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Asthma( Nursing)

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Submitted By sweetieb1122
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Asthma
Hanna Bazzi
Nsg 222
Henry Ford Community College

Definition
Bronchial asthma is a chronic disorder of the airway obstruction, bronchial hyper responsiveness, and airway inflammation that are usually reversible. It is a chronic lung disease. According to 2005 data, an estimated 22.2 million American (3.8million children younger than 18 years of age) had an asthma attack (Porth and Matfin, 2009 pg), (Ignatavicius and Workman, 2010). Although the prevalence rates for asthma have increased over the past several decades, the mortality and hospitalizations rates have stabilized.
Risk factors
There are several risk factors for asthma which include air pollution, infection, occupational chemicals and dust. Cigarette smoking is the most common factor in developing the disease. “Clinically significant airway obstruction develops in approximately 15% to 20% of smokers and 80% to 90% of asthma deaths in the United States are related to tobacco smoking” (Dirksen, O'Brien, Lewis, 2009, p. 631). Cigarette smoke has a direct effect on the respiratory tract in many different ways. Smoking reduces the ciliary activity and may cause loss of ciliated cells. It can also reduce airway diameter and increase the difficulty in clearing any secretions. People who are exposed to high levels of air pollution or prolonged exposure to various dusts, vapors or fumes could increase the risk for developing asthma (Porth and Matfin, 2009), (Ignatavicius and workman, 2010).
Pathophysiology
People who have asthma have inflammation of the airways that carry air into and out of the lungs. This makes the airways swollen and very sensitive and it makes pulmonary ventilation very hard. The airways of the lungs consist of the cartilaginous bronchi, membranous bronchi, and

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