Deep laryngeal penetration as a predictor of aspiration
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Updated: Oct 16, 2026

Point-of-Care Ultrasound: A Review of Ultrasound Parameters for Predicting Difficult Airways
Published on: April 7, 2023
1Occupational Therapy Department, The Children's Hospital, Denver, Colorado 80218, USA.
Insights
Laryngeal penetration, a swallowing issue, affects 60% of pediatric patients with dysphagia. Deep penetration strongly correlates with aspiration, indicating a significant risk in children with swallowing difficulties.
Area of Science:
- Pediatric Medicine
- Otolaryngology
- Speech-Language Pathology
Background:
- Laryngeal penetration is often overlooked as a distinct event from aspiration.
- It is considered infrequent in adults without swallowing disorders.
Purpose of the Study:
- To determine the incidence of laryngeal penetration in pediatric patients with dysphagia.
- To explore the relationship between laryngeal penetration and aspiration in this population.
Main Methods:
- Retrospective chart review of 125 pediatric patients (7 days to 19 years) with dysphagia.
- Analysis of videofluoroscopic swallowing studies (VFSS) to identify laryngeal penetration and aspiration.
- Correlation analysis between deep laryngeal penetration and aspiration events.
Main Results:
- Laryngeal penetration was identified in 60% of the study group.
- Deep laryngeal penetration occurred in 31% of patients.
- 85% of children with deep laryngeal penetration also aspirated, indicating a strong association.
Conclusions:
- Laryngeal penetration is a common occurrence in children with dysphagia.
- Deep laryngeal penetration is a significant risk factor for aspiration in pediatric patients.
- Extended feeding protocols during VFSS may be a valuable diagnostic tool for identifying penetration and aspiration risks.
Abstract:
Very little has been written about laryngeal penetration as a separate diagnostic event from aspiration. Laryngeal penetration has been described as an infrequent event in adult individuals without swallowing problems. This study describes the incidence of laryngeal penetration in 125 dysphagic children ranging in age from 7 days to 19 years who were seen over a 6-month period at The Children's Hospital in Denver, Colorado. Laryngeal penetration was identified in 60% of the study group, with 31% demonstrating deep laryngeal penetration. Of the children exhibiting deep laryngeal penetration, 85% aspirated, suggesting a strong correlation between these two events. It was noted that children exhibiting deep laryngeal penetration often began to aspirate further into their feedings. Use of extended feedings during videofluoroscopy is discussed as a diagnostic strategy in the presence of deep laryngeal penetration.
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