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Tracheal and airway disorders
Research Guide
What is Tracheal and airway disorders?
Tracheal and airway disorders are diseases and clinical conditions that obstruct, destabilize, injure, infect, or otherwise impair the upper and lower airways—particularly the trachea—leading to compromised ventilation, airway protection, or safe airway access.
The literature on tracheal and airway disorders spans sleep-related airway collapse, difficult airway management and intubation, airway malignancy management, and pediatric infectious causes of respiratory tract disease, with 104,685 works indexed for this topic (growth over 5 years: N/A). "REVERSAL OF OBSTRUCTIVE SLEEP APNOEA BY CONTINUOUS POSITIVE AIRWAY PRESSURE APPLIED THROUGH THE NARES" (1981) established continuous positive airway pressure (CPAP) as a physiological method to reverse obstructive sleep apnoea. "Practice Guidelines for Management of the Difficult Airway" (2013) and "Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults" (2015) codified structured approaches to high-risk airway management when ventilation or tracheal intubation may fail.
Research Sub-Topics
Obstructive Sleep Apnea Pathophysiology
Researchers investigate upper airway collapse mechanisms, pharyngeal muscle function, and ventilatory control in OSA. Studies use imaging and physiology to model disease progression.
Difficult Airway Management
This area develops algorithms, devices, and training for unanticipated difficult intubations in anesthesia. Researchers validate predictors like Mallampati score and videolaryngoscopy efficacy.
Continuous Positive Airway Pressure Therapy
Studies evaluate CPAP adherence, cardiovascular outcomes, and long-term efficacy in OSA treatment. Researchers explore interface designs and telemedicine for compliance.
Tracheal Stenosis and Reconstruction
Focuses on etiology, surgical techniques, and biomaterials for benign and malignant tracheal narrowing. Researchers assess stenting, grafting, and regenerative approaches.
Pediatric Airway Disorders
This sub-topic covers laryngomalacia, subglottic stenosis, and foreign body aspiration in children. Studies emphasize endoscopic management and growth impacts.
Why It Matters
Tracheal and airway disorders matter because they directly determine whether clinicians can oxygenate and ventilate patients safely, and because chronic airway obstruction contributes to long-term cardiopulmonary morbidity that is modifiable with treatment. In sleep medicine, Marı́n et al. (2005) in "Long-term cardiovascular outcomes in men with obstructive sleep apnoea-hypopnoea with or without treatment with continuous positive airway pressure: an observational study" linked obstructive sleep apnoea-hypopnoea and its treatment status with long-term cardiovascular outcomes, making CPAP adherence a clinically consequential intervention rather than a purely symptomatic therapy. In anesthesia, emergency medicine, and critical care, difficult airway algorithms aim to prevent catastrophic “can’t intubate/can’t oxygenate” trajectories; this is operationalized through consensus guidance such as Apfelbaum et al. (2013) "Practice Guidelines for Management of the Difficult Airway" and Frerk et al. (2015) "Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults." In head and neck oncology, airway preservation can be a primary functional outcome: Forastiere et al. (2003) "Concurrent Chemotherapy and Radiotherapy for Organ Preservation in Advanced Laryngeal Cancer" reported that radiotherapy with concurrent cisplatin is superior to induction chemotherapy followed by radiotherapy or radiotherapy alone for laryngeal preservation and locoregional control, directly affecting decisions that can avoid permanent airway diversion (e.g., tracheostomy) in advanced laryngeal cancer.
Reading Guide
Where to Start
Start with the Adult Obstructive Sleep Apnea Task Force (2009) paper "Clinical Guideline for the Evaluation, Management and Long-term Care of Obstructive Sleep Apnea in Adults" because it provides a structured clinical frame for evaluation, management, and longitudinal care that helps contextualize the mechanistic and outcomes studies in the list.
Key Papers Explained
Sullivan et al. (1981) "REVERSAL OF OBSTRUCTIVE SLEEP APNOEA BY CONTINUOUS POSITIVE AIRWAY PRESSURE APPLIED THROUGH THE NARES" establishes CPAP as a direct physiological countermeasure to airway collapse, while Marı́n et al. (2005) "Long-term cardiovascular outcomes in men with obstructive sleep apnoea-hypopnoea with or without treatment with continuous positive airway pressure: an observational study" connects treatment status to long-term cardiovascular outcomes, motivating adherence and risk-based care. Senaratna et al. (2016) "Prevalence of obstructive sleep apnea in the general population: A systematic review" situates these interventions in population burden. In parallel, airway access and rescue are structured by Apfelbaum et al. (2013) "Practice Guidelines for Management of the Difficult Airway" and Frerk et al. (2015) "Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults," with prediction/classification tools anchored by Cormack and Lehane (1984) "Difficult tracheal intubation in obstetrics" and Mallampati et al. (1985) "A clinical sign to predict difficult tracheal intubation; a prospective study." For oncologic airway preservation, Forastiere et al. (2003) "Concurrent Chemotherapy and Radiotherapy for Organ Preservation in Advanced Laryngeal Cancer" provides comparative evidence tying treatment choice to preservation and control outcomes.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
For advanced study within this paper list, focus on cross-linking chronic airway collapse (obstructive sleep apnoea) with risk stratification and long-term outcomes (Marı́n et al. (2005); Senaratna et al. (2016)) and integrating these with procedural airway safety frameworks (Apfelbaum et al. (2013); Frerk et al. (2015)). A second direction is refining prediction and real-time classification of difficult intubation using the foundational constructs in Mallampati et al. (1985) and Cormack and Lehane (1984), then mapping those constructs onto guideline decision points. A third direction is aligning organ-preservation oncology goals with airway function endpoints using Forastiere et al. (2003), treating airway patency and laryngeal function as measurable outcomes rather than secondary considerations.
Papers at a Glance
In the News
Jinho Kim Receives $895K Department of Defense Grant ...
Department of Defense (DoD) for his research into “Leveraging Personalized Stem Cell Therapy to Overcome Airway Reconstruction.” The project aims to create a novel method of implanting functional b...
3D Printed Device for Babies - Rare Respiratory Disease
* Patient Privacy and HIPAA * Research News Clinical trial opens to study groundbreaking 3D printed device for babies with rare respiratory disease
New clinical trial tests 3D-printed devices for treating ...
A new clinical trial will allow researchers to study 3D-printed bioresorbable devices aimed at treating children with rare and life-threatening airway condition tracheobronchomalacia.
Toward Clinical Translation of 3D-Printed Scaffolds in Upper Airway Reconstruction: Insights, Design Considerations, and Challenges
Upper airway pathology (including the larynx and trachea) arising from malignancies, traumatic injuries, or congenital anomalies often need complex surgical interventions and significantly impact q...
MRDC seeks entrepreneurs to license innovative airway ...
Airway Management Device for Identification of Tracheal and/or Esophageal Tissue, U.S. Patent 10,980,955 Expandable Tracheostomy Tube, U.S. Provisional Patent Application 63/704,784
Code & Tools
This paper presents AVATREE, a computational modelling framework that generates Anatomically Valid Airway tree conformations and provides capabilit...
## Repository files navigation # CS 370 Pediatric Savior Airway Management Simulation Chatbot Table of Contents
AirQuant is a framework based in MATLAB primarily for extracting airway measurements from fully segmented airways of a chest CT. airquant.readthed...
## Repository files navigation # airway-geometry Scripts for processing human airway geometries for CFD simulation
In this project, we implement our method using the Pytorch library, the structure is as follows: * CoT-Unet.py : 3D CoT module. ## Dataset 1. The...
Recent Preprints
Anatomy, Airway - StatPearls - NCBI Bookshelf
Anatomic and developmental variations of the airway carry important clinical implications. The most common congenital anomaly is the tracheoesophageal fistula, frequently associated with esophageal...
Clinical and swallowing characteristics of tracheostomized patients with post-intubation acquired tracheal or laryngotracheal stenosis
Laryngotracheal stenosis Subglottic stenosis Dysphagia Risk factors ABSTRACT Objective: To investigate the clinical and swallowing profiles of patients with post-intubation tracheal or laryngotrac...
Artificial Intelligence for Predicting Difficult Airways: A Review
Airway management is a critical procedure in anesthesia, emergency medicine, and critical care. Situations involving a difficult airway, which are characterized by challenges in mask ventilation or...
Clinical spectrum and outcomes of tracheobronchial ...
The purpose of the study was to (1) outline clinical features, radiological appearances, and bronchoscopic observations that accompany foreign body aspiration of the trachea and bronchial in childr...
Multimodal imaging–guided awake transnasal fiberoptic ...
Based on these findings—specifically, the localized stenosis at the nasal cavity–nasopharynx junction and the absence of obstruction in the laryngeal and glottic regions— a fiberoptic bronchoscope–...
Latest Developments
Recent developments in tracheal and airway disorders research include the advancement of robotic systems for endotracheal intubation developed in 2024 (PMC), updated guidelines for airway management published in November 2025 by the Difficult Airway Society (ScienceDirect), and ongoing research into innovative surgical treatments for tracheal stenosis, such as airway reconstruction and intratracheal sealing devices, with recent preclinical studies in 2025 (Mount Sinai, Nature).
Sources
Frequently Asked Questions
What clinical entities are included under tracheal and airway disorders in the most-cited literature?
The most-cited core papers emphasize obstructive sleep apnoea and its treatment (e.g., Sullivan et al. (1981) "REVERSAL OF OBSTRUCTIVE SLEEP APNOEA BY CONTINUOUS POSITIVE AIRWAY PRESSURE APPLIED THROUGH THE NARES"; Adult Obstructive Sleep Apnea Task Force (2009) "Clinical Guideline for the Evaluation, Management and Long-term Care of Obstructive Sleep Apnea in Adults"), difficult airway and tracheal intubation problems (e.g., Apfelbaum et al. (2013) "Practice Guidelines for Management of the Difficult Airway"; Frerk et al. (2015) "Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults"), and laryngeal cancer management relevant to airway preservation (Forastiere et al. (2003) "Concurrent Chemotherapy and Radiotherapy for Organ Preservation in Advanced Laryngeal Cancer"). The list also includes infectious respiratory tract disease relevant to pediatric airways (van den Hoogen et al. (2001) "A newly discovered human pneumovirus isolated from young children with respiratory tract disease").
How is obstructive sleep apnoea connected to airway pathophysiology and treatment in this literature?
Obstructive sleep apnoea is framed as a disorder of upper-airway collapse during sleep that can be mechanically countered with positive pressure. Sullivan et al. (1981) in "REVERSAL OF OBSTRUCTIVE SLEEP APNOEA BY CONTINUOUS POSITIVE AIRWAY PRESSURE APPLIED THROUGH THE NARES" demonstrated reversal of obstructive sleep apnoea using CPAP applied through the nares. Marı́n et al. (2005) in "Long-term cardiovascular outcomes in men with obstructive sleep apnoea-hypopnoea with or without treatment with continuous positive airway pressure: an observational study" connected treatment status with long-term cardiovascular outcomes, supporting clinical emphasis on effective therapy.
Which methods are used to predict or classify difficult tracheal intubation?
Two highly cited bedside approaches in this list are laryngoscopic grading and pre-intubation clinical assessment. Cormack and Lehane (1984) in "Difficult tracheal intubation in obstetrics" classified difficult intubation into four grades based on the view obtainable at laryngoscopy. Mallampati et al. (1985) in "A clinical sign to predict difficult tracheal intubation; a prospective study" evaluated a clinical sign intended to predict difficult tracheal intubation in a prospective design.
How do major guidelines structure management of an unanticipated difficult airway?
Guidelines in this list focus on standardized decision-making and escalation pathways when mask ventilation or tracheal intubation is difficult or fails. Apfelbaum et al. (2013) "Practice Guidelines for Management of the Difficult Airway" describes systematically developed recommendations intended to assist practitioners and patients in making decisions, while allowing adaptation to local constraints. Frerk et al. (2015) "Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults" provides a dedicated framework for unanticipated difficult intubation in adults, emphasizing planned steps rather than improvised responses.
Which paper provides prevalence synthesis for obstructive sleep apnea in the general population?
Senaratna et al. (2016) "Prevalence of obstructive sleep apnea in the general population: A systematic review" is the prevalence-focused synthesis among the top-cited papers listed. As a systematic review, it is designed to aggregate and compare prevalence estimates across studies rather than report outcomes from a single cohort. Its position among the most-cited works reflects the centrality of population burden estimation for airway-related sleep disorders.
Which high-impact evidence links airway-related cancer treatment choices to organ (airway) preservation?
Forastiere et al. (2003) "Concurrent Chemotherapy and Radiotherapy for Organ Preservation in Advanced Laryngeal Cancer" directly evaluates organ preservation as a treatment outcome in advanced laryngeal cancer. The abstracted conclusion states that radiotherapy with concurrent cisplatin is superior to induction chemotherapy followed by radiotherapy or radiotherapy alone for laryngeal preservation and locoregional control. This evidence informs treatment selection when maintaining laryngeal function and avoiding permanent airway diversion are clinical priorities.
Open Research Questions
- ? How can difficult-airway prediction be improved beyond traditional bedside tests such as the Mallampati assessment and Cormack–Lehane laryngoscopic grading while remaining practical for routine use (Mallampati et al. (1985); Cormack and Lehane (1984))?
- ? Which components of difficult-airway algorithms most strongly reduce progression to failed oxygenation during unanticipated difficult intubation, as operationalized in "Practice Guidelines for Management of the Difficult Airway" (2013) and "Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults" (2015)?
- ? In obstructive sleep apnoea-hypopnoea, which patient subgroups derive the greatest long-term cardiovascular benefit from CPAP treatment status as examined in "Long-term cardiovascular outcomes in men with obstructive sleep apnoea-hypopnoea with or without treatment with continuous positive airway pressure: an observational study" (2005)?
- ? What treatment sequencing and selection criteria maximize both laryngeal preservation and locoregional control in advanced laryngeal cancer, given the superiority statement for concurrent cisplatin-radiotherapy in "Concurrent Chemotherapy and Radiotherapy for Organ Preservation in Advanced Laryngeal Cancer" (2003)?
- ? How should clinicians integrate population-level prevalence synthesis (Senaratna et al. (2016) "Prevalence of obstructive sleep apnea in the general population: A systematic review") into screening thresholds and long-term management pathways (Adult Obstructive Sleep Apnea Task Force (2009) "Clinical Guideline for the Evaluation, Management and Long-term Care of Obstructive Sleep Apnea in Adults")?
Recent Trends
Within the provided corpus signals, the topic remains dominated by high-citation, practice-defining works in obstructive sleep apnoea management and difficult airway algorithms, alongside organ-preservation strategies in laryngeal cancer.
The topic’s scale is large (104,685 works indexed; 5-year growth: N/A), and the most-cited items include both consensus guidance (Adult Obstructive Sleep Apnea Task Force "Clinical Guideline for the Evaluation, Management and Long-term Care of Obstructive Sleep Apnea in Adults"; Apfelbaum et al. (2013) "Practice Guidelines for Management of the Difficult Airway"; Frerk et al. (2015) "Difficult Airway Society 2015 guidelines for management of unanticipated difficult intubation in adults") and foundational clinical predictors (Cormack and Lehane (1984); Mallampati et al. (1985)).
2009In sleep medicine, the trajectory from physiological reversal (Sullivan et al. ) to long-term outcomes (Marı́n et al. (2005)) and population burden synthesis (Senaratna et al. (2016)) reflects a shift from proving airway mechanics to quantifying downstream risk and prevalence for health-system planning.
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