Asbestosis
This Article is Posted by Admin
What is Asbestosis?
Since the early 1930s, it has been shown that various groups knew of the inherent dangers of dealing with asbestos. There is some evidence that suggests even the ancient Greeks and Romans knew of the health problems. Unfortunately, the knowledge that asbestos could cause diseases like asbestosis did not become widespread until the 1970s. Asbestosis is one of two deadly diseases that has been linked directly to long-term exposure to asbestos.
Asbestosis is a chronic lung ailment that is indicated by swelling within the lungs including in the alveoli and other air-carrying portions of the lung. This inflammation makes it difficult for the afflicted person to breath. Like many diseases, if it is left untreated, asbestosis will progress and lead to eventual respiratory failure.
In addition to the potential for respiratory failure, asbestosis leaves an affected individual at a greater risk for the lung cancer mesothelioma. This is because the same tiny asbestos fibers that lead to the scarring that cause asbestosis also are the cause of mesothelioma.
What is this Condition?
This lung condition is characterized by widespread filling and inflammation of the lung spaces with asbestos fibers. It can develop as long as 15 to 20 years after regular exposure to asbestos has ended. A potent cocarcinogen, asbestos aggravates the risk of lung cancer in cigarette smokers.
What Causes it?
Asbestosis is caused by the inhalation of small asbestos fibers. These fibers move in the direction of airflow and penetrate the breathing passages. Sources include the mining and milling of asbestos, the construction industry (where asbestos is used in a prefabricated form), and the fireproofing and textile industries. It has also has been used in the production of paints, plastics, and automobile brake and clutch linings.
Asbestos-related diseases develop in families of workers as a result of exposure to the fibrous dust shaken off workers’ clothing at home. Asbestosis also strikes people who are exposed to fibrous dust or waste piles from nearby asbestos plants.
Inhaled fibers become encased in a brown, protein like sheath rich in iron called ferruginous bodies or asbestos bodies found in sputum and lung tissue.
What are its symptoms?
The first symptom is usually shortness of breath on exertion, typically after 10 years’ exposure. As lung damage becomes more extensive, this increases, until eventually the person is short of breath, even at rest. Advanced disease also causes a cough, chest pain, recurrent respiratory infections, and rapid breathing.
Asbestosis may cause complications, such as an enlarged heart and pulmonary hypertension. Club-shaped fingers commonly occur.
How is it Diagnosed?
The persons history reveals occupational, family, or neighborhood exposure to asbestos fibers. A physical exam reveals characteristic, dry crackles at the bases of the lungs. An arterial blood gas test reveals a decreased oxygen level and a low carbon dioxide level. Finally, a chest X-ray and pulmonary function studies help diagnose this disease.
How is it Treated?
This disease can’t be cured. The goal of treatment is to relieve respiratory symptoms and, in advanced disease, to control the complications.
Respiratory symptoms may be relieved by chest physical therapy techniques such as controlled coughing. Aerosol therapy, inhaled mucolytics, and increased fluids (at least 3 quarts [3 liters] daily) may also help relieve respiratory symptoms. Diuretics, digitalis glycoside preparations, and salt restriction may be indicated for people with cor pulmonale. Oxygen deficiency requires oxygen administration by mask or by a mechanical ventilator. Respiratory infections require prompt administration of antibiotics.
What can a person with asbestosis do?
• To prevent infections, avoid crowds and persons with infections and receive influenza and pneumococcal vaccines .
• To improve your breathing, undergo physical reconditioning, conserve your energy in daily activities, and use relaxation techniques.
