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Published on: December 10, 2013
Association between multiple respiratory viral infections and pediatric intensive care unit admission among infants
P Tsou1, A Vadivelan1, M Kovvuri1
1Department of Pediatrics, Driscoll Children's Hospital/Texas A&M College of Medicine, Corpus Christi, TX, United States.
Insights
Infants with multiple respiratory viral infections, or multiviral bronchiolitis, face higher odds of requiring pediatric intensive care unit (PICU) admission. This finding highlights the increased severity associated with co-infections in young children.
Area of Science:
- Pediatrics
- Infectious Diseases
- Critical Care Medicine
Background:
- Bronchiolitis is a common respiratory infection in infants.
- The association between multiple respiratory viral infections and severe bronchiolitis requiring pediatric intensive care unit (PICU) admission remains unclear.
Purpose of the Study:
- To determine the association between multiple respiratory viral infections and PICU admission in infants diagnosed with bronchiolitis.
Main Methods:
- A case-control study compared 135 infants with bronchiolitis admitted to the PICU (cases) against 135 infants admitted to a general pediatric ward (controls).
- Multiplex polymerase chain reaction (PCR) was used to detect respiratory viruses.
- Multivariable logistic regression analysis assessed the association between multiple viral infections (≥2 strains) and PICU admission.
Main Results:
- Infants admitted to the PICU were younger than those admitted to the general ward.
- Multiple viral infections were more prevalent in PICU patients (23.0%) compared to general ward patients (10.4%, P<0.001).
- Bronchiolitis with multiple viral infections was significantly associated with higher odds of PICU admission (adjusted odds ratio: 2.56, P=0.02).
Conclusions:
- Infants experiencing multiviral bronchiolitis demonstrate increased odds of PICU admission.
- This suggests that co-infections contribute to more severe disease requiring intensive care.
Background:
It is unclear whether multiple respiratory viral infections are associated with more severe bronchiolitis requiring pediatric intensive care unit (PICU) admission. We aimed to identify the association between multiple respiratory viral infections and PICU admission among infants with bronchiolitis.
Methods:
We performed a 1:1 case-control study enrolling previously healthy full-term infants (≤12 months) with bronchiolitis admitted to the PICU as cases and those to the general pediatric ward as controls from 2015 to 2017. Multiplex polymerase chain reaction (PCR) was used for detection of the respiratory viruses. We summarized the characteristics of infants admitted to the PICU and the general pediatric unit. Multivariable logistic regression analysis was used to fit the association between multiple respiratory viral infections (≥2 strains) and PICU admission.
Results:
A total of 135 infants admitted to the PICU were compared with 135 randomly selected control infants admitted to the general pediatric unit. The PICU patients were younger (median: 2.2 months, interquartile range: 1.3-4.2) than the general ward patients (median: 3.2 months, interquartile range: 1.6-6.4). Respiratory syncytial virus (74.1%), rhinovirus (28.9%), and coronavirus (5.9%) were the most common viruses for bronchiolitis requiring PICU admission. Patients with bronchiolitis admitted to the PICU tended to have multiple viral infections compared with patients on the general ward (23.0% vs. 10.4%, P<0.001). In the multivariable logistic regression analysis, bronchiolitis with multiple viral infections was associated with higher odds of PICU admission (adjusted odds ratio: 2.56, 95% confidence interval: 1.17-5.57, P=0.02).
Conclusion:
Infants with multiviral bronchiolitis have higher odds of PICU admission compared with those with a single or nondetectable viral infection.
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