Prevalence, Severity, and Treatment of Recurrent Wheezing During the First Year of Life: A Cross-Sectional Study of 12,405 Latin American Infants

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2016
Autores
Mallol, Javier
Sole, Dirceu [UNIFESP]
Garcia-Marcos, Luis
Rosario, Nelson
Aguirre, Viviana
Chong, Herberto
Urrutia-Pereira, Marilyn
Szulman, Gabriela
Niederbacher, Jurg
Arruda-Chavez, Erika
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Purpose: This study aimed to determine the prevalence and severity of recurrent wheezing (RW) defined as 3 episodes of wheezing, risk factors, and treatments prescribed during the first year of life in Latin American infants. Methods: In this international, cross-sectional, and community-based study, parents of 12,405 infants from 11 centers in 6 South American countries (Argentina, Brazil, Chile, Colombia, Peru, and Uruguay) completed a questionnaire about wheezing and associated risk/protective factors, asthma medications, and the frequency of and indications for the prescription of antibiotics and paracetamol during the first year of life. Results: The prevalence of RW was 16.6% (95% Cl 16.0-17.3)
of the 12,405 infants, 72.7% (95% Cl 70.7-74.6) visited the Emergency Department for wheezing, and 29.7% (27.7-31.7) was admitted. Regarding treatment, 49.1% of RW infants received inhaled corticosteroids, 55.7% oral corticosteroids, 26.3% antileukotrienes, 22.9% antibiotics >= 4 times mainly for common colds, wheezing, and pharyngitis, and 57.5% paracetamol >= 4 times. Tobacco smoking during pregnancy, household income per month <1,000 USD, history of parental asthma, male gender, and nursery school attendance were significant risk factors for higher prevalence and severity of RW, whereas breast-feeding for at least 3 months was a significant protective factor. Pneumonia and admissions for pneumonia were significantly higher in infants with RW as compared to the whole sample (3.5-fold and 3.7-fold, respectively). Conclusions: RW affects 1.6 out of 10 infants during the first year of life, with a high prevalence of severe episodes, frequent visits to the Emergency Department, and frequent admissions for wheezing. Besides the elevated prescription of asthma medications, there is an excessive use of antibiotics and paracetamol in infants with RW and also in the whole sample, which is mainly related to common colds.
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Allergy Asthma & Immunology Research. Jongno-Gu, v. 8, n. 1, p. 22-31, 2016.
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