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Arch Pediatr Adolesc Med. 2010 Oct;164(10):915-22. doi: 10.1001/archpediatrics.2010.177.

Recurrent wheezing in the third year of life among children born at 32 weeks' gestation or later: relationship to laboratory-confirmed, medically attended infection with respiratory syncytial virus during the first year of life.

Author information

1
Division of Research, Systems Research Initiative and Perinatal Research Unit, Kaiser Permanente Medical Care Program, Oakland, California 94612, USA. gabriel.escobar@kp.org

Abstract

OBJECTIVE:

To quantify the relationship between recurrent wheezing (RW) in the third year of life and respiratory syncytial virus (RSV) infection, prematurity, and neonatal oxygen exposure.

DESIGN:

Retrospective cohort study linking inpatient, outpatient, and laboratory databases for cohort assembly and logistic regression analysis.

SETTING:

Integrated health care delivery system in Northern California.

PARTICIPANTS:

A total of 71,102 children born from 1996 to 2002 at 32 weeks' gestational age or later who were health plan members for 9 or more months in their first and third years.

MAIN EXPOSURES:

Laboratory-confirmed, medically attended RSV infection during first year and supplemental oxygen during birth hospitalization.

OUTCOME MEASURES:

Recurrent wheezing, quantified through outpatient visits, inpatient hospital stays, and asthma prescriptions.

RESULTS:

The rate of RW in the third year of life was 16.23% among premature infants with RSV and 6.22% among those without RSV. The risk of RW increased among infants who had an RSV outpatient encounter (adjusted odds ratio [AOR], 2.07; 95% CI, 1.61-2.67), uncomplicated RSV hospitalization (AOR, 4.66; 95% CI, 3.55-6.12), or prolonged RSV hospitalization (AOR, 3.42; 95% CI, 2.01-5.82) compared with infants without RSV encounters. Gestational age of 34 to 36 weeks was associated with increased risk of RW (AOR, 1.23; 95% CI 1.07-1.41) compared with 38 to 40 weeks, while a gestational age of 41 weeks or more was protective (AOR, 0.90; 95% CI, 0.81-0.99). Supplemental oxygen exposure was associated with increased risk at all levels.

CONCLUSION:

Laboratory-confirmed, medically attended RSV infection, prematurity, and exposure to supplemental oxygen during the neonatal period have independent associations with the development of RW in the third year of life.

PMID:
20921348
DOI:
10.1001/archpediatrics.2010.177
[Indexed for MEDLINE]

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