To Determine the Appropriate Depth an EMT Should Insert a Catheter

question 1

Multiple Choice

To determine the appropriate depth an EMT should insert a catheter tip into a tracheostomy tube in order to clear a blocked airway,the EMT should:

• A) measure from the stoma to the carina.
• B) measure against the length of the obturator.
• C) insert the catheter until the tip is no longer visible.
• D) multiply the internal diameter of the tracheal tube by 10.

---

Definitions:

Phi Phenomenon

An optical illusion of perceiving continuous motion between separate objects viewed in rapid succession.

Flashing Lights

Rapid or repeated blinking of light that can draw attention or signal an alert.

Two-Dimensional Image

A flat representation of a visual object, with height and width but no depth, perceived through mediums like paper or screen.

Phi Phenomenon

A visual illusion where stationary objects shown in rapid succession appear to be moving.