black lung disease :: essays research papers

Black Lung DiseaseEvery year, almost 1,500 people who squander worked in the rural areas coalmines die from black lung disease. Thats equivalent to the Titanic sinking every year, with no ships coming to the rescue. While that disaster which took place so big ago continues to fascinate the nation, black lung victims die an agonizing death in isolated rural communities, away from the spotlight of publicity.Black lung is the legal term for a man-made, occupational lung disease that is contracted by prolonged breathing of coalmine dust. Some c on the whole it miners asthma, silicosis, pneumonoultramicroscopicsilicovolcanoconiosis, coal workers pneumoconiosis, or black lung. However, they are all dust diseases with the same signals. Only the smallest particles of the coal dust make it past the nose, mouth, and throat into the alveoli found deep in the lungs. The alveoli, or air sacs, are amenable for exchanging gases with the blood, and are located at the end of each bronchiole. M icrophages, a type of blood cell, gather foreign particles and carry them to where they can either be swallowed or coughed out. If too much dust is inhaled over a long period of time, some dust-laden microphages and particles collect permanently in the lungs causing black lung disease. The main symptom of the disease is shortness of breath, which gets worse as the disease progresses. In severe cases, the patient may develop cor pulmonale, which is an enlargement and strain on the right placement of the heart caused by chronic lung disease. Eventually, this may cause right-sided heart failure. Some patients develop emphysema as a complication of black lung disease. Others develop a severe type of black lung disease in which damage continues to the upper part of the lungs even after exposure to the dust has ended called progressive long fibrosis. Black lung disease can be diagnosed by checking a patients history for exposure to the coal dust, followed by a chest roentgen ray to see if the characteristic spots on the lungs are present. A pulmonary function test may help in the diagnosis. However, all coalminers should have chest x-rays every four years so the disease can be detected early. Congress placed strict limits on airborne dust and ordered operators to take periodic air tests inside coalmines in 1969.