PURPOSE: A large number of studies have demonstrated that bronchiolitis by RSV can develop into recurrent wheezing or asthma in infancy. The severity on first attack, atopic finding and evironmental factors can be a risk factors for this recurrent wheezing but not yet defined clearly. We studied to know the risk factors to cause recurrent wheezing after bronchiolitis by RSV. METHODS: Sixty three children who were hospitalized for bronchiolitis by RSV from June 1996 through May 1997 were followed-up. They were classified into recurrent group with wheezing of more than 3 times and no-recurrent group and compared. RESULTS: 1) The recurrent group was 46%(29 of 63 cases) and was higher in both male and whom first wheezing occured in less than 6 months of age. 2) On the first admission, the degree of respiratory distress was more severe in recurrent group. 3) On the first admission, serum ECP was more higher in the recurrent group. And during follow-up, frequency of increased serum IgE and positive skin test to D.p, D.f was higher in the recurrent group. 4) The household environment, personal history of patients and familial history of atopy did not affect on recurrence of wheezing. CONCLUSION: This study demonstrated that younger age of lesser than 6 month of age and severity of respiratory distress on the first admission and positive skin test to D.p, D.f and higher serum IgE during follow-up had significant association with recurrent wheezing.
Asthma ; Bronchiolitis* ; Child ; Family Characteristics ; Follow-Up Studies ; Humans ; Immunoglobulin E ; Male ; Recurrence ; Respiratory Sounds ; Risk Factors ; Skin Tests