Question

Identify correct function of following IUDs:

• A. Lippes loop - It attracts the macrophages stimulating them to accumulate in the uterine cavity.
• B. Cu-T - It delays pregnancy for longer period.
• C. Cu 7 - Makes the uterus unsuitable for implantation.
• D. LNG-20 - Suppresses sperm motility

Hint:

Each IUD type works in a different way: non-medicated, copper releasing or hormone releasing. Match each device with its true action.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept
IUDs are of three kinds: non-medicated (Lippes loop), copper releasing (Cu-T, Cu 7, Multiload 375) and hormone releasing (Progestasert, LNG-20).

Step 2: Lippes loop
It is a non-medicated device. As a foreign body it attracts macrophages that gather in the uterine cavity and engulf sperms. This matches option A.

Step 3: Other devices
Cu ions from Cu-T and Cu 7 reduce sperm motility and fertilising capacity.
LNG-20 makes the endometrium unsuitable for implantation and the cervical mucus hostile to sperm.

Step 4: Conclusion
Only the first pair is stated correctly.

Final Answer:
The Lippes loop draws macrophages into the uterine cavity, which is the correct pair. \[ \boxed{\text{(A) }\text{Lippes loop - It attracts the macrophages stimulating them to accumulate in the uterine cavity.}} \]