Airway ManagementDEVITRACH3NCT06701864
Palpation Versus Ultrasonography for Identifying the Cricothyroid Membrane of Distorted Neck-anatomy
A study testing Palpation and Ultrasound in people with Airway Management and Identification of the Cricothyroid Membrane, run by Copenhagen University Hospital, Rigshospitalet at 1 site in Denmark.
Trial summary
Participants will be anesthesiologists, who will identify the cricothyroid membrane on a silicone model of the neck with either palpation or ultrasonography. The participants can choose either the "String of pearls" or Thyroid-Airline-Cricoid-Airline (TACA) for the ultrasonographic method to be used . Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Airway Management, Identification of the Cricothyroid Membrane
- What is being tested?
- Palpation and Ultrasound
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 61 participants
- Where
- 1 siteDenmark
- Study dates
- 21 Nov 2024to 22 Nov 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Participants in a airway management course
Who cannot join
- Unwillingness to participate
Trial locations and contacts
1 site in 1 country.
About this study
Participants will be anesthesiologists, who will identify the cricothyroid membrane on a silicone model of the neck with either palpation or ultrasonography.
The participants can choose either the "String of pearls" or Thyroid-Airline-Cricoid-Airline (TACA) for the ultrasonographic method to be used .
The silicone model of the neck is distorted with with the larynx deviated to one of the sides to simulate a patient with neck pathology.
Read the detailed description
Participants will be anesthesiologists, who will identify the cricothyroid membrane on a silicone model of the neck with either palpation or ultrasonography.
The participants can choose either the "String of pearls" or Thyroid-Airline-Cricoid-Airline (TACA) for the ultrasonographic method to be used .
The silicone model of the neck is distorted with with the larynx deviated to one of the sides to simulate a patient with neck pathology.
The test persons are randomized to use other palpation or ultrasonography. All attempts are video-taped.
- Being tested
- Palpation, Ultrasound
- Keywords
- Airway Management, Ultrasound, Palpation, Cricothyroid membrane
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PalpationDiagnostic test
Identification of the cricothyroid membrane using PALPATION, a procedure used to prepare for front of neck airway access
UltrasoundDiagnostic test
Identification of the cricothyroid membrane, using ULTRASONOGRAPHY with either the "String of pearls" or TACA aproach as chosen by the participant , a procedure used to prepare for front of neck airway access
| Study group | Role | What they receive |
|---|---|---|
| Palpation | Active comparator | digital palpation used to identify the cricothyroid membrane Receives: Diagnostic Test: Palpation |
| Ultrasound | Experimental | Ultrasonography (either "String of pearls" or TACA approach) used to identify the cricothyroid membrane Receives: Diagnostic Test: Ultrasound |
What is being measured
The primary outcome is the main question the study is designed to answer.
Correct identification of the cricothyroid membrane within a minute
The fraction of correct identifications of the location of the cricothyroid membrane
Measured: Within 1 minute during procedure
Secondary outcomes (1)
Correct identification of the sagittal plane within the airway
The fraction of identifications that were within the sagittal boundaries of the trachea
Measured: Within 1 minute during procedure
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Nov 2024
- Study start21 Nov 2024
- Primary completion22 Nov 2024
- Study completion22 Nov 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Airway ManagementStudies of the same condition, open and under way.
- More trials run by Copenhagen University Hospital, RigshospitaletThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Randomised to either "palpation" or "ultrasonography" The participants are thus randomised to use either "palpation" or to use "ultrasonography" to DIAGNOSE the position of the cricothyroid membrane
- Masking
- None (open label)
- Enrolment
- 61 participants (actual)
Sponsor and investigators
- Lead sponsor
- Copenhagen University Hospital, Rigshospitalet
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Robin Lohse, Copenhagen University Hospital, Rigshospitalet
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06701864
- Sponsor's protocol ID
- F-22064259-3
- Acronym
- DEVITRACH3
- Status last verified
- Dec 2025
- First submitted
- 20 Nov 2024
- Last updated
- 9 Dec 2025
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 9 Dec 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Palpation Versus Ultrasonography for Identifying the Cricothyroid Membrane of Distorted Neck-anatomy
- ClinicalTrials.gov ID
- NCT06701864
- Acronym / sponsor ID
- DEVITRACH3 / F-22064259-3
- Keywords
- Airway Management, Ultrasound, Palpation, Cricothyroid membrane
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 61 participants (actual)
- Lead sponsor
- Copenhagen University Hospital, RigshospitaletUniversity, hospital or other
- Study start
- 21 Nov 2024 (actual)
- Primary completion
- 22 Nov 2024 (actual)
- Study completion
- 22 Nov 2024 (actual)
- First posted
- 22 Nov 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Participants will be anesthesiologists, who will identify the cricothyroid membrane on a silicone model of the neck with either palpation or ultrasonography.
The participants can choose either the "String of pearls" or Thyroid-Airline-Cricoid-Airline (TACA) for the ultrasonographic method to be used .
The silicone model of the neck is distorted with with the larynx deviated to one of the sides to simulate a patient with neck pathology.
Detailed description
Participants will be anesthesiologists, who will identify the cricothyroid membrane on a silicone model of the neck with either palpation or ultrasonography.
The participants can choose either the "String of pearls" or Thyroid-Airline-Cricoid-Airline (TACA) for the ultrasonographic method to be used .
The silicone model of the neck is distorted with with the larynx deviated to one of the sides to simulate a patient with neck pathology.
The test persons are randomized to use other palpation or ultrasonography. All attempts are video-taped.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- Randomised to either "palpation" or "ultrasonography" The participants are thus randomised to use either "palpation" or to use "ultrasonography" to DIAGNOSE the position of the cricothyroid membrane
| Arm | Type | Receives |
|---|---|---|
| Palpation | Active comparator | Diagnostic Test: Palpationdigital palpation used to identify the cricothyroid membrane |
| Ultrasound | Experimental | Diagnostic Test: UltrasoundUltrasonography (either "String of pearls" or TACA approach) used to identify the cricothyroid membrane |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Participants in a airway management course
Key exclusion criteria (1 listed)
- Unwillingness to participate
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| PalpationIdentification of the cricothyroid membrane using PALPATION, a procedure used to prepare for front of neck airway access | Diagnostic test | Palpation |
| UltrasoundIdentification of the cricothyroid membrane, using ULTRASONOGRAPHY with either the "String of pearls" or TACA aproach as chosen by the participant , a procedure used to prepare for front of neck airway access | Diagnostic test | Ultrasound |
Primary outcome
Correct identification of the cricothyroid membrane within a minute
Time frame: Within 1 minute during procedure
The fraction of correct identifications of the location of the cricothyroid membrane
1 secondary outcome
Correct identification of the sagittal plane within the airway
Time frame: Within 1 minute during procedure
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Dec 2025.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Palpation and Ultrasound in people with Airway Management and Identification of the Cricothyroid Membrane, run by Copenhagen University Hospital, Rigshospitalet at 1 site in Denmark.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 9 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Correct identification of the cricothyroid membrane within a minute (time frame: Within 1 minute during procedure). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Dec 2025.