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Published on: August 7, 2017
Risk factors for adverse outcomes of Indigenous infants hospitalized with bronchiolitis
Gabrielle B McCallum1, Mark D Chatfield1, Peter S Morris1,2
1Child Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, 0811, Northern Territory, Australia.
Insights
Hospitalized bronchiolitis in Indigenous infants is linked to prolonged stays and future respiratory issues. Persistent symptoms after illness may indicate bronchiectasis, highlighting the need for ongoing care.
Area of Science:
- Pediatric Respiratory Medicine
- Infectious Diseases
- Public Health
Background:
- Bronchiolitis significantly impacts hospitalized infants, especially Indigenous children.
- Limited data exists on risk factors for prolonged hospitalization and persistent symptoms.
- Understanding these factors is crucial for improving long-term outcomes.
Purpose of the Study:
- To identify clinical and microbiological factors associated with prolonged length of stay (LOS).
- To determine predictors of persistent respiratory symptoms at 3 weeks post-hospitalization.
- To assess risks for bronchiectasis and 6-month respiratory readmissions.
Main Methods:
- A cohort of 232 Indigenous infants hospitalized with bronchiolitis was studied.
- Clinical data was collected using standardized forms.
- Nasopharyngeal swabs identified respiratory viruses and bacteria.
Main Results:
- A 12-point severity score was associated with prolonged LOS in Indigenous infants.
- Persistent cough at 3 weeks increased the odds of developing bronchiectasis.
- Previous respiratory hospitalization and household smoke exposure were linked to readmissions.
Conclusions:
- Increased illness severity score predicts longer hospital stays for Indigenous infants with bronchiolitis.
- Persistent symptoms post-hospitalization correlate with future bronchiectasis diagnoses.
- Optimizing post-hospital care is vital for long-term respiratory health in at-risk infants.
Background:
Hospitalized bronchiolitis imposes a significant burden among infants, particularly among Indigenous children. Traditional or known risk factors for severe disease are well described, but there are limited data on risks for prolonged hospitalization and persistent symptoms. Our aims were to determine factors (clinical and microbiological) associated with (i) prolonged length of stay (LOS); (ii) persistent respiratory symptoms at 3 weeks; (iii) bronchiectasis up to ∼24 months post-hospitalisation; and (iv) risk of respiratory readmissions within 6 months.
Methods:
Indigenous infants hospitalized with bronchiolitis were enrolled at Royal Darwin Hospital between 2008 and 2013. Standardized forms were used to record clinical data. A nasopharyngeal swab was collected at enrolment to identify respiratory viruses and bacteria.
Results:
The median age of 232 infants was 5 months (interquartile range 3-9); 65% male. On multivariate regression, our 12 point severity score (including accessory muscle use) was the only factor associated with prolonged LOS but the effect was modest (+3.0 hr per point, 95%CI: 0.7, 5.1, P = 0.01). Presence of cough at 3 weeks increased the odds of bronchiectasis (OR 3.0, 95%CI: 1.1, 7.0, P = 0.03). Factors associated with respiratory readmissions were: previous respiratory hospitalization (OR 2.3, 95%CI: 1.0, 5.4, P = 0.05) and household smoke (OR 2.6, 95%CI: 1.0, 6.3, P = 0.04).
Conclusion:
Increased severity score is associated with prolonged LOS in Indigenous children hospitalized with bronchiolitis. As persistent symptoms at 3 weeks post-hospitalization are associated with future diagnosis of bronchiectasis, optimising clinical care beyond hospitalization is needed to improve long-term respiratory outcomes for infants at risk of respiratory disease. Pediatr Pulmonol. 2016;51:613-623. © 2015 Wiley Periodicals, Inc.
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