Tracheal Stenosis
Tracheal Stenosis - Related Videos
08:26
Design of a Biocompatible Drug-Eluting Tracheal Stent in Mice with Laryngotracheal Stenosis
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Cited by 13 •
2020
Laryngotracheal stenosis results from pathologic scar deposition that critically narrows the tracheal airway and lacks effective medical therapies. Using a PLLA-PCL (70% poly-L-lactide and 30% polycaprolactone) stent as a local drug delivery system, potential therapies aimed at decreasing scar proliferation in the trachea can be studied.
02:24
Tracheal Cannulation in Rabbit Model: A Procedure to Insert Tracheal Cannula into the Rabbit Trachea
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2025
This video demonstrates the surgical creation of an opening in the rabbit trachea to insert a tracheal cannula for artificially ventilating the lungs.
04:53
Surgical Management of Meatal Stenosis with Meatoplasty
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Cited by 13 •
2010
Meatoplasty, surgical management of meatal stenosis.
04:50
Direct Tracheal Instillation of Solutes into Mouse Lung
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Cited by 54 •
2010
Intratracheal instillations deliver solutes directly into the lungs. This procedure targets the delivery of the instillate into the distal regions of the lung, and is therefore often incorporated in studies aimed at studying alveoli. We provide a detailed survival protocol for performing intratracheal instillations in mice.
10:20
In vitro Measurements of Tracheal Constriction Using Mice
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Cited by 15 •
2012
Transgenic mice have been extremely useful in ascribing physiological function to genes. As such, research in general, and functional studies of airway, in particular, have undergone a remarkable shift toward murine models. Here we provide protocols for in vitro trachea constriction studies to evaluate smooth muscle function in murine airway.
FAQs
Airflow resistance rises as the tracheal passage becomes narrower, so even a modest reduction in diameter can have important consequences for ventilation. The degree of narrowing helps determine severity, while the lesion’s location affects which portion of the airway is limiting flow. These two anatomical variables help explain differences in breathlessness, cough, and stridor among patients.
Tracheal stenosis can reflect scar tissue after injury, inflammation, a congenital airway abnormality, tumor growth, or pressure from outside the trachea. These categories distinguish acquired from congenital disease and indicate that narrowing may arise from changes within the airway wall, a developing lesion, or external compression. Post-intubation injury is specifically recognized as a common acquired pathway.
Restricted airflow can produce noisy breathing called stridor, along with coughing and breathlessness. If narrowing becomes substantial, less air can pass between the larynx and bronchi, potentially impairing ventilation. In respiratory biology, this connects an anatomical change in the trachea with altered air movement and observable symptoms. Symptom severity therefore provides important clinical context when evaluating the disorder.
Computed tomography, bronchoscopy, and pulmonary function testing provide complementary views of the disorder. CT helps assess the airway anatomically, bronchoscopy permits direct evaluation of the tracheal lumen, and pulmonary function testing examines the functional effect on breathing. Using these approaches together can relate the narrowing’s structure and location to its impact on airflow, supporting decisions about management.
Clinical evaluation first characterizes the narrowing with imaging, airway inspection, and functional testing. The resulting information can establish how severe the restriction is and where it occurs, which matters when considering airway dilation, stent placement, or surgical reconstruction. This sequence links biological assessment to intervention without treating every case as anatomically identical.
Airway dilation, stent placement, and surgical reconstruction represent different ways to address the narrowed passage. Dilation enlarges the airway, a stent supports the airway lumen, and reconstruction surgically addresses the affected tracheal segment. The choice among these approaches is relevant because stenosis varies in degree and location, so treatment must correspond to the anatomy and the extent of airflow limitation.