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Synchronous airway lesions in infancy
Insights
Evaluating infant stridor requires examining the entire airway. Many infants have multiple synchronous airway lesions, necessitating thorough diagnostic procedures beyond initial laryngoscopy.
Area of Science:
- Pediatrics
- Otolaryngology
- Pulmonology
Background:
- Stridor is a common respiratory symptom in infants.
- Laryngoscopy is the primary diagnostic tool for laryngeal lesions causing stridor.
- The need for further investigation of the lower airway after laryngeal diagnosis is debated.
Purpose of the Study:
- To determine the incidence of multiple synchronous airway lesions in infants presenting with stridor or airway obstruction.
- To assess the diagnostic yield of combined laryngoscopy and bronchoscopy compared to laryngoscopy alone.
Main Methods:
- A retrospective study of 103 infants undergoing diagnostic laryngoscopy and bronchoscopy.
- Data collected over a 2-year period at Children's Hospital of Pittsburgh.
- Analysis of concurrent upper and lower airway diagnoses.
Main Results:
- 18.5% of infants (18 out of 103) had two or more synchronous airway lesions.
- Laryngoscopy alone may miss significant lower airway abnormalities.
- Combined procedures identified a substantial rate of concurrent pathology.
Conclusions:
- Comprehensive evaluation of the entire respiratory tract is crucial for infants with stridor.
- Bronchoscopy is often necessary to rule out concurrent lesions not visible by laryngoscopy.
- Failure to investigate the entire airway can lead to missed diagnoses in pediatric airway obstruction.
Abstract:
Stridor in the young infant is evaluated by careful laryngoscopy. When a lesion of the larynx is diagnosed, the necessity and risk of bronchoscopy are challenged. To assess the need for careful examination of both the upper and lower respiratory tract, a 2-year retrospective study was performed at the Children's Hospital of Pittsburgh. Of 103 infants who underwent diagnostic laryngoscopy and bronchoscopy for airway obstruction, stridor, or both, 18 (17.5%) had two or more synchronous airway lesions detected. Laryngoscopy alone, without further workup of the entire respiratory tract (ie, bronchoscopy, radiographic studies) may fail to detect concurrent disorders in infants with airway obstruction.