## **Core Concept**
The Cu-T 380A, also known as the Copper T 380A, is a type of intrauterine device (IUD) used for contraception. It works by releasing copper ions, which prevents sperm from fertilizing an egg. The lifespan of an IUD is crucial for its effectiveness and user compliance.

## **Why the Correct Answer is Right**
The Cu-T 380A has a lifespan of 10 years due to its design and the amount of copper it contains. It is made of a T-shaped polyethylene frame with copper wire wrapped around the stem. The device releases a small amount of copper daily, which provides long-term contraceptive protection. Studies and clinical trials have shown that the Cu-T 380A maintains its contraceptive efficacy for up to 10 years.

## **Why Each Wrong Option is Incorrect**
- **Option A:** 5 years. This is incorrect because, although some IUDs may have a shorter lifespan, the Cu-T 380A is specifically designed and approved for use up to 10 years.
- **Option B:** 7 years. This option is incorrect because it underestimates the approved duration of use for the Cu-T 380A.
- **Option D:** 12 years. This option is incorrect because, while some IUDs might have extended durations of use, the Cu-T 380A's approved and commonly recommended lifespan is 10 years.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the Cu-T 380A is a highly effective form of reversible contraception with a failure rate of less than 1% per year. Its 10-year lifespan makes it a convenient option for long-term contraceptive needs. However, it's essential for healthcare providers to ensure that the IUD is properly inserted and that patients are aware of the signs of potential complications.

## **Correct Answer:** C. 10 years.