Get to Know more about Asthma
Susceptibility to asthma is influenced by both genetic and environmental factors. Despite of medical management, there is an increase in the prevalence of the asthma and deaths related to asthma.
Get to Know more about Asthma
Asthma is a respiratory disorder characterized by difficulty in breathing. This is caused by temporary narrowing of the bronchi, the airways from the trachea to the lungs. Some may have inflammation of the lining of the airways and the narrowing of the airways resulting in obstruction of airflow and breathing difficulty. In others, the mucus, glands in the airways produce excessive thick mucus, further obstructing air flow.
Attacks usually are brought on by allergic reaction to antigens such as grass and tree pollens, mold spores, fungi, animal dander, dust mites, and certain foods. Attacks may also be caused by chemical irritants in the atmosphere, including cigarette smoke.
Susceptibility to asthma is influenced by both genetic and environmental factors. Despite of medical management, there is an increase in the prevalence of the asthma and deaths related to asthma. This is due to worsening indoor and outdoor pollution that aggravates asthma. An asthma attack may be brief or may last for several days. Typically, an attack begins within minutes after exposure to a triggering agent. Some patients have only occasional or seasonal symptoms, while others have daily symptoms. Symptoms include a sensation of tightness in the chest, coughing and wheezing, and difficulty in breathing.
During attacks, patients usually find it more difficult to exhale and inhale, which causes too much inflation of the chest and impaired lung functions. Attacks that last for hours or days despite treatment can be life-threatening, because patients develop a rapid pulse as the heart attempts to compensate for the lack of oxygen in the blood. They also develop signs of exhaustion and dehydration requiring hospitalization.
On a long-term basis, asthma usually is managed by determining the allergen responsible for the attacks so that patient can avoid it. An allergen is a substance that triggers allergy.
Since asthma is an allergy, the best way to prevent the attack is to have your blood analyzed. The cause of the allergy may be pollen, dust, or tiny furs. But there are also allergies caused by chicken meat, mango fibers, and other kinds of food. If you know the food that causes your allergy, stay away from them. Do not eat much of the allergen.
If avoiding the allergens is not possible, patients can sometimes be desensitized. This is done by injections of graded doses of the allergen at regular intervals. Relaxation ad breathing exercises also help. In sever attacks; oxygen administration of use or a respirator may be required.
Asthma drugs try to lessen the hyperactivity of airways and relax smooth muscle to open the airways. Many medications are inhaled directly into the airways, so less is absorbed into the bloodstream, resulting in fewer side effects. Medications for asthma may be anti-inflammatory or bronchodilators.