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[Comparative study of two methods for laryngeal mask insertion].

C Añez1, J M Serra, L Sanjuán

  • 1Servicio de Anestesiología, Reanimación y Tratamiento del Dolor, Hospital de Sant Pau i Santa Tecla de Tarragona. canez@galenics.com

Revista Espanola De Anestesiologia Y Reanimacion
|November 24, 1999
PubMed
Summary

Comparing laryngeal airway mask insertion techniques, this study found no significant differences between uninflated and partially inflated methods. Partially inflated insertion may be beneficial when the uninflated technique fails.

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Area of Science:

  • Anesthesiology
  • Airway Management

Background:

  • Laryngeal airway masks are crucial for airway management during general anesthesia.
  • Manufacturer recommendations vary regarding mask inflation before insertion.

Purpose of the Study:

  • To compare the efficacy and safety of two laryngeal mask insertion techniques: uninflated versus partially inflated (75% volume).

Main Methods:

  • A randomized study of 60 patients undergoing outpatient surgery under general anesthesia.
  • Patients received either uninflated (Brain's technique) or partially inflated laryngeal masks (sizes 3 or 4).
  • Key metrics included ease of insertion, ventilation adequacy, hemodynamic changes, and complications.

Main Results:

  • No statistically significant differences were observed between the uninflated and partially inflated laryngeal mask insertion methods.

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  • Predictive criteria for difficult airway management did not correlate with insertion difficulty.
  • One case required a switch to the inflated technique when uninflated insertion failed.

    • Conclusions:

    • Both uninflated and partially inflated laryngeal mask insertion techniques are comparable in effectiveness.
    • Partially inflated insertion offers a viable alternative when the uninflated method is unsuccessful.