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Comparison of GlideScope Specific Stylet to Malleable Stylet for GlideScope Intubation

This study has been completed.
Information provided by:
Lawson Health Research Institute Identifier:
First received: February 9, 2007
Last updated: October 15, 2008
Last verified: October 2008

The GlideScope video laryngoscope (Verathon) is an intubating device that uses a high-resolution camera embedded into a plastic laryngoscope blade. An LED provides illumination. The GlideScope often provides a good laryngoscopic view, but passing the endotracheal tube (ETT) through the vocal cords is sometimes difficult. Because of the 60 degree anterior curvature of the GlideScope's blade, ETT's must have stylets inserted so that the ETT distal tip can be positioned anteriorly. Various authors have recommended different angles of the ETT to optimally place it into the trachea. Previous study demonstrated that 90 degree sharp bend was both faster and subjectively easier in a heterogeneous group of intubators. With the introduction of a rigid GlideScope Specific Stylet by the manufacturer, the question arises as to the the best configuration of stylet for the ETT. Therefore, this prospective, randomized, single-blinded trial is proposed.

The null hypothesis is that there will be no difference between the GlideScope Specific Stylet and the standard malleable stylet.

Condition Intervention
Intubation, Endotracheal Device: GlideScope Specific Stylet

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Outcomes Assessor)
Primary Purpose: Health Services Research
Official Title: Comparison of GlideScope Specific Stylet to Malleable Stylet for GlideScope Intubation

Further study details as provided by Lawson Health Research Institute:

Primary Outcome Measures:
  • Duration of Intubation [ Time Frame: Timed intubation ]

Secondary Outcome Measures:
  • Operator Satisfaction [ Time Frame: Post intubation ]

Enrollment: 70
Study Start Date: January 2007
Study Completion Date: May 2007
Primary Completion Date: May 2007 (Final data collection date for primary outcome measure)
  Show Detailed Description


Ages Eligible for Study:   18 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Any adult patient scheduled for elective surgery.
  • ETT is indicated for the procedure in the opinion of the attending anesthesiologist.
  • operator who has performed ≥ 10 GlideScope intubations.

Exclusion Criteria:

  • GlideScope contraindicated in the opinion of the attending anesthesiologist.
  • known cervical spine abnormalities.
  • known or probable difficult airways.
  • rapid sequence induction.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00434720

Canada, Ontario
London Health Sciences Center
London, Ontario, Canada, N6G 1Z7
Sponsors and Collaborators
Lawson Health Research Institute
Principal Investigator: Timothy P Turkstra, M. Eng, MD University of Western Ontario, London Health Sciences Center
  More Information

Responsible Party: Timothy Turkstra, University of Western Ontario Identifier: NCT00434720     History of Changes
Other Study ID Numbers: R-06-490
Study First Received: February 9, 2007
Last Updated: October 15, 2008

Keywords provided by Lawson Health Research Institute:
Stylet processed this record on August 22, 2017