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Related Experiment Videos

Radiological study of the Laryngeal Mask.

P R Nandi1, J F Nunn, C H Charlesworth

  • 1Division of Anaesthesia, Clinical Research Centre and Northwick Park Hospital, Harrow, Middlesex, UK.

European Journal of Anaesthesiology. Supplement
|January 1, 1991
PubMed
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The Laryngeal Mask (LM) frequently includes the epiglottis in elderly males without causing airway issues. However, misplacements can occur undetected, highlighting the need for careful monitoring during general anesthesia.

Area of Science:

  • Anesthesiology
  • Medical Imaging
  • Otolaryngology

Background:

  • The Laryngeal Mask (LM) is a common airway management device.
  • Assessing LM positioning relative to laryngeal structures is crucial for patient safety.

Purpose of the Study:

  • To evaluate the position of the Laryngeal Mask (LM) in elderly male patients.
  • To determine the relationship between the LM cuff and the epiglottis and larynx.
  • To identify potential airway complications associated with LM placement.

Main Methods:

  • Lateral soft-tissue radiography was performed on 24 elderly male patients under general anesthesia.
  • Fiber-optic endoscopy was used in 13 patients to supplement radiographic findings.
  • Radiographic and endoscopic data were analyzed to assess LM placement and its effect on laryngeal anatomy.

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Main Results:

  • In 16 out of 24 patients, the epiglottis was found within the LM cuff without causing obstruction.
  • One instance of LM cuff backfolding was observed.
  • One case of significant LM misplacement occurred but was clinically undetected.
  • Endoscopy confirmed epiglottis inclusion and revealed characteristic distortion of laryngeal anatomy by the LM.

Conclusions:

  • Inclusion of the epiglottis within the Laryngeal Mask (LM) is a common occurrence in this patient group.
  • LM misplacements can happen without evident clinical signs of airway compromise.
  • Radiography and endoscopy are valuable tools for assessing LM position and potential anatomical impact.