Patient Positions for Locating the Cricothyroid Membrane

SMG-SNU Boramae Medical Center116 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

OTHER

Masking

SINGLE

Enrollment

116

Conditions

Cricothyroid Membrane

Interventions

Identification of the cricothyroid membraneOTHER

The cricothyroid membrane is identified using a laryngeal handshake technique in different patient positions.

Eligibility

Sex: FEMALEMin age: 19 Years

Medical Language ↔ Plain English

Inclusion Criteria: * body mass index \>30 kg/m2 Exclusion Criteria: * anatomical abnormalities or pathologies of the neck * a history of neck surgery * cervical spine disorders * skin lesions on the neck

Locations (1)

SMG-SNU Boramae Medical Center

Seoul, Select State/Province, South Korea

Outcomes

Primary Outcomes

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

Secondary Outcomes

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

Data from ClinicalTrials.gov

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