Which of the following is a hormone releasing intra uterine device (IUD)?

Options

A. Multiload 375
B. LNG-20
C. Cervical cap
D. Vault

Answer

**Step-by-Step Solution:**

1. **Understanding Intrauterine Devices (IUDs)**: Intrauterine devices are contraceptive devices that are inserted into the uterus to prevent pregnancy. They can be classified into two main types: hormone-releasing IUDs and copper-releasing IUDs.

2. **Identifying the Options**: The options provided are:
- Multiload 375
- LNG 20
- Cervical cap
- Vault

3. **Analyzing Multiload 375**: The Multiload 375 is a type of copper-releasing IUD. It releases copper ions which decrease sperm motility and create an environment in the uterus that is unsuitable for implantation. Therefore, it does not release hormones.

4. **Analyzing LNG 20**: The LNG 20 is a hormone-releasing IUD. It releases the hormone Levonorgestrel, which causes changes in the endometrium (the lining of the uterus), leading to endometrial atrophy. This makes it difficult for an embryo to implant, thus preventing pregnancy.

5. **Analyzing Cervical Cap**: The cervical cap is a barrier method of contraception and does not release any hormones. It physically blocks sperm from entering the uterus.

6. **Analyzing Vault**: The term "vault" does not refer to a specific type of IUD and is not relevant in this context.

7. **Conclusion**: Based on the analysis, the only hormone-releasing intrauterine device among the options provided is LNG 20.

**Final Answer**: LNG 20 is a hormone-releasing intrauterine device (IUD).

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