Volume 54, Issue 3 pp. 245-256
ORIGINAL ARTICLE: ASTHMA

Children with poorly controlled asthma: Randomized controlled trial of a home-based environmental control intervention

Arlene Manns Butz ScD, RN, CRNP

Corresponding Author

Arlene Manns Butz ScD, RN, CRNP

Division of General Pediatrics and Adolescent Medicine, Baltimore, Maryland

The Johns Hopkins University School of Nursing, University of Maryland, Baltimore, Maryland

Correspondence

Arlene M. Butz, ScD, RN, CRNP, Department of Pediatrics, Johns Hopkins University School of Medicine, 200 N. Wolfe St, Baltimore 21287, MD, USA.

Email: [email protected]

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Mary E. Bollinger DO

Mary E. Bollinger DO

School of Medicine, Department of Pediatrics, Baltimore, Maryland

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Jean Ogborn MD, MPH

Jean Ogborn MD, MPH

Department of Pediatric Emergency Medicine, Johns Hopkins University, Baltimore, Maryland

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Tricia Morphew MS

Tricia Morphew MS

Morphew Consulting LLC, Bothell, Washington

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Shawna S. Mudd DNP, CRNP

Shawna S. Mudd DNP, CRNP

The Johns Hopkins University School of Nursing, University of Maryland, Baltimore, Maryland

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Joan E. Kub PhD, RN

Joan E. Kub PhD, RN

Department of Nursing, USC Suzanne Dworak-Peck School of Social Work, Los Angeles, California

University of Maryland, Baltimore, Maryland

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Melissa H. Bellin PhD, LCSW

Melissa H. Bellin PhD, LCSW

School of Social Work, Johns Hopkins University School of Medicine, Baltimore, Maryland

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Cassia Lewis-Land MS

Cassia Lewis-Land MS

Division of General Pediatrics and Adolescent Medicine, Baltimore, Maryland

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Kelli DePriest BSN

Kelli DePriest BSN

The Johns Hopkins University School of Nursing, University of Maryland, Baltimore, Maryland

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Mona Tsoukleris PharmD, MS

Mona Tsoukleris PharmD, MS

The School of Pharmacy, University of Maryland, Baltimore, Maryland

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First published: 06 January 2019
Citations: 16

Abstract

Background

Few trials have tested targeted environmental control (EC) interventions based on biomarkers of second hand smoke (SHS) exposure and allergen sensitization in reducing asthma emergency department (ED) visits in children with poorly controlled asthma.

Methods

Overall, 222 children with poorly controlled asthma were randomized into a home-based EC intervention (INT) or control (CON) group and followed for ED visits over 12 months. All children received allergen-specific IgE serologic testing and SHS exposure biomarker testing to inform the EC intervention. Pharmacy data was examined for asthma medication fills. Cox proportional hazards and multivariate regression models were performed to examine factors associated with repeat ED visits.

Results

There was no difference in increased risk of >1 ED visit at 12 months between INT and CON groups. Most children (75%) had moderate/severe persistent asthma. Over half (56%) had SHS exposure and 83% tested positive for >1 allergen sensitization. Among children without SHS exposure, the median time to first recurrent ED visit differed by group (CON: 195; INT: >365 days) after adjusting for child age, allergic sensitization, medication fills prior to baseline, controller medication use, and the interaction between group status and SHS exposure. Children who had positive allergic sensitizations, younger, had increased controller medication use and randomized to the CON group and had no SHS exposure had increased risk for a repeat ED visit over 12 months.

Conclusions

In this study, a home-based EC intervention was not successful in reducing asthma ED revisits in children with poorly controlled asthma with SHS exposure. Allergic sensitization, young age, and increased controller medication use were important predictors of asthma ED visits.

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