الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Bronchiolitis is a common cause of pediatric hospital admission. Variation in the use of tests and therapies for management of bronchiolitis exists, some of which may contribute to increasedcostsof health care
Bronchiolitis are mostly viral in origin and(respiratory syncytial virus; (RSV) accounts 3/4of cases.Bronchiolitis have high incidence of occurrence during winter(from December to end of March) at whichRSV are widely spread this period of year. Recurrence of infection may occurs even in the same semester.
Air way edema ,mucous secretions debris of inflammation play the major role in the process of bronchiolitis .bronchoconstriction has a very minimal role in the pathogenesis and it is unapparent.
Diagnosis of acute bronchiolitis is clinical one .bronchiolitis presented with dyspnea ,difficult feeding , rhonchi, rales ,coughing and even apnea in premature and early months of life . Bronchiolitis mostly have high incidence from 4 t
o 6 months.months
Many therapies have been used for many years in treatment of acute bronchiolitis. These therapies include use of bronchodilators, glucocorticoids, and nebulized saline solutions
Bronchodilators has been used in the management of acute bronchiolitis and it was a rich field for many studies and medical base evidence of many systematic evidence-based reviews
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