RSV Presentation and Treatment in Pediatrics
Clinical Presentation
RSV infection in children typically begins with upper respiratory symptoms (fever, rhinorrhea, nasal congestion) for 2-4 days, followed by lower respiratory tract involvement with increasing cough, wheezing, and respiratory distress. 1
Symptom Progression by Severity:
- Mild disease: Upper respiratory symptoms only—nasal congestion, cough, low-grade fever 2
- Moderate disease: Lower respiratory tract involvement with wheezing, tachypnea, increased work of breathing 2
- Severe disease: Hypoxemia (SpO2 <90%), apnea (especially in young infants), respiratory failure, inability to feed 3, 2
High-Risk Populations Requiring Vigilant Monitoring:
- Premature infants (≤35 weeks gestation, especially ≤28 weeks) 4
- Infants with chronic lung disease/bronchopulmonary dysplasia requiring medical treatment within previous 6 months 4, 5
- Children with hemodynamically significant congenital heart disease 4
- Immunocompromised patients, particularly those with profound lymphopenia (<100 cells/mm³) 4, 6
- Children with neuromuscular disorders impairing secretion clearance 4
- Infants with Down syndrome 4, 2
Treatment Approach
Supportive Care is the Cornerstone of Management
For acute RSV infection, treatment is entirely supportive—there is NO effective antiviral therapy for routine use, and most interventions studied (bronchodilators, corticosteroids, hypertonic saline) provide no benefit. 3, 6, 1
Oxygen Management:
- Administer supplemental oxygen when SpO2 falls persistently below 90-92% via nasal cannula, head box, or face mask 3, 6
- Target oxygen saturation >92% 3
- Discontinue continuous pulse oximetry as clinical status improves in stable patients 6
- Premature infants and those with cardiopulmonary disease require close monitoring during oxygen weaning 6
Escalation for Respiratory Distress:
- Initiate high-flow nasal oxygen (HFNO) as first-line escalation when standard oxygen supplementation fails 3
- Prepare for immediate intubation if: SpO2 cannot be maintained >92% despite FiO2 >60%, recurrent apnea occurs, or signs of respiratory failure develop 3, 6
- Non-invasive ventilation (NIV) is generally NOT recommended due to high failure rates 6
Hydration Support:
- Provide intravenous or nasogastric fluids for infants unable to maintain adequate oral intake 3, 6, 1
- Assess hydration status continuously 6
Symptomatic Relief:
- Use acetaminophen or ibuprofen for fever management 3, 6
- Perform gentle nasopharyngeal suctioning only when nasal secretions obstruct breathing 3
- Elevate head of bed 30-45 degrees 3
What NOT to Do (Critical Pitfalls)
Avoid these interventions that provide no mortality, morbidity, or quality of life benefit:
- DO NOT use bronchodilators routinely—they show no consistent benefit in RSV bronchiolitis 3, 6
- DO NOT use corticosteroids—they provide no benefit for mortality, morbidity, or quality of life 3, 6
- DO NOT prescribe antibiotics unless documented bacterial co-infection exists (concurrent serious bacterial infections occur in only 1.6% of RSV hospitalizations) 3, 6, 7
- DO NOT use palivizumab for treatment—it is ONLY for prevention in high-risk infants and has no therapeutic benefit for established RSV infection 6, 5
- DO NOT use ribavirin routinely—it should NOT be used in children with RSV bronchiolitis except in severely immunocompromised patients, HSCT recipients, or mechanically ventilated infants with documented severe RSV infection 6
Prevention Strategies (Palivizumab Prophylaxis)
Palivizumab is indicated ONLY for prevention (not treatment) in specific high-risk pediatric populations during RSV season. 4, 5
Indications for Palivizumab:
- Infants born ≤28 weeks gestation who are <12 months old at start of RSV season 6
- Infants born 29-31 weeks gestation may benefit up to 6 months of age 6
- Infants with bronchopulmonary dysplasia requiring medical treatment within previous 6 months, who are ≤24 months old 4, 5
- Children with hemodynamically significant congenital heart disease who are ≤24 months old 4, 5
Dosing:
- 15 mg/kg intramuscularly monthly throughout RSV season (typically November through April) 4, 5
- Maximum of 5 doses per season 4
- Administer additional dose immediately after cardiopulmonary bypass (even if <1 month from previous dose) 4, 5
- Palivizumab reduces RSV hospitalization by 45-55% in high-risk populations 6
Special Considerations for Immunocompromised Patients
For severely immunocompromised patients (HSCT recipients, profound lymphopenia <100 cells/mm³), ribavirin is the primary antiviral option, though evidence is limited to observational data. 4, 6
Ribavirin Administration:
- Aerosolized ribavirin is FDA-approved for hospitalized infants with severe lower respiratory tract RSV infection 6
- Systemic ribavirin (oral or IV, 10-30 mg/kg/day in 3 divided doses) for patients unable to take oral medication 6
- Consider combination therapy with IVIG or anti-RSV-enriched antibody preparations for allogeneic HSCT patients 6
- Monitor for hemolysis, abnormal liver function, declining renal function, and bronchospasm 6
Infection Control Measures
Hand hygiene is the single most important measure to prevent RSV transmission. 6
- Use alcohol-based hand rubs before and after patient contact 6
- Wear gloves and gowns for direct patient contact 3, 6
- Educate staff and family members about hand sanitation 6
- Consider isolation or cohorting of RSV-positive patients 3
- Programs implementing strict hand hygiene decrease nosocomial RSV transmission by 39-50% 6
Universal Prevention for All Infants
- Avoid tobacco smoke exposure completely 6
- Limit exposure to crowds and group childcare during RSV season 6
- Keep infants away from sick contacts 6
- Encourage breastfeeding to potentially decrease risk of lower respiratory tract disease 6
- Ensure influenza vaccination for infant (starting at 6 months) and all household contacts 6