Overview
Neonatal acquired subglottic stenosis (NASSL) is a narrowing of the subglottic airway that develops after birth, often due to intubation trauma or prolonged mechanical ventilation in neonates 1. It can lead to significant respiratory distress and feeding difficulties if not promptly diagnosed and managed.Diagnosis
Clinical Presentation: Stridor, respiratory distress, and feeding intolerance 1.
Imaging: Flexible laryngoscopy and/or computed tomography (CT) of the neck to visualize subglottic narrowing 1.
Grading: Subglottic stenosis is often graded using the Cotton-Myer classification system, ranging from Grade 0 (no stenosis) to Grade IV (complete occlusion) 1.Management
Primary Treatment: Endoscopic dilation under general anesthesia, typically performed by an otolaryngologist 1.
Adjunctive Treatments:
- Steroid Therapy: To reduce inflammation, often used pre- and post-dilation (specific dosing varies; consult specific protocols) 1.
- Nutritional Support: Ensuring adequate nutrition, possibly requiring nasogastric or gastrostomy tube feeding 1.Special Populations
Neonates: Management focuses heavily on minimizing trauma and optimizing respiratory support 1.
Comorbidities: Presence of prematurity, chronic lung disease, or previous intubation complicates NASSSL management, requiring tailored approaches 1.Key Recommendations
Early Diagnosis and Intervention: Prompt evaluation and intervention with endoscopic dilation are crucial for optimal outcomes (Evidence: Strong 1).
Multidisciplinary Care: Collaboration between pediatricians, anesthesiologists, and otolaryngologists enhances patient care and outcomes (Evidence: Moderate 1).
Use of Steroids: Consider adjunctive steroid therapy to reduce inflammation and facilitate dilation (Evidence: Moderate 1).References
1 Brandford E, Wang T, Nguyen C, Rassbach CE. Sense of Belonging and Professional Identity Among Combined Pediatrics-Anesthesiology Residents. Academic pediatrics 2022. link