Epidemiology of viral respiratory infections in children undergoing heart surgery
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Updated: Dec 24, 2025

An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
Published on: December 10, 2013
Thalis Henrique da Silva1, João Renato Rebello Pinho2,3, Tarcísio José da Silva Junior1
1Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.
Insights
Viral respiratory infections (VRI) are common in children with congenital heart disease (CHD) undergoing surgery. However, this study found VRI did not significantly impact major outcomes in this patient group.
Area of Science:
- Pediatric Cardiology
- Infectious Diseases
- Respiratory Medicine
Background:
- Acute viral respiratory infections (VRI) pose significant risks, especially for vulnerable populations like infants and the elderly.
- Children with congenital heart disease (CHD) face heightened susceptibility to severe VRI, leading to complications like prolonged hospitalization and increased mortality.
- Altered lung mechanics in CHD patients exacerbate VRI severity and associated adverse outcomes.
Purpose of the Study:
- To determine the incidence of VRI in pediatric patients with CHD undergoing cardiac surgery.
- To compare major clinical outcomes between children with CHD who developed VRI and those who did not.
Main Methods:
- A longitudinal, observational cohort study design was employed.
- Nasopharyngeal samples were collected pre- and post-operatively from pediatric cardiac surgery patients between May 2013 and May 2014.
- Respiratory viruses were identified using the CLART Pneumovir® assay.
Main Results:
- A total of 48 patients were included in the study.
- Preoperative VRI was detected in 33.3% (16/48) of children with CHD; new infections occurred in 8.3% (4/48) postoperatively.
- Univariate and multivariate analyses, controlling for age and STAT category, indicated no significant difference in major outcomes based on VRI presence.
Conclusions:
- Viral respiratory infections are frequently observed in children with CHD undergoing open-heart surgery.
- Despite the high frequency, VRI did not demonstrate a significant impact on major clinical outcomes within this specific cohort.
Background:
Acute viral respiratory infections (VRI) are the most common diseases in humans and are associated with high morbidity and mortality in infants and the elderly. Children with congenital heart disease (CHD) are more susceptible to get severe forms of VRI due to their altered lung mechanics, leading to several complications, such as increased hospital stay, longer mechanical ventilation, and higher mortality. This study aimed to identify the frequency of VRI in children with CHD undergoing cardiac surgery, and to compare the major outcomes according to the presence or absence of a VRI.
Methods:
This was a longitudinal, observational cohort study. Nasopharyngeal secretion samples were collected pre- and postoperatively for patients undergoing cardiac surgery, from May 2013 to May 2014. Respiratory viruses were detected using CLART Pneumovir®.
Results:
Forty-eight patients were enrolled. We found a VRI preoperatively in 16 children with CHD before surgery (33.3%), and the frequency of new infections was 8.3% (4 patients). However, in this study, in univariate analyses, the two groups did not differ in any of the studied outcomes. In the multivariate regression models, adjusting for age and STAT category, the presence of a VRI did not show a significant effect on the major outcomes.
Conclusions:
In conclusion, VRI was frequent in children undergoing open-heart surgery, but the presence of a VRI did not impact on major outcomes in this cohort.
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