Laryngeal Mask Airway
Laryngeal Mask Airway - Related Videos
04:56
Laryngeal Mask Airway (LMA) Placement in a Neonatal Patient Simulator Using a Non-Inflatable Supraglottic Airway (SGA)
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2023
This protocol is designed to describe a method to place and establish a supraglottic (alternative) airway during neonatal resuscitation. It can be used in situations where frontline providers cannot ventilate or endotracheally intubate neonates requiring resuscitation.
09:28
COVID-19 / Coronavirus Outbreak: Protecting The Airway - Endotracheal Intubation
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2020
In pandemic times, medical staff is becoming a key resource in fighting the infection. To achieve the best medical care, relevant techniques and procedures have to be taught to medical staff to reduce the risk of infection. COVID patients often need mechanical ventilation due to progredient respiratory insufficiency, so an endotracheal intubation becomes a critical procedure in managing these patients. This procedure has an increased risk of infection due to aerosol formation and working with...
07:45
Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
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2023
This protocol describes a serial transoral laryngoscopy approach for mice and rats that permits close-up, unobstructed video imaging of the larynx during breathing and swallowing using an optimized anesthetic regimen and finely tuned endoscopic manipulation techniques.
10:14
Object Substitution Masking
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Visual masking is a term used by perceptual scientists to refer to a wide range of phenomena in which in an image is presented but not perceived by an observer because of the presentation of a second image. There are several different kinds of masking, many of them relatively intuitive and unsurprising. But one surprising and important type of masking is called Object Substitution Masking. It has been a focus of research in vision...
08:05
Testing Tactile Masking between the Forearms
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Cited by 2 •
2016
Here we explore contralateral tactile masking between the forearms in which tactile detection thresholds are modulated by vibration applied to a remote site. The details of which remote sites have an effect can tell us about how the body is represented in the brain.
FAQs
After the device reaches the laryngeal region, inflation of its mask creates a seal around the larynx. This seal allows oxygen and anesthetic gases to pass toward the airway while the device remains above the vocal cords. Effective positioning and sealing therefore support ventilation without placing a tube through the vocal cords.
The Laryngeal Mask Airway occupies an intermediate role between the two approaches. Unlike face-mask ventilation, it provides a positioned airway interface over the laryngeal inlet. Unlike tracheal intubation, it does not pass through the vocal cords. This makes it useful when ventilation is needed without immediate placement of an endotracheal tube.
Remaining above the vocal cords permits oxygen and anesthetic gases to reach the airway while avoiding passage into the trachea. However, that position also means the device provides less protection from aspiration than a cuffed endotracheal tube. Its supraglottic location therefore supports ventilation but represents an important limitation when airway protection is required.
The mask is first kept deflated and guided through the mouth toward the laryngeal inlet. Once positioned, it is inflated to form a seal around the larynx. The device can then provide a route for oxygen and anesthetic gases and support ventilation. This sequence depends on accurate placement before inflation and use.
During general anesthesia, an LMA can provide ventilation while allowing oxygen and anesthetic gases to pass through the airway device. It offers an alternative to both face-mask ventilation and tracheal intubation. The choice is especially relevant when clinicians need a supraglottic airway approach rather than immediate placement of a tube through the vocal cords.
In emergency airway management, the device can serve as a rescue option when intubation is difficult. Its placement above the vocal cords may allow ventilation when establishing a tracheal tube has not been achieved. Although it can support effective ventilation, clinicians must account for its lower aspiration protection compared with a cuffed endotracheal tube.