Dry cough

Introduction Cough and cough are a kind of reflection that eliminates airway obstruction or foreign body. When coughing, first inhale deeply, close the glottis, and then make strong and powerful inhalation, so that the intrapulmonary pressure rises sharply, then suddenly open the glottis, exhaled out under strong pressure, and the foreign body in the respiratory tract is secreted. Things are also discharged. Therefore, cough can play a role in cleansing the respiratory tract without a dry cough.

Cause

Cause:

Can be seen in acute pharyngitis, bronchitis, early tuberculosis, pleurisy mostly due to visceral dysfunction, such as lung yin loss, loss of clear, qi reversed; or lack of lung gas, lost in Qing; or spleen dysfunction, wet gathering Oysters, stained on the lungs, lungs are not declared; or liver qi stagnation, qi stagnation, fire and lungs, hinder the reduction; or kidney deficiency, the use of power without the right and the second is physical, chemical stimulation or Parasites migrate to the lungs, as well as degeneration of old defensive functions and autonomic dysfunction, can lead to cough.

an examination

Related inspection

Blood routine fiber bronchoscopy chest radiograph bronchial diastolic test chest perspective

There is no sputum or sputum during coughing.

an examination

1. Induced sputum cytology: Cytology Eosinophil elevation is an indicator of eosinophilic bronchitis. The induction of sputum was carried out by ultrasonic atomization inhalation of hypertonic saline.

2. Imaging: X-ray films can determine the location, extent and morphology of lung lesions, and even determine its nature, resulting in preliminary, sexual and related rooms. X-ray films can be used as a routine cough, such as the discovery of organic lesions, according to the characteristics of the lesion.

3. Chest CT: It is helpful to find lung lesions before and after mediastinum, small nodules in the lungs, enlarged lymph nodes in the mediastinum, and smaller masses in the marginal lung field. High-resolution CT contributes to early interstitial lung disease and atypical bronchiectasis.

4. Ventilation function and bronchodilation test: can identify and identify airway obstructive diseases such as asthma, bronchitis and airway tumors. Routine lung function, positive test stimulation contributes to CVA.

5. Fiberoptic bronchoscopy: can effectively reduce the lesions in the tracheal cavity, such as bronchial lung cancer, foreign body, endometrial tuberculosis.

6. Esophageal 24h pH monitoring: determining the presence or absence of gastric-esophageal reflux is the most effective method for GERC. The changes of pH value of esophagus were dynamically monitored, and six parameters such as the number of esophageal pH<4, the longest reflux, and the esophageal pH<4% of the monitoring were obtained, and the Demeester integral reflux degree was obtained. The reflux correlation is recorded in real time to obtain the correlation probability (SAP) of reflux and cough. Reflux phase and cough.

7. Cough sensitivity: The subject is inhaled by inhaling a certain amount of stimulant aerosol particles, stimulating the corresponding cough receptor to induce cough, and using the inhalation concentration as an indicator of cough sensitivity. Commonly used capsaicin inhalation for cough stimulation test, cough sensitivity is common in AC, EB, GERC.

8. Others: 1) Increased peripheral blood eosinophils suggest parasitic infections and allergic diseases. 2) Allergen skin test and serum-specific IgE determination contribute to allergic diseases and to determine allergens.

Differential diagnosis

Differential diagnosis of dry cough:

1. Wet cough: When coughing is accompanied by sputum, it is called wet cough. The respiratory tract has a small amount of secretion under normal conditions. When inflammation occurs in the respiratory tract, the secretion is greatly increased. The wet cough is often caused by various infectious diseases of the respiratory system. .

2, spastic cough: spastic cough manifested as severe cough, coughing a sound, a cough can be dozens of sounds to dozens of sounds for a long time, coughing when the face and neck are red, breathing is affected, Deep coughing often requires deep inhalation. Severe coughing often causes glottic sputum. It sounds like a chicken. Sudden and severe cough often causes retching. After a short cough, it starts to cough and can cause coughing. Laced ulcers, subconjunctival hemorrhage, severe abdominal pressure caused by cough, umbilical hernia, inguinal hernia and rectal prolapse, spastic cough are common in whooping cough, parapertussis and some adenovirus infections.

3, paroxysmal cough: seizure refers to the occurrence of intermittent, there is no persistent state, paroxysmal cough is a description of the form of seizures, there is no cause, so there is no meaning, most of the episode cough is allergic cough.

diagnosis:

There is no sputum or sputum during coughing.

1. Induced sputum cytology: Cytology Eosinophil elevation is an indicator of eosinophilic bronchitis. The induction of sputum was carried out by ultrasonic atomization inhalation of hypertonic saline.

2. Imaging: X-ray films can determine the location, extent and morphology of lung lesions, and even determine its nature, resulting in preliminary, sexual and related rooms. X-ray films can be used as a routine cough, such as the discovery of organic lesions, according to the characteristics of the lesion.

3. Chest CT: It is helpful to find lung lesions before and after mediastinum, small nodules in the lungs, enlarged lymph nodes in the mediastinum, and smaller masses in the marginal lung field. High-resolution CT contributes to early interstitial lung disease and atypical bronchiectasis.

4. Ventilation function and bronchodilation test: can identify and identify airway obstructive diseases such as asthma, bronchitis and airway tumors. Routine lung function, positive test stimulation contributes to CVA.

5. Fiberoptic bronchoscopy: can effectively reduce the lesions in the tracheal cavity, such as bronchial lung cancer, foreign body, endometrial tuberculosis.

6. Esophageal 24 h pH monitoring: determining the presence or absence of gastric-esophageal reflux is the most effective method for GERC. The changes of pH value of esophagus were dynamically monitored, and six parameters such as the number of esophageal pH<4, the longest reflux, and the esophageal pH<4% of the monitoring were obtained, and the Demeester integral reflux degree was obtained. The reflux correlation is recorded in real time to obtain the correlation probability (SAP) of reflux and cough. Reflux phase and cough.

7. Cough sensitivity: The subject is inhaled by inhaling a certain amount of stimulant aerosol particles, stimulating the corresponding cough receptor to induce cough, and using the inhalation concentration as an indicator of cough sensitivity. Commonly used capsaicin inhalation for cough stimulation test, cough sensitivity is common in AC, EB, GERC.

8. Other:

1) Increased peripheral blood eosinophils suggest parasitic infections and allergic diseases.

2) Allergen skin test and serum-specific IgE determination contribute to allergic diseases and to determine allergens.

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