symptoms of pneumoconiosis, early symptoms and signs of pneumoconiosis
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Symptoms of pneumoconiosis
Early symptoms: Cough is not obvious in early pneumoconiosis patients
Late symptoms: Late patients are often complicated with lung infection, which can obviously aggravate cough. Cough is related to season, climate, etc. With the aggravation of pulmonary fibrosis, the effective respiratory area decreases, the ventilation/blood flow ratio is out of balance, and dyspnea is gradually aggravated.
Asbestosis can have no symptoms and X-ray changes in the early stage, only shortness of breath after activities, and the onset of patients is mostly hidden. Symptoms appear more than 7 ~ 10 years after exposure to dust, but a few people also have symptoms only about 1 year after exposure to dust. The typical symptom of asbestosis is slow appearance and gradual aggravation of dyspnea, which is mainly labor in the early stage, and the severity is related to the time and concentration of dust exposure. Generally, it is a dry cough. Severe smokers often have a severe cough, accompanied by mucus and sputum. Chest pain is often mild, often dull pain behind the back or sternum, and hemoptysis is rare. Hemoptysis can occur when complicated with tumors, and fever and cough pus and phlegm begin when complicated with infection. Early physical examination is often no abnormal found, sometimes twisting sounds can be heard in the lungs, or there are dry and wet rales, and occasionally there are pleural fricative sounds. Late patients may have clubbing fingers (toes), which can be seen in 75% of patients, and may have signs of cyanosis and cor pulmonale. Asbestos fibre piercing skin can produce asbestos wart or corns, see in finger flexion side, palm and plantar.
It mainly depends on the contact history of asbestos dust and chest X-ray manifestations.
1. Long-term asbestos exposure history, such as miners, workers in processing plants, people around asbestos plants, etc.
2. Chest X-ray examination: See the appendix of silicosis for diagnostic criteria and staging. When the lung changes to "0", if the chest wall on both sides has localized pleural plaque, it can be determined as "I"; If the lung lesion is "I", and the pleural change involves part of the diaphragm surface of the heart margin, which makes it blurred, it can be defined as "II"; If the shadow in the lung does not meet the standard of "III", but the pleural changes involve the heart margin and show "loose heart", it can be defined as "III".