Non medicated Intra Devices (IUDs) are called as
**Core Concept**
Intrauterine devices (IUDs) are a form of long-term reversible contraception that can be medicated or non-medicated. Non-medicated IUDs rely on physical mechanisms to prevent fertilization, whereas medicated IUDs release hormones to achieve the same effect. Non-medicated IUDs are also known as copper IUDs due to their copper content.
**Why the Correct Answer is Right**
Non-medicated IUDs, specifically copper IUDs, work by releasing ions that are toxic to sperm, thereby preventing fertilization. The copper ions alter the sperm's motility and viability, making it difficult for them to fertilize an egg. This mechanism is based on the sperm's inability to survive in an environment with high copper concentrations.
**Why Each Wrong Option is Incorrect**
**Option A:**
This option is incorrect because it is not a specific term used to describe non-medicated IUDs. While some IUDs may be referred to as "non-medicated," this term is not as commonly used as "copper IUD."
**Option B:**
This option is incorrect because medicated IUDs, such as the Mirena IUD, release hormones to prevent fertilization, whereas non-medicated IUDs rely on copper ions.
**Option C:**
This option is incorrect because it is not a recognized term for a type of IUD.
**Clinical Pearl / High-Yield Fact**
Copper IUDs are a popular choice for non-medicated IUDs due to their high efficacy rates and long duration of action. They are also a good option for women who are breastfeeding or have a history of pelvic inflammatory disease.
**Correct Answer: C. Copper IUDs.**