An interventional study of Identification of the cricothyroid membrane in Cricothyroid Membrane, sponsored by SMG-SNU Boramae Medical Center. Completed at 1 site in South Korea. Open to female participants aged 19 Years and older. Per ClinicalTrials.gov, last updated 2025-12-11.
Sponsored by SMG-SNU Boramae Medical Center · Not applicable, Interventional, and Other
Cricothyroidotomy is an emergency rescue technique to secure the airway in a 'Can't intubate, Can't Oxygenate' (CICO) situation. The cricothyroid membrane (CTM) is the target site of cricothyroidotomy, and accurate identification of the CTM is essential for successful cricothyroidotomy. In this study, the investigators compare patient positions (neck extension vs. modified ramped position) in terms of the success rate for identifying the CTM in obese patients.
SMG-SNU Boramae Medical Center is the lead sponsor of 38 studies on the registry; 6 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
The cricothyroid membrane is identified in a neck extended position.
Other: Identification of the cricothyroid membrane
The cricothyroid membrane is identified in a modified ramped position.
Other: Identification of the cricothyroid membrane
The cricothyroid membrane is identified using a laryngeal handshake technique in different patient positions.
Success rate for the correct identification of the cricothyroid membrane
After identifying the cricothyroid membrane using a laryngeal handshake technique in different head positions, an assessor evaluates the correctness of its localization using ultrasound.
Time frame: Immediately after identifying the cricothyroid membrane using a laryngeal handshake technique
Duration for identifying the cricothyroid membrane
Time taken to locate the cricothyroid membrane is checked.
Time frame: At 90 seconds after administering neuromuscular blockade
Distances between the center of the actual and perceived cricothyroid membrane
Distances between the center of the actual and perceived cricothyroid membrane is measured using ultrasound.
Time frame: Immediately after identifying the cricothyroid membrane using a laryngeal handshake technique
Perceived difficulty during cricothyroid membrane identification
Anatomical difficulty perceived by the anesthesiologists during cricothyroid membrane identification is assessed (1, very easy; 2, easy; 3, moderate; 4, difficult; and 5, very difficult).
Time frame: At 5 minutes after identifying the cricothyroid membrane using a laryngeal handshake technique
This study is completed, as verified in Dec 2025. You cannot join it, but the record below documents what was studied.
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SMG-SNU Boramae Medical Center