, the work environment air pollution and harmful particles throughout, can also cause diseases, such as pneumoconiosis.
8 what is the empirical treatment of chronic cough?
Because the upper airway cough syndrome (UACS) and separate and cough variant asthma (CVA) alone and at the same time the existence of chronic cough can be accounted for 65%-87%, a treatment step is also oral antihistamines and bronchial dilator for 1 weeks, continue to maintain effective.
The second step treatment is invalid in second, Zhoukou taking prednisone, symptoms to inhaled corticosteroids. This step is mainly for the etiology of EB and CVA.
All of the two treatments were ineffective in the first third weeks into the third step, the target of GERC, the use of proton preparation and gastric motility drugs. The effective treatment for more than 3 months or to cough disappeared, and the 8 week is invalid.
When the first or second step treatment is effective, but after treatment for 4 weeks cough, but can not disappear, but after the treatment of superimposed.