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Viral pneumonia in the first month of life
M J Abzug1, A C Beam, E A Gyorkos
1Department of Pediatrics, University of Colorado School of Medicine, Denver.
Insights
Viral pneumonia in neonates is often caused by respiratory syncytial virus. Risk factors for severe disease include prematurity and adenovirus infection, necessitating prompt medical intervention.
Area of Science:
- Pediatrics
- Infectious Diseases
- Virology
Background:
- Neonatal viral pneumonia presents a significant clinical challenge.
- Early-onset pneumonia requires accurate pathogen identification for effective management.
Purpose of the Study:
- To review the clinical characteristics, causative pathogens, and outcomes of viral pneumonia in neonates.
- To identify risk factors associated with severe disease and mortality.
Main Methods:
- Retrospective review of 40 neonates (≤30 days old) diagnosed with viral pneumonia over 5 years.
- Analysis of clinical presentation, laboratory findings, treatment modalities, and patient outcomes.
- Correlation of specific viral agents with clinical features and disease severity.
Main Results:
- Respiratory syncytial virus was the most common pathogen (55%), followed by enteroviruses and rhinoviruses.
- Common symptoms included tachypnea, decreased feeding, and cough; severe signs like apnea and seizures were observed.
- Mechanical ventilation was required in 45% of patients, with a case fatality rate of 7.5%.
- Prematurity, adenovirus infection, and lobar consolidation were identified as risk factors for severe disease.
Conclusions:
- Viral pneumonia in neonates is associated with significant morbidity and mortality.
- Early recognition of risk factors such as prematurity and specific viral pathogens (e.g., adenovirus) is crucial for timely intervention.
- Clinical features, rather than radiographic patterns, may aid in pathogen-specific diagnosis.
Abstract:
We performed a 5-year review of 40 patients less than or equal to 30 days of age with viral pneumonia. Isolates included respiratory syncytial virus (55%), enteroviruses (15%), rhinoviruses (15%), adenoviruses (10%), parainfluenza virus (7.5%) and herpes simplex virus (5%). Most infants were previously healthy but had ill family members. Nine were born at less than 37 weeks of gestation. Symptoms and signs included tachypnea, decreased feeding, cough, cyanosis, lethargy, retractions, apnea, bradycardia, seizures and depressed consciousness. Seasonality and clinical features, but not radiographic patterns, suggested specific pathogens. Patients were moderately to severely ill. The median duration of hospitalization was 7 days; therapies administered included oxygen (90%), mechanical ventilation (45%), blood transfusions (25%) and supplemental oxygen after discharge (27%). The case fatality rate was 7.5%. Prematurity, ill appearance at presentation, lobar consolidation and adenovirus infection were risk factors for severe disease.