Question:
Murphy's eye is seen in:
Murphy's eye is seen in:
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A side-wall vent hole near the tip of a breathing tube.
Updated On: Jun 23, 2026
- Macintosh laryngoscope
- Endotracheal tube
- LMA
- Flexible laryngoscope
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The Correct Option is B
Solution and Explanation
Step 1: The Murphy eye is the named term for a small hole on the side wall, near the tip, of most endotracheal tubes (ETTs).
Step 2: Its purpose is to act as a vent, so that if the main distal opening (bevel) of the tube becomes occluded against the tracheal wall or by secretions, gas can still pass through this side hole and the airway is not completely obstructed.
Step 3: Because this feature belongs to the endotracheal tube, the answer is the ETT. A Macintosh laryngoscope, an LMA and a flexible laryngoscope do not have a Murphy eye.
Step 2: Its purpose is to act as a vent, so that if the main distal opening (bevel) of the tube becomes occluded against the tracheal wall or by secretions, gas can still pass through this side hole and the airway is not completely obstructed.
Step 3: Because this feature belongs to the endotracheal tube, the answer is the ETT. A Macintosh laryngoscope, an LMA and a flexible laryngoscope do not have a Murphy eye.
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