OSSSC Nursing Officer…: What is the instrument shown below?

OSSSC Nursing Officer-2021

Medical & Surgical Nursing

Easy

Appeared in: OSSSC Nursing Officer-2021

Explanation

The instrument shown is a Trousseau Tracheal Dilator, identified by its unique features.
It has scissor-like handles, a ratchet lock to keep it open, and two short, blunt, outwardly curved blades.
This design is specifically for gently opening and holding a tracheostomy stoma patent, preventing it from closing.
It is an essential tool for emergency airway management in patients with a tracheostomy, particularly during accidental decannulation or tube changes.

Option A: Urethral dilators (or sounds) are long, thin, solid instruments used to stretch the urethra. They do not have the scissor-like, spreading blade mechanism seen in the image.
Option C: An aneurysm needle is a fine, delicate instrument with a curved tip and an eyelet used for passing ligatures around blood vessels. Its appearance is completely different from the robust, dilating instrument shown.
Option D: This option is incorrect because the instrument is clearly identifiable as a Tracheal Dilator based on its specific design and function.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of surgical instruments used in respiratory care as background academic context rather than a clinical decision trigger.
A primary nursing responsibility is to ensure emergency tracheostomy equipment is always at the bedside. This includes a tracheal dilator, a spare tracheostomy tube of the same size, one size smaller, an obturator, suction equipment, and an Ambu bag.
In the event of accidental decannulation, the nurse's immediate action is to use the tracheal dilator to maintain the stoma's patency, call for help, and prepare for reinsertion of the tracheostomy tube.
What if? If a tracheal dilator is not available during an accidental decannulation, the stoma can quickly begin to close, making re-intubation difficult and potentially leading to a life-threatening loss of airway. The nurse may need to use a hemostat or even gloved fingers to attempt to keep the stoma open.

How to Approach the Question

First, carefully examine the image of the instrument, paying close attention to its key components: the handles, the joint/lock, and the tips (blades).
Note the scissor-like finger rings, the ratchet lock in the middle, and the short, blunt, curved tips designed to spread apart.
Consider the function implied by this design. The blunt, spreading tips suggest a dilating function, and the lock suggests a need to hold something open.
Evaluate each option against your visual analysis. 'Urethral dilator' and 'Aneurysm needle' describe instruments with very different structures and purposes.
Conclude that the instrument's features are perfectly matched to the description and function of a 'Tracheal dilator'.

Concept Tested & Keywords

Concept Tested: Identification of surgical instruments used in respiratory care.
Stem keywords: instrument, shown
Lead-in keywords: What is

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