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Related Concept Videos

Trachea01:22

Trachea

6.1K
The trachea, commonly known as the windpipe, is a vital part of the human respiratory system. It serves as a passageway for air to travel between the larynx and the bronchi, allowing oxygen to reach the lungs. Let's explore its anatomical features, dimensions, layers of the tracheal wall, associated muscles, and the functions of its parts.
Anatomical Features:
Location: About half of the trachea is situated in the neck, anterior to the esophagus, and extends from the larynx (at the level of...
6.1K
The Bronchial Tree01:23

The Bronchial Tree

8.1K
The human bronchi and bronchial tree play a crucial role in the respiratory system, facilitating the exchange of oxygen and carbon dioxide. Let's delve into the intricate structure and functions of these respiratory components.
The trachea, commonly known as the windpipe, is a tube that connects the larynx (voice box) to the bronchi. At a point called the carina, it bifurcates into two primary bronchi. The right primary bronchus is wider, shorter, and more vertical than the left primary...
8.1K
Anatomy of Respiratory System I: Upper Respiratory Tract01:29

Anatomy of Respiratory System I: Upper Respiratory Tract

6.4K
The upper respiratory tract plays a vital role in the respiratory system, comprising several structures that facilitate air intake and prepare air for the lungs. It also serves as the first line of defense against pathogens and particles. This tract includes the nose and nasal cavity, the oral cavity, the paranasal sinuses, and the pharynx, each with specific functions and features.
Nose and nasal cavity
The nose and nasal cavity represent the main external openings of the respiratory tract....
6.4K
Anatomy of Respiratory System II: Lower Respiratory Tract01:31

Anatomy of Respiratory System II: Lower Respiratory Tract

5.1K
The lower respiratory tract is anatomically composed of several vital structures, including the larynx, trachea, bronchial tree, alveoli, lungs, and pleurae. Each component has a specific function, and all are intricately connected to ensure efficient respiration.
The Larynx
It is located between the pharynx and the trachea, acts as a passageway for air, and hosts several critical structures, such as the epiglottis, vocal cords, and glottis. The epiglottis acts as a gateway, guiding food to the...
5.1K
Microbiota of the Respiratory Tract01:29

Microbiota of the Respiratory Tract

16
The human respiratory tract, comprising the upper and lower segments, serves as a critical interface with the external environment. The upper respiratory tract (URT)—including the nostrils, sinuses, pharynx, and oropharynx—is heavily colonized by microbes, while the lower respiratory tract (LRT), composed of the larynx, trachea, bronchi, and lungs, was long thought to be sterile. However, recent molecular studies have revealed that the lungs are not devoid of microbes but act more...
16
Tracheostomy Decannulation01:21

Tracheostomy Decannulation

2.5K
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...
2.5K

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Related Experiment Video

Updated: Mar 27, 2026

Author Spotlight: Investigating the Key Factors of Obliterative Bronchiolitis After Lung Transplantation
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Author Spotlight: Investigating the Key Factors of Obliterative Bronchiolitis After Lung Transplantation

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Tracheal rhinoscleroma.

A Bigi1, M Bartolomeo1, V Costes2

  • 1Département de chirurgie cervico-faciale, centre hospitalo universitaire, hôpital Gui-de-Chauliac, 80, avenue Augustin-Fliche, 34295 Montpellier cedex 5, France.

European Annals of Otorhinolaryngology, Head and Neck Diseases
|January 16, 2016
PubMed
Summary
This summary is machine-generated.

Rhinoscleroma, a rare bacterial infection, can cause tracheal stenosis. This case highlights successful CO2 laser treatment and antibiotics for subglottic obstruction, preventing recurrence.

Keywords:
DyspnoeaRhinoscleromaTracheal stenosis

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Area of Science:

  • Infectious Diseases
  • Pulmonology
  • Otolaryngology

Background:

  • Rhinoscleroma is a chronic granulomatous disease caused by Klebsiella rhinoscleromatis.
  • Isolated tracheal involvement is uncommon, often presenting as subglottic stenosis.
  • This study details a rare case of exclusively tracheal rhinoscleroma.

Observation:

  • A 46-year-old woman presented with progressive inspiratory dyspnea.
  • Endoscopic evaluation revealed significant subglottic tracheal stenosis.
  • Histopathology showed characteristic Mikulicz cells; bacterial culture confirmed Klebsiella rhinoscleromatis.

Findings:

  • Successful management of tracheal stenosis secondary to rhinoscleroma.
  • CO2 laser ablation provided symptomatic relief of airway obstruction.
  • Long-term ofloxacin treatment was initiated.

Implications:

  • Highlights the importance of considering rhinoscleroma in unexplained tracheal stenosis.
  • Demonstrates the efficacy of combined surgical and antibiotic treatment.
  • Emphasizes the need for thorough histological and bacteriological diagnosis, even with negative cultures.