SureCRIC Standardized Patient Study

The study is a two-arm, open-label study involving users - largely licensed paramedics or combat medics - identifying the cricothyroid membranes on healthy volunteers. The Control Group will perform cricothyroid membrane identification on healthy male and female volunteers of varying heights, weights, and BMI's with the standard, freehand approach. The Experimental Group will perform cricothyroid membrane identification on the volunteers with the help of the SureCRIC. An expert verifier (senior otolaryngologist) will verify correct cricothyroid membrane identification and will not be blinded in order to reduce any error that may be introduced by SureCRIC removal and subsequent skin movement. The primary endpoint is a pass/fail assessment for cricothyroid membrane identification. The main secondary endpoint is time to cricothyroid membrane identification. The study design was recommended by FDA. The study, per FDA guidance, is not designed for statistical comparisons and only descriptive statistics are provided.

Participants (Users):

Inclusion criteria

• Paramedic or military combat medic
• Trained to perform a cricothyrotomy

Exclusion criteria

• Current or former instructor of cricothyrotomy, airway management, or anatomy
• Experience performing cricothyrotomy on a patient in the last 6 months
• Training on cricothyrotomy in the last 3 months
• Previous or current participation in a study related to cricothyrotomy
• Any condition or physical impairment that limits dexterity and/or tactile feedback
• Performed two or more cricothyrotomies on live humans
• Previous exposure to the SureCRIC

Healthy Volunteers (Standardized Patients):

Inclusion criteria

• Less than 10th percentile height female
• 50th percentile height female
• Greater than 90th percentile height female
• Less than 10th percentile height male
• 50th percentile height male
• Greater than 90th percentile height male

Exclusion criteria

• Previous exposure to the SureCRIC
• Age under 18 or over 60
• Any skin condition including, but not limited to, eczema and hives
• Skin that is thin, fragile, sensitive and/or prone to redness or irritation including skin that maintains a red, irritated appearance after the light application of pressure
• Easy bruising or use of any blood thinning medication (including aspirin)
• Beard on the neck
• Use of a steroid medication by mouth or in a topical formulation like a cream or ointment
• Any of the following chronic conditions: chronic kidney disease, chronic liver disease, coagulation disorders such as hemophilia or von Willebrand disease, low or dysfunctional platelets (e.g., thrombocytopenia), leukemia, Cushing's syndrome, Ehlers Danlos syndrome, celiac disease, any condition that causes easy bruising or sensitive or fragile skin.
• Previous neck surgery, previous neck trauma, thyroid mass or enlargement, or other neck abnormalities
• Any condition that would make lying supine or without a pillow painful or impossible