Now Available: Final Rule for FDAAA 801 and NIH Policy on Clinical Trial Reporting

Ultrasound Examination Versus Palpation to Locate the Cricothyroid Membrane

This study has been completed.
Information provided by (Responsible Party):
Michael Seltz Kristensen, Rigshospitalet, Denmark Identifier:
First received: November 24, 2012
Last updated: November 23, 2013
Last verified: November 2013
Anesthesiologists get a course on localizing the cricothyroid membrane on a human using ultrasonography. Thereafter their ability to localize the cricothyroid membrane with either palpation or ultrasonography, in a randomised fashion, is tested.

Focus: Localizing the Cricothyroid Membrane Before Airway Management

Study Type: Observational
Study Design: Observational Model: Case-Crossover
Time Perspective: Prospective
Official Title: Comparison of Ultrasound Examination and Palpation to Locate the Cricothyroid Membrane - a Randomized Study

Resource links provided by NLM:

Further study details as provided by Rigshospitalet, Denmark:

Primary Outcome Measures:
  • rate of success of localizing the cricothyroid membrane with ultrasound and palpation [ Time Frame: december 2012 ] [ Designated as safety issue: No ]
    the rate of success is measured

Secondary Outcome Measures:
  • time to localise the cricothyroid membrane with ultrasonography and palpation [ Time Frame: december 2012 ] [ Designated as safety issue: No ]
    time measure for both ultrasonographic and palpation method

Estimated Enrollment: 44
Study Start Date: November 2012
Study Completion Date: December 2012
Primary Completion Date: December 2012 (Final data collection date for primary outcome measure)
The group using palpation as primary attempt at localizing the cricothyroid membrane
The group using ultrasound for their primary approach to localizing the cricothyroid membrane

Detailed Description:

The ability to localize the cricothyroid membrane on patients before airway management is crucial in order to be able to follow the difficult airway algorithms.

Studies have show a high failure rate when anesthesiologists rely on palpation.

In this study Anesthesiologists get an e-learning course, get literature to study , and get a theoretical course and a hands-on course in using ultrasound for localizing the cricothyroid membrane. . Thereafter their ability to localize the cricothyroid membrane with either palpation or ultrasonography, in a randomised fashion, is tested.


Ages Eligible for Study:   Child, Adult, Senior
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population

Inclusion Criteria:

  • being an anesthesiologist attending our airway management course

Exclusion Criteria:

  • unwillingness to participate
  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: NCT01735760

Rigshospitalet, Denmark
Copenhagen, Denmark, 2100
Sponsors and Collaborators
Rigshospitalet, Denmark
  More Information

Responsible Party: Michael Seltz Kristensen, M.D., Rigshospitalet, Denmark Identifier: NCT01735760     History of Changes
Other Study ID Numbers: US-MC-001 
Study First Received: November 24, 2012
Last Updated: November 23, 2013
Health Authority: Denmark: The Regional Committee on Biomedical Research Ethics

Keywords provided by Rigshospitalet, Denmark:
airway management
cricothyroid membrane processed this record on October 26, 2016