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Related Experiment Videos

Tracheal trauma from percutaneous tracheostomy using the Griggs method.

M Watters1, G Thorne, C Cox

  • 1Sir Humphry Davy Departmentof Anaesthesia, Bristol Royal Infirmary, Marlborough Street, Bristol BS2 8HW, UK. malandemma@msn.com

Anaesthesia
|March 7, 2002
PubMed
Summary

This study evaluated the safety of Griggs tracheostomy forceps. Findings indicate a safe margin for tracheal dilation, with pretracheal tissue force guiding application.

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Area of Science:

  • Medical Devices
  • Surgical Procedures
  • Anatomy

Background:

  • Percutaneous tracheostomy is a common procedure.
  • Ensuring safety during dilation is critical.
  • Griggs guidewire dilating forceps are used in this procedure.

Purpose of the Study:

  • To evaluate the safety margin of Griggs tracheostomy forceps.
  • To compare forces required for tracheal destruction versus dilation.
  • To assess the utility of pretracheal tissue dilation as a force guide.

Main Methods:

  • Force and distance measurements were taken during percutaneous tracheostomy on 12 cadavers.
  • Griggs guidewire dilating tracheostomy forceps with monitoring were used.
  • Measurements were converted from millivolts to force and distance using calibration tables.

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Main Results:

  • Significantly more force was needed for tracheal destruction (87.7 N) than therapeutic dilation (31.6 N) (p <0.001).
  • Less force was required for therapeutic dilation compared to pretracheal tissue dilation (31.6 N vs. 44.4 N) (p <0.05).

Conclusions:

  • Griggs tracheostomy forceps demonstrate a safe margin, making inadvertent tracheal destruction unlikely.
  • Dilation force of pretracheal tissues can serve as a practical guide for therapeutic dilation force application.