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Related Experiment Videos

The anterior cricoid split in puppies.

J W Babyak1, P P Passamani, M J Sullivan

  • 1Department of Otolaryngology-Head and Neck Surgery, University of Michigan, Ann Arbor 48109-0312.

International Journal of Pediatric Otorhinolaryngology
|August 1, 1987
PubMed
Summary

An anterior cricoid split effectively treated subglottic stenosis in puppies by widening the airway. This surgical intervention prevented long-term complications in the canine model of intubation-induced airway injury.

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Area of Science:

  • Otolaryngology
  • Pediatric Surgery
  • Regenerative Medicine

Background:

  • Intubation-induced subglottic stenosis is a significant complication in neonates.
  • The canine model replicates key features of human subglottic stenosis.
  • Current treatments for subglottic stenosis have limitations.

Purpose of the Study:

  • To evaluate the acute and long-term effects of the anterior cricoid split on puppy subglottis.
  • To assess the efficacy of anterior cricoid split in a canine model of induced subglottic stenosis.
  • To investigate the airway remodeling and healing after anterior cricoid split.

Main Methods:

  • Puppies underwent intubation for 7 to 14 days to induce subglottic stenosis.
  • An anterior cricoid split procedure was performed on day 7 in some animals.

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  • Airway morphology and histology were assessed at day 14.

    • Main Results:

    • The anterior cricoid split acutely increased intralumenal cricoid surface area.
    • Animals undergoing the split showed essentially normal airways by day 14.
    • The split cartilage maintained a 'U' configuration, bridged by fibrous tissue with normal epithelium.

    Conclusions:

    • Anterior cricoid split is an effective intervention for subglottic stenosis in this model.
    • The procedure expands the airway lumen while preserving structural integrity.
    • No long-term complications were observed following the anterior cricoid split.