Cu-T 380A is the intrauterine device of choice under the National Family Planning Programme. Its mechanism of action is primarily through:

• A Inhibition of ovulation via progestogen effect
• B Interference with sperm motility and fertilization, and prevention of implantation ✓
• C Thickening of cervical mucus only
• D Endometrial atrophy preventing nidation

Explanation

Copper IUDs (Cu-T 380A) act primarily through interference with sperm motility and viability (copper ions are spermicidal), prevention of fertilization, and creating a hostile endometrial environment. They do not inhibit ovulation. The Cu-T 380A is highly effective with a failure rate of <1% per year and can be used for up to 10 years. It is also approved as emergency contraception if inserted within 5 days of unprotected intercourse.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.