All of the following is a mechanism of action of IUCD except:
**Question:** All of the following is a mechanism of action of IUCD except:
A. Sterilization
B. Progestin-only contraception
C. Localized infection
D. Ovulation induction
**Correct Answer:** C. Localized infection
**Core Concept:** Intrauterine Contraceptive Devices (IUCDs) are long-acting, reversible contraceptives that work by various mechanisms. IUCDs can be classified into hormonal and non-hormonal types.
**Why the Correct Answer is Right:** IUCDs primarily prevent fertilization by causing changes in the uterine environment that make it unfavorable for sperm survival and ovum fertilization. The correct answer, "Localized infection," is incorrect because IUCDs do not contribute to localized infections. Infections can occur if the device is not inserted correctly or if there are other underlying factors, such as poor hygiene or a history of pelvic inflammatory disease (PID).
**Why Each Wrong Option is Incorrect:**
A. Sterilization: Sterilization is a permanent form of contraception that aims to block both the female and male reproductive systems, rendering them unable to produce offspring. Sterilization cannot be attributed to IUCDs, which are reversible contraceptives.
B. Progestin-only contraception: IUCDs, particularly hormonal ones, release progestins that can suppress ovulation and increase cervical mucus viscosity, making it difficult for sperm to pass through. However, this is not the primary mechanism of action for IUCDs.
D. Ovulation induction: Ovulation induction is the process of stimulating the ovaries to produce an egg. IUCDs, on the other hand, work by preventing fertilization and maintaining an unfavorable environment for sperm and ovum.
**Clinical Pearl:** The misconception of IUCDs causing localized infections might lead to apprehension among patients, potentially deterring them from considering this effective contraceptive method. It is essential for healthcare providers to address these misconceptions and emphasize the benefits and safety profile of IUCDs during the counselling process. Uptake of IUCD can significantly reduce unintended pregnancies and its associated complications.