Cu T 380A IUCD should be replaced once in :
**Core Concept**
The Cu T 380A IUCD is a type of non-hormonal, long-acting reversible contraceptive device (LARC) that relies on copper ions to prevent fertilization. Its effectiveness is attributed to the local inflammatory response it induces in the endometrial cavity, which creates an environment inhospitable to sperm and fertilization.
**Why the Correct Answer is Right**
The Cu T 380A IUCD has a recommended replacement interval of 10 years. This is because the copper ions released by the device gradually leach out over time, and the device's effectiveness in preventing pregnancy decreases as the copper content diminishes. The device should be replaced every 10 years to ensure continued efficacy and prevent potential complications such as increased risk of pelvic inflammatory disease (PID).
**Why Each Wrong Option is Incorrect**
* **Option A:** This is incorrect because the Cu T 380A IUCD should not be replaced every 5 years. While some IUCDs have shorter replacement intervals, the Cu T 380A is designed to last for 10 years.
* **Option B:** This is incorrect because there is no established indication for replacing the Cu T 380A IUCD after 5 years due to suspected decreased effectiveness. In fact, studies have shown that the device remains effective for 10 years.
* **Option C:** This is incorrect because the Cu T 380A IUCD should not be replaced every 15 years. While some IUCDs have longer replacement intervals, the Cu T 380A is specifically designed to be replaced every 10 years to maintain its effectiveness.
**Clinical Pearl / High-Yield Fact**
It's essential to note that while the Cu T 380A IUCD is a highly effective form of contraception, it's not without risks. Women with a history of PID or those with an increased risk of STIs may be advised against using this device.
**Correct Answer:** D. 10 years