Related Experiment Video
Updated: Jun 16, 2026

Topical Airway Anesthesia for Awake-endoscopic Intubation Using the Spray-as-you-go Technique with High Oxygen Flow
Published on: January 13, 2017
[Anaesthesia for bronchial echoendoscopy: experience with the laryngeal mask]
Y Douadi1, H Bentayeb, S Malinowski
1Service de pneumologie, maladies infectieuses et tropicales, centre hospitalier de Saint-Quentin, 1, avenue Michel-de-l'Hospital, 02100 Saint-Quentin, France. ydou@club-internet.fr <ydou@club-internet.fr>
This study evaluated the use of a laryngeal mask for airway management during endobronchial ultrasound-guided needle aspiration. Researchers found that this approach provided a secure airway and effective oxygenation without compromising diagnostic success, potentially avoiding more invasive surgical procedures.
Area of Science:
- Respiratory medicine and endobronchial ultrasound guided transbronchial needle aspiration outcomes
- Clinical anesthesiology and airway management techniques
Background:
No prior work had resolved the optimal airway management strategy for patients undergoing prolonged endobronchial ultrasound-guided transbronchial needle aspiration. Prior research has shown that this diagnostic modality requires more time than standard bronchoscopic examinations. That uncertainty drove clinicians to seek methods balancing patient comfort with physician access. It was already known that traditional sedation protocols often struggle to maintain stability during these extended procedures. This gap motivated an investigation into alternative ventilation techniques. Anaesthesiologists frequently adapt strategies from major surgeries to address the increasing demand for minimally invasive interventions. The rising frequency of these procedures contrasts with the slower growth of available anesthesia specialists. Consequently, identifying efficient and safe airway solutions has become a priority for respiratory care units.
Purpose Of The Study:
The aim of this study was to investigate the efficacy of using a laryngeal mask for airway management during endobronchial ultrasound-guided transbronchial needle aspiration. This procedure is known to be more time-consuming than standard bronchoscopy, which often leads to increased patient distress. The researchers sought to determine if a laryngeal mask could provide a stable environment for the physician. They also wanted to assess whether this ventilation method could maintain patient comfort during the extended diagnostic process. No prior work had resolved the impact of this specific airway strategy on diagnostic success rates. The team hypothesized that this approach might reduce the necessity for more invasive surgical interventions like mediastinoscopy. By analyzing their institutional experience, the authors intended to provide evidence for improved clinical practice. This investigation addresses the growing demand for efficient management of minimally invasive respiratory procedures.
Main Methods:
The investigators conducted a retrospective analysis of clinical records to evaluate ventilation strategies. They reviewed cases involving patients who underwent diagnostic procedures within their specific respiratory unit. The team categorized participants based on the type of anesthesia and airway support received. One group utilized a laryngeal mask for ventilation, while the other received local anesthetic alone. The researchers tracked the total number of needle passes performed during each examination. They also recorded the diagnostic yield by assessing the presence of lymph node cells in the samples. Success was defined by the ability to obtain sufficient tissue for staging without requiring further surgery. Statistical comparisons were made between the two distinct management cohorts to determine procedural outcomes.
Main Results:
The strongest finding indicates that 87% of all procedures were informative for lymph node staging. Among cases using the laryngeal mask, 89% yielded successful tissue samples with a mean of 3.8 needle passes. In contrast, the local anesthesia group achieved an 86% success rate with a mean of 2.9 passes. The data demonstrate that the laryngeal mask facilitates a secure airway and maintains oxygenation throughout the procedure. Furthermore, the researchers observed that 78% of all cases, totaling 45 patients, successfully avoided the need for mediastinoscopy. The results show no reduction in diagnostic success when using the mask compared to local anesthetic. These findings highlight the feasibility of this ventilation approach for extended bronchoscopic examinations. The study provides evidence that this method supports both physician access and patient stability during complex diagnostic interventions.
Conclusions:
The authors propose that utilizing a laryngeal mask offers a reliable method for securing the airway during endobronchial ultrasound procedures. This synthesis suggests that oxygenation remains stable throughout the examination when this device is employed. The findings imply that diagnostic efficacy is not hindered by the use of this specific ventilation tool. Researchers indicate that this strategy may successfully prevent the need for more invasive surgical mediastinoscopy in a significant portion of patients. The data support the integration of this technique into routine clinical practice for complex bronchoscopic diagnostics. Implications from this review highlight the balance between patient safety and procedural success. The study confirms that airway management can be optimized without sacrificing the quality of tissue sampling. These observations provide a framework for future clinical decisions regarding sedation and ventilation in respiratory diagnostics.
Frequently Asked Questions
The researchers propose that using a laryngeal mask during endobronchial ultrasound-guided transbronchial needle aspiration allows for a secure airway and stable oxygenation. This approach maintains high diagnostic success rates, with 89% of procedures yielding informative lymph node cells, compared to 86% using local anesthesia alone.
The study utilized a laryngeal mask as the primary airway management tool. This device was compared against local anesthetic administration, which served as the alternative method for patient management during the diagnostic examinations.
A secure airway is necessary because endobronchial ultrasound-guided transbronchial needle aspiration procedures are significantly longer than conventional bronchoscopy. The authors suggest that this duration increases the risk of patient discomfort, requiring more robust ventilation support than simple sedation can provide.
The retrospective data set included 63 patients. Of these, 41 individuals received care involving a laryngeal mask, while 22 patients underwent the examination using only local anesthetic, allowing for a comparative analysis of diagnostic yields.
The researchers measured procedural success by the ability to obtain informative cells from lymph nodes. They observed a mean of 3.8 passes per procedure with the laryngeal mask, whereas local anesthesia alone resulted in a mean of 2.9 passes.
The authors propose that this airway management strategy helps avoid more invasive mediastinoscopy. They report that in 45 cases, representing 78% of the total study population, the need for this surgical intervention was successfully bypassed.
Related Concept Videos
Endoscopic Studies I: Bronchoscopy and Thoracoscopy
Bronchoscopy
Description
Bronchoscopy is a procedure that involves direct visualization of the larynx, trachea, and bronchi for diagnostic and therapeutic purposes. A flexible fiber optic or rigid bronchoscope is used to carry out the procedure. The fiber-optic bronchoscope is more frequently used due to...
Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques
Endotracheal Intubation I: Procedure
The ET tube comprises various components, including a standard adaptor to attach a bag-valve-mask (BVM) or ventilator, a cuff, a pilot balloon, and radiopaque markings along its length to measure the insertion distance. The tube sizes...
Endoscopic Studies II: Thoracocentesis
Description
Excess pleural fluid or air may accumulate in some respiratory disorders in the thoracic cavity. To treat pleural effusion, a physician conducts thoracentesis by carefully piercing the chest wall and entering...

