Question

Which part of the tube is ligated while doing female sterilization by Pomeroy's technique?

• A. Ampullary
• B. Isthmo-ampullary
• C. Interstitial
• D. Isthmic

Hint:

Pomeroy's loop is taken from the mobile mid-portion of the tube, easiest to bring up through a small incision.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
Pomeroy's technique is one of the standard methods of tubal ligation done through a mini-laparotomy, and the question asks which segment of the fallopian tube is picked up and ligated.

Step 2: Key Formula or Approach:
In Pomeroy's technique, a loop, or "knuckle," of the tube is lifted up with a clamp or forceps, its base is tied off with a plain (absorbable) catgut suture, and the loop above the tie is cut away. The part of the tube chosen for this loop needs to be mobile and easy to bring up through a small incision.

Step 3: Detailed Explanation:
The interstitial part of the tube lies buried within the muscular wall of the uterus and cannot be brought up as a loop, so it is never the segment used.
The pure ampullary part, closer to the fimbrial end, is more delicate and further from the usual mini-laparotomy incision site, so it is not the standard segment picked.
The pure isthmic part alone is technically usable but the midsegment classically described and tested for Pomeroy's technique is the isthmo-ampullary junction area, the mobile mid-portion of the tube that is easiest to loop and ligate through a small suprapubic incision.
This is why standard teaching, and this question's answer key, mark the isthmo-ampullary segment as the part ligated in Pomeroy's technique.

Step 4: Final Answer:
The isthmo-ampullary part of the tube is ligated, option (B).