Identify the instrument in the following image.

Appeared in: DSSSB October 2024

Explanation

The instrument in the image is a linear stapler, characterized by its long, straight jaws.
This design allows the surgeon to apply one or more rows of staples in a straight line.
Linear staplers are commonly used in open abdominal and thoracic surgery to transect and close tissues or organs, such as the bowel or lung.

Option A: Endostaplers (or endoscopic staplers) are designed for minimally invasive surgery. They have a very long, thin shaft to fit through small incisions or trocars, which is different from the more robust instrument shown, which is used for open surgery.
Option C: A circular stapler has a distinctive circular head and anvil mechanism. It is used to create a circular anastomosis (connection) between two hollow structures, such as sections of the intestine.
Option D: Electrocautery is a technique, and the device (often called a Bovie pencil) uses electrical current to cut tissue or control bleeding. It does not apply mechanical staples.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of surgical instruments as background academic context rather than a clinical decision trigger.
A scrub nurse or circulating nurse must be able to quickly and accurately identify surgical instruments to ensure the smooth progression of an operation. Handing the surgeon the wrong instrument can cause delays and break the flow of the procedure.
Using the correct type of stapler is critical for patient safety. For example, using a linear stapler where a circular stapler is needed for a bowel anastomosis would fail to create a proper connection, leading to a high risk of leakage and peritonitis.
What if the procedure was a laparoscopic appendectomy instead of an open colectomy? In that case, an endostapler would be required, as its long, thin design is necessary to work through the small laparoscopic ports.

How to Approach the Question

First, carefully examine the key features of the instrument in the image. Note the shape of the working end (the jaws), the overall size, and the handle mechanism.
Observe that the instrument has long, straight jaws.
Next, consider the provided options. Evaluate each option based on your knowledge of surgical instruments.
Recall or deduce the function of each type of instrument. A 'linear' stapler implies a straight line, a 'circular' stapler implies a circle, and an 'endostapler' implies use in endoscopy/laparoscopy.
Match the visual evidence (straight jaws) with the most fitting description. The straight jaws directly correspond to the term 'Linear stapler'.
Eliminate the other options based on their distinct features and functions that do not match the image.

Concept Tested & Keywords

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E6 Gynecology Williams pp. 305-373, 304-373

Practise the full DSSSB October 2024

Attempt every question from this paper in a timed mock, then review the full solution for each one.