Question

what is clear cut difference between medicatedcand non medicated IUD

Answer 1

7.1 Types of IUDs

Intrauterine device (IUD) is a small, flexible plastic frame to be inserted into the uterine cavity.

Inert or non-medicated

These devices are made of plastic or stainless steel only. Lippes loop made of plastic (polyethylene) impregnated with barium sulphate is still used in many parts of the world. Stainless steel rings are widely used in China only.

Copper IUDs

Copper wire or copper sleeves are put on the plastic frame (polyethylene frame). Examples include Copper T, CuT380 A, Multiload 375 etc.

The various types of Copper IUDs differ from each other by the amount of copper. The initial Copper IUDs were wound with 200-250 mm2 wire (CopperT 200). The modern copper containing devices contain more copper and a part of copper in the form of solid tubal sleeves rather than wire. This increases the efficacy and lifespan (Cu T-380 A).

• CuT 380A - It is a T shaped device with a polyethylene frame holding 380 mm2 of exposed surface area of copper. The IUD frame contains barium sulfate thus making it radio-opaque.

• CuT-380Ag - It is identical to 380 A except that the copper wire on the stem has a silver core to prevent fragmentation and extend the life span of the copper.

• CuT 380 slimline - It has copper sleeves flushed at the ends of horizontal arms to facilitate easier loading and insertion. The performance of CuT-380 Ag and the CuT-380 slimline is equal to that of CuT-380 A.

• Multiload 375 - It has 375 mm2 of copper wire wound around its stem. The flexible arms are designed to minimize expulsions. The multiload 375 and T cu-380 A are similar in their efficacy and performance.

• Nova T - It is similar to the CuT-200, containing 200 mm2 of copper. However, the Nova T has a silver core to the copper wire, flexible arms, and a large flexible loop at the bottom to prevent cervical perforation.

Hormone-Releasing IUDs

• Progestasert - It is a T shaped IUD made of ethylene and vinyl acetate copolymer containing titanium dioxide. The vertical stem contains a reservoir of 38 mg progesterone together with barium sulfate dispersed in silicone fluid. The progesterone is released at the rate of 65 µg per day.

• LNG - 20 (Mirena) - This T shape & device has a collar attached to vertical arm containing 52 mg of levonorgestrel dispersed in poly dimethyl siloxane. It releases 15µg of levonorgestrel per day in vivo and is effective for 7-10 years..