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Related Concept Videos

Tracheostomy Decannulation01:21

Tracheostomy Decannulation

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Tracheostomy decannulation is a significant milestone in the liberation of mechanically ventilated patients. Despite its importance, there is no universally accepted protocol for this procedure. This demands an evidence-based, individualized approach.
Description of the Procedure
Decannulation refers to the permanent removal of the tracheostomy tube, signaling the resolution of the condition that initially necessitated the tracheostomy. The process requires a well-coordinated interplay between...
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Trachea01:22

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Related Experiment Video

Updated: May 4, 2026

Heterotopic and Orthotopic Tracheal Transplantation in Mice used as Models to Study the Development of Obliterative Airway Disease
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Tracheal reconstruction in a canine model.

Megan W Wood1, Sean V Murphy, Xin Feng

  • 1Department of Otolaryngology, Wake Forest Baptist Health, Winston Salem, North Carolina, USA.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|December 25, 2013
PubMed
Summary

Single-stage tracheal replacement using stem cell-coated scaffolds failed in dogs due to graft breakdown. Further research needs more robust scaffolds for improved survival and stem cell differentiation in tracheal regeneration.

Keywords:
allograftcanine modelstem celltracheal reconstructiontracheal replacementtracheal stenosis

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Surgical Innovation

Background:

  • Tracheal reconstruction shows promise with stem cell-based engineered tissues.
  • Current methods aim for single-stage stem cell-based tracheal replacement.

Purpose of the Study:

  • To evaluate the feasibility of a single-stage stem cell-based tracheal replacement in a canine model.
  • To assess the efficacy of adipose-derived stem cells in tracheal regeneration.

Main Methods:

  • A prospective feasibility study was conducted using 5 healthy male beagles.
  • Decellularized canine tracheas were implanted, with 4 grafts seeded with adipose-derived stem cells and 1 control graft implanted cell-free.
  • All procedures were performed in a single surgical stage.

Main Results:

  • Five of six planned surgeries were completed.
  • All animals experienced airway distress and required euthanasia approximately one week postoperatively.
  • Tracheal grafts demonstrated malacia and structural compromise.

Conclusions:

  • Minimal postoperative inflammation and rejection were observed in the canine model.
  • Graft breakdown compromised airways, leading to early euthanasia.
  • Future studies require more robust scaffolds for improved survival and stem cell differentiation in single-stage tracheal regeneration.