Name: ACA- Hung 4e- McCoy Laryngoscope

Description: ACA- Hung 4e- McCoy Laryngoscope

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Duration: T00H03M26S

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Upload Date: 2023-11-24T00:00:00.0000000

Transcript: Language: EN.
Segment:0 .

Segment:1 Device.
The McCoy laryngoscope is a modified Macintosh laryngoscope. It has a curved blade with a hinged tip, which flexes when a lever on the handle is depressed. The mechanism of tongue displacement and elevation of the epiglottis is similar to the Macintosh laryngoscope. The tip of the blade is inserted into the vallecula and the epiglottis is elevated indirectly by stretching the hyoepiglottic ligament.
When the hinged tip of the blade is flexed, the epiglottis may be further elevated and improved on the glottic view.
Segment:2 Preparation.
The battery and the light source of the laryngoscope should be checked for optimal condition prior to its use. A proper-sized endotracheal tube should be selected and checked. In some situations, a well-lubricated, malleable stylet may be necessary to stiffen and shape the tube as necessary.
The patient should be well-oxygenated prior to the intubation attempt. The patient's head and neck is placed in a sniffing position.
Segment:3 Technique.
The laryngoscope handle is held by the left hand and the blade is slowly advanced to the base of the tongue, which is displaced to the left of the blade. Once the epiglottis is identified, the tip of the blade is then advanced into the vallecula and the hyoepiglottic ligament is pressed.
If the glottis cannot be seen, the hinged tip of the blade can be flexed by depressing the lever on the handle. Once the glottis is visualized, the endotracheal tube is then introduced at the right corner of the mouth. Correct placement of the tracheal tube should be confirmed by end tidal CO2 and auscultation.
Segment:4 Trouble Shooting .
Although the McCoy blade has the potential to improve the glottic view in some patients with a difficult laryngoscopy, published clinical investigations have reported mixed results.
In some situations, visualization of the glottis worsens after the tip of the McCoy blade is flexed. The Eschmann tracheal introducer is particularly useful when only the epiglottis can be seen. Under these circumstances, the Eschmann introducer can be hooked underneath the epiglottis and advanced into the trachea. With the Eschmann introducer positioned at about 22 centimeters at the mouth, the endotracheal tube can then be advanced over the Eschmann introducer into the trachea.
To facilitate the advancement of the endotracheal tube over the Eschmann introducer and into the airway, the tongue and epiglottis should be gently elevated by the laryngoscope.
Segment:5 Summary.
The McCoy laryngoscope is a modified curved blade with a hinged tip, which flexes when a lever on the handle is depressed. This will help to elevate the epiglottis by stretching the hyoepiglottic ligament.
Although this will generally improve the glottic view, in some situations, visualization of the glottis worsens after the tip of the McCoy blade is flexed.

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