The highest incidence of ectopic pregnancy amongst contraceptive users is observed with :
**Question:** The highest incidence of ectopic pregnancy amongst contraceptive users is observed with:
A. Depo-Provera (medroxyprogesterone acetate)
B. Intrauterine Device (IUD)
C. Oral Contraceptive Pills (OCP)
D. Lactational Amenorrhea Method (LAM)
**Core Concept:** Ectopic pregnancy is a type of pregnancy in which the fertilized egg implants outside the uterus, usually in the fallopian tube. Contraceptives can increase the risk of ectopic pregnancy due to the disruption of the normal menstrual cycle and hormonal balance.
**Why the Correct Answer is Right:** Depo-Provera (medroxyprogesterone acetate) is a progestin-only contraceptive injection that suppresses ovulation and disrupts the menstrual cycle, increasing the risk of ectopic pregnancy.
**Why Each Wrong Option is Incorrect:**
B. Intrauterine Device (IUD): Though IUDs can cause some side effects, such as pelvic inflammatory disease and ectopic pregnancy, they are generally considered safe contraceptives with low risk due to their long-lasting effect.
C. Oral Contraceptive Pills (OCP): Although OCP can disrupt the normal menstrual cycle and increase the risk of ectopic pregnancy, their use is less likely to cause this complication compared to progestin-only methods like Depo-Provera.
D. Lactational Amenorrhea Method (LAM): LAM relies on nursing and amenorrhea to prevent pregnancy, making it a low-risk method.
**Clinical Pearl:** Ectopic pregnancies often present with non-specific symptoms, such as lower abdominal pain and vaginal bleeding. Prompt diagnosis and treatment are crucial to prevent severe complications like rupture of the fallopian tube, which can lead to life-threatening hemorrhage.
**Correct Answer:** D. Lactational Amenorrhea Method (LAM)
**Core Concept:** LAM is a method of contraception that relies on breastfeeding and the absence of menstruation to prevent pregnancy. It is a low-risk method with a success rate of approximately 99% in the first six months and 95% in one year.
**Why the Correct Answer is Right:** LAM is a low-risk method because it relies on physiological mechanisms that occur naturally in lactating women. Breastfeeding suppresses ovulation, and amenorrhea prevents fertilization of the ovum by delaying the onset of menstruation.
**Why Each Wrong Option is Incorrect:**
A. Depo-Provera (medroxyprogesterone acetate): This progestin-only contraceptive injectable is more likely to cause ectopic pregnancies due to its disruption of the normal menstrual cycle and hormonal balance.
B. Intrauterine Device (IUD): IUDs can cause menstrual irregularities, which may lead to ect