Identify the following instrument?

Appeared in: AIIMS Rishikesh NO - 2019

Explanation

The instrument shown is a Cusco's speculum, a type of self-retaining retractor used in gynecology.
Its characteristic features, visible in the image, are the two 'duckbill' shaped blades and a screw-lock mechanism.
The screw allows the blades to be opened and held in place, retracting the vaginal walls and freeing the examiner's hands to perform procedures like a Pap smear or IUD insertion.

Option B: A Sims' retractor (or speculum) is a handheld instrument, typically with a single blade or two blades of different sizes on opposite ends. It is not self-retaining and requires an assistant to hold it in place, unlike the instrument shown.
Option C: A Doyen retractor is a large, handheld instrument with a wide, curved blade used to retract organs and tissues during major abdominal or pelvic surgeries. Its appearance is distinctly different from the vaginal speculum shown.
Option D: Allis forceps are a type of surgical clamp with sharp, interlocking teeth used for grasping and holding tissues firmly. It is a grasping instrument, not a retractor or speculum designed for visualization.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of common surgical instruments used in gynecology as background academic context rather than a clinical decision trigger.
Nurses must accurately identify surgical instruments to ensure the correct equipment is available for procedures, which is critical for efficiency and patient safety.
Assisting in a gynecological procedure requires knowing whether a self-retaining (Cusco's) or handheld (Sims') speculum is needed, as it affects how the nurse participates.
Proper cleaning, sterilization, and storage of these instruments are essential nursing responsibilities to prevent infection.

How to Approach the Question

This is an image-based identification question.
First, carefully examine the instrument in the image. Identify its key characteristics: shape (duckbill), number of blades (two), and any special mechanisms (a screw for locking the blades open).
Note that the screw mechanism makes it 'self-retaining,' meaning it doesn't need to be held in place manually.
Next, consider each option one by one.
Recall the appearance and function of a Cusco retractor, Sims retractor, Doyen retractor, and Allis forceps.
Compare the features of the instrument in the image to the characteristics of each option. Eliminate the options that do not match.

Concept Tested & Keywords

Concept Tested: Identification of common surgical instruments used in gynecology.
Stem keywords: Identify, instrument
Lead-in keywords: Identify

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E6 Gynecology Williams p. 429-437

E6 Midwifery Obstetrics and Gynecology Nursing Sandeep Kaur p. 50-58

Practise the full AIIMS Rishikesh NO - 2019

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