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Related Experiment Video

Updated: Jul 8, 2026

Laryngeal Mask Airway (LMA) Placement in a Neonatal Patient Simulator Using a Non-Inflatable Supraglottic Airway (SGA)
04:56

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A multicenter study comparing the ProSeal and Classic laryngeal mask airway in anesthetized, nonparalyzed patients.

Joseph Brimacombe1, Christian Keller, Bernd Fullekrug

  • 1University of Queensland, Cairns Base Hospital, Cairns, Australia. jbrimacombe@austarnet.com.au

Anesthesiology
|January 31, 2002
PubMed
Summary

The Laryngeal Mask Airway (LMA) is quicker to insert than the ProSeal LMA (PLMA), but the PLMA provides a better seal and easier orogastric tube placement. Both devices had similar complication and sore throat rates.

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Area of Science:

  • Anesthesiology
  • Airway Management
  • Medical Devices

Background:

  • Comparison of the ProSeal Laryngeal Mask Airway (PLMA) and the Classic Laryngeal Mask Airway (LMA).
  • Evaluation of key performance metrics including insertion, seal efficacy, and patient outcomes.
  • Study conducted in nonparalyzed adult patients undergoing general anesthesia.

Purpose of the Study:

  • To compare the PLMA and LMA in terms of insertion success and time.
  • To assess the efficacy of the seal, anatomic position, and orogastric tube insertion.
  • To evaluate intraoperative complications and postoperative sore throat incidence.

Main Methods:

  • Randomized controlled trial involving 384 nonparalyzed adult patients (ASA physical status I-II).
  • Patients were allocated to either PLMA or LMA for airway management.
  • Orogastric tube placement was randomized in 50% of patients; data collected by blinded and unblinded observers.

Main Results:

  • LMA showed higher first-attempt insertion success (91% vs. 82%) and quicker insertion times (31s vs. 41s).
  • PLMA demonstrated a more effective seal (27 cm H2O vs. 22 cm H2O) and facilitated more successful and quicker orogastric tube insertion (88% vs. 55%).
  • Both devices had similar rates of total intraoperative complications and postoperative sore throat.

Conclusions:

  • The LMA is easier and faster to insert, while the PLMA offers a superior seal and improved orogastric tube placement.
  • No significant differences were observed in overall intraoperative complications or postoperative sore throat between the PLMA and LMA.
  • Device choice may depend on specific clinical priorities, such as ease of insertion versus seal quality and orogastric tube facilitation.