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Laryngomalacia — Clinical Guidelines

Overview

Laryngomalacia is the most common congenital laryngeal anomaly in infants, characterized by soft tissue prolapse into the airway, leading to varying degrees of inspiratory stridor and feeding difficulties. 3

Diagnosis

Key Diagnostic Criteria: Inspiratory stridor, often worse in the supine position, and typically present from birth. 3

Recommended Tests: Fiberoptic flexible laryngoscopy, either awake or under anesthesia/sedation. Awake technique may miss cases compared to anesthetized evaluations. 4

Grading: Laryngomalacia scoring systems (e.g., scoring range 0-8) help quantify severity, with a threshold score of 2 often used to diagnose. 4

Management

First-Line Treatments: Feeding modifications (e.g., positional changes, smaller feeds). 1

Adjunctive Treatments: Acid suppression therapy (AST) may be considered in mild to moderate cases without significant GERD, though efficacy is variable. Famotidine can be used, but resolution rates are modest. 1

Surgical Intervention: Supraglottoplasty indicated for severe cases unresponsive to conservative management. 2

Special Populations

Pediatrics: Infants with laryngomalacia often outgrow symptoms by 12-18 months, but severe cases may require early intervention. 5

Comorbidities: Laryngomalacia can present with or contribute to apnea of infancy, necessitating sleep studies for diagnosis. 6

Key Recommendations

Consider feeding modifications as initial management for infants with laryngomalacia (Evidence: Moderate 1).

Pathologic examination of supraglottoplasty specimens is not necessary for postoperative management and can lead to cost savings (Evidence: Strong 2).

Awake fiberoptic laryngoscopy may not be as sensitive as anesthetized evaluations for diagnosing laryngomalacia; consider sedation when diagnostic clarity is crucial (Evidence: Moderate 4).

References

1 Shaffer AD, Balogun Z, Tobey ABJ, Maguire RC, Simons JP, Dohar JE et al.. Acid Suppression in Mild-Moderate Laryngomalacia Without GERD: A Randomized Controlled Trial. The Laryngoscope 2026. link 2 Elghouche AN, Alwani MM, Matt BH. Indiscriminate Pathologic Examination of Pediatric Supraglottoplasty Specimens: An Evidence-Based Approach toward Exempt Status. Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery 2020. link 3 Hoskison E, Grainger J. Fifteen-minute consultation: investigation and management of an infant with stridor. Archives of disease in childhood. Education and practice edition 2017. link 4 Sivan Y, Ben-Ari J, Soferman R, DeRowe A. Diagnosis of laryngomalacia by fiberoptic endoscopy: awake compared with anesthesia-aided technique. Chest 2006. link 5 Archer SM. Acquired flaccid larynx. A case report supporting the neurologic theory of laryngomalacia. Archives of otolaryngology--head & neck surgery 1992. link 6 Sivan Y, Ben-Ari J, Schonfeld TM. Laryngomalacia: a cause for early near miss for SIDS. International journal of pediatric otorhinolaryngology 1991. link90060-o) 7 Benjamin B. Documentation in pediatric laryngology. The Annals of otology, rhinology, and laryngology 1981. link

Laryngomalacia