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Related Experiment Videos

A novel method of measuring cricoid force.

T J Clayton1, R G Vanner

  • 1North Bristol NHS Trust, Frenchay Hospital, Frenchay Park Road, Bristol, BS16 1LE, UK.

Anaesthesia
|April 10, 2002
PubMed
Summary

Applying cricoid pressure correctly prevents gastric regurgitation. This study found that using floor scales to measure force, by aiming for a 3 kg reduction in displayed weight, is a valid and effective training method for anaesthetic assistants.

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Cricoid pressure: which hand?

Anaesthesia·2000

Area of Science:

  • Anesthesiology
  • Patient Safety
  • Medical Training

Background:

  • Cricoid pressure is crucial for preventing gastric content regurgitation during anesthesia.
  • Effective application requires a specific force, typically 30 N (3 kg) for unconscious patients.
  • Accurate force measurement during training is challenging.

Purpose of the Study:

  • To evaluate the effectiveness of using floor scales to measure applied cricoid pressure.
  • To compare this method with established training techniques.
  • To determine if floor scales provide a valid and predictable force measurement.

Main Methods:

  • Forty subjects applied cricoid pressure to a model on three separate occasions.
  • Force measurements were taken before and after practice, and using floor scales.
  • Subjects applied force until floor scales indicated a 3 kg reduction in their weight.

Main Results:

  • Subject performance in applying correct cricoid force improved after practice.
  • Using floor scales to guide force application resulted in predictable and accurate pressure.
  • The floor scale method demonstrated a significant improvement in performance.

Conclusions:

  • Floor scales offer a practical and valid tool for measuring and training cricoid pressure application.
  • This method aids anaesthetic assistants in achieving the recommended 30 N (3 kg) force.
  • Utilizing floor scales enhances the effectiveness of cricoid pressure training.

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