Contraception and Family Planning — MCQs

Contraception and Family Planning Indian Medical PG Practice Questions and MCQs

Question 231: What is true for Pomeroy's technique of tubal ligation?

A. The failure rate is higher than other methods.
B. It involves ligation and burying the proximal end of the tube.
C. The site of ligation is the distal one-third of the tube.
D. It is the commonly used technique for open/minilaparotomy tubal ligation. (Correct Answer)

Explanation: ### Explanation **Pomeroy’s technique** is the most widely practiced method for female sterilization via minilaparotomy or during a Cesarean section. Its popularity stems from its simplicity, safety, and high efficacy. #### Why Option D is Correct: The technique involves grasping the **mid-isthmic portion** of the fallopian tube with a Babcock forceps to create a loop. This loop is ligated using a **rapidly absorbable suture** (usually plain catgut) and then excised. As the suture absorbs, the two cut ends of the tube pull apart and undergo fibrosis, creating a physical gap that prevents fertilization. Its ease of performance makes it the "gold standard" for open tubal ligation. #### Analysis of Incorrect Options: * **Option A:** Pomeroy’s technique has a very low failure rate (approximately **1 in 300 to 1 in 500**). It is highly effective; the most common cause of failure is surgical error (ligating the round ligament by mistake). * **Option B:** This describes **Irving’s technique** or **Uchida’s technique**, where the proximal end is buried into the myometrium or broad ligament to further reduce failure rates. * **Option C:** The site of ligation is the **mid-isthmic portion**, not the distal third. The isthmus is chosen because it is the narrowest part of the tube, ensuring a clean gap after healing. #### High-Yield Clinical Pearls for NEET-PG: * **Ideal Suture:** Plain catgut is used because it absorbs quickly, allowing the ends to separate before recanalization can occur. * **Madlener Technique:** Similar to Pomeroy but involves crushing the tube and using non-absorbable sutures (higher failure rate/risk of fistula). * **Timing:** Postpartum sterilization is ideally performed **24–48 hours** after delivery. * **Failure & Ectopic Pregnancy:** If a patient becomes pregnant after tubal ligation, there is a high clinical suspicion for **ectopic pregnancy**.

Question 232: How is contraception failure defined?

A. Per woman-year
B. Per 10 woman-years
C. Per 100 woman-years (Correct Answer)
D. Per 1000 woman-years

Explanation: ### Explanation The effectiveness of a contraceptive method is traditionally measured using the **Pearl Index**. This index defines contraceptive failure as the number of unintended pregnancies that occur **per 100 woman-years** of exposure. **1. Why the Correct Answer is Right:** The Pearl Index is the standard statistical tool used in clinical trials and epidemiological studies to compare different birth control methods. One "woman-year" represents one woman using a method for one year (or 13 menstrual cycles). Therefore, "100 woman-years" represents the total experience of 100 women using a specific contraceptive method for one full year. This denominator provides a standardized percentage-like rate that is easy for clinicians and patients to interpret (e.g., a Pearl Index of 1 means 1 in 100 women will get pregnant in a year). **2. Why the Incorrect Options are Wrong:** * **Per woman-year (A):** This is too small a sample size to provide a statistically significant or easily comparable rate for methods with high efficacy. * **Per 10 woman-years (B) and Per 1000 woman-years (D):** While these could mathematically represent failure rates, they are not the internationally recognized standard units for the Pearl Index. **3. High-Yield Clinical Pearls for NEET-PG:** * **Pearl Index Formula:** (Number of pregnancies × 1200) / (Total months of exposure). * **Theoretical vs. Typical Use:** "Theoretical efficacy" (perfect use) is always higher than "Typical use" efficacy (which accounts for human error). * **Most Effective Methods:** Implants (Nexplanon) and Vasectomy have the lowest Pearl Indices (<0.1). * **Least Effective Methods:** Barrier methods (Condoms) and natural methods (Rhythm method) have higher Pearl Indices (ranging from 15–25 in typical use). * **Life Table Analysis:** This is an alternative method to the Pearl Index that calculates failure rates at specific intervals (e.g., at 6 months vs. 12 months), accounting for users who drop out of a study.

Question 233: The 'banana sign' is seen in which of the following conditions?

A. Neural tube defect (Correct Answer)
B. Hydrops fetalis
C. Twins
D. Intrauterine demise

Explanation: The **'Banana Sign'** is a classic sonographic marker of **Open Neural Tube Defects (ONTD)**, specifically **Spina Bifida**. ### **Explanation of the Correct Answer** In Spina Bifida, there is a defect in the spinal column that leads to the leakage of cerebrospinal fluid (CSF). This creates a "suction effect" (downward displacement) on the hindbrain, pulling the cerebellum into the posterior fossa. This process, known as the **Arnold-Chiari II malformation**, causes the cerebellum to lose its typical "dumbbell" shape and wrap around the brainstem, appearing curved like a **banana** on a transverse ultrasound view of the fetal head. ### **Analysis of Incorrect Options** * **B. Hydrops fetalis:** Characterized by abnormal fluid accumulation in at least two fetal compartments (e.g., ascites, pleural effusion, skin edema). It does not involve cerebellar displacement. * **C. Twins:** Ultrasound findings focus on chorionicity (e.g., 'Lambda' or 'T' signs) and fetal growth, not specific cerebellar deformities. * **D. Intrauterine demise:** Associated with signs like **Spalding’s sign** (overlapping of skull bones) or **Robert’s sign** (gas in the fetal heart/vessels), occurring due to fetal maceration. ### **High-Yield Clinical Pearls for NEET-PG** * **Lemon Sign:** Also seen in Spina Bifida; refers to the scalloping or inward flattening of the frontal bones. * **Ventriculomegaly:** Often accompanies the banana sign due to obstructive hydrocephalus. * **Screening:** Maternal Serum Alpha-Fetoprotein (MSAFP) is elevated in open NTDs. * **Prevention:** 400 mcg of Folic Acid daily (pre-conceptionally) reduces the risk of NTDs; 4 mg is used for women with a previous affected pregnancy.

Question 234: Which of the following is NOT a side effect of oral contraceptives?

A. Irregular bleeding
B. Headache
C. Thrombosis
D. Increased risk of ovarian cancer (Correct Answer)

Explanation: **Explanation:** The correct answer is **D. Increased risk of ovarian cancer**. In fact, Combined Oral Contraceptive Pills (COCPs) are highly **protective** against ovarian cancer. **Why Option D is correct:** COCPs suppress ovulation by inhibiting the release of FSH and LH. According to the "Incessant Ovulation Theory," reducing the number of ovulatory cycles decreases repetitive trauma to the ovarian epithelium. Using COCPs for 5 years reduces the risk of ovarian cancer by approximately 50%, and this protective effect persists for up to 15–20 years after discontinuation. **Why other options are incorrect:** * **A. Irregular bleeding:** Breakthrough bleeding or spotting is the most common side effect, especially during the first few months of use (progestogen-induced endometrial instability). * **B. Headache:** Estrogen can trigger or worsen migraines. New-onset focal headaches or migraines with aura are contraindications due to the increased risk of stroke. * **C. Thrombosis:** The estrogen component (Ethinylestradiol) increases the synthesis of clotting factors (II, VII, IX, X) in the liver, significantly increasing the risk of Venous Thromboembolism (VTE). **High-Yield NEET-PG Pearls:** * **Protective Effects:** COCPs reduce the risk of **Ovarian, Endometrial, and Colorectal cancers**. * **Increased Risks:** COCPs slightly increase the risk of **Breast and Cervical cancers**, as well as Hepatic Adenomas. * **Non-contraceptive benefits:** Reduced incidence of Pelvic Inflammatory Disease (PID), ectopic pregnancy, and benign breast disease. * **Absolute Contraindication:** Smokers >35 years old (>15 cigarettes/day) due to high cardiovascular risk.

Question 235: Levonorgestrel-containing IUCD prevents pregnancy primarily due to which mechanism?

A. Making the endometrium unreceptive (Correct Answer)
B. Suppressing ovulation
C. Initiating inflammatory changes within the endometrium
D. Making cervical mucus thin

Explanation: **Explanation:** The **Levonorgestrel-releasing Intrauterine System (LNG-IUS)**, such as Mirena, primarily acts through local progestogenic effects. The high local concentration of levonorgestrel leads to profound **endometrial atrophy** and down-regulation of estrogen receptors, making the **endometrium unreceptive** to implantation. This is considered its most significant mechanism of action. **Analysis of Options:** * **A (Correct):** As mentioned, the primary mechanism is the induction of a thin, atrophic endometrium that prevents a fertilized egg from implanting. * **B (Incorrect):** While some systemic absorption occurs, ovulation is maintained in the majority of cycles (about 75-85%). It is not the primary contraceptive mechanism. * **C (Incorrect):** This is the primary mechanism for **Copper-containing IUCDs**, which cause a sterile inflammatory response and are spermicidal. LNG-IUS relies on hormonal changes rather than inflammation. * **D (Incorrect):** Progestogens make the cervical mucus **thick and viscid** (not thin), which creates a barrier to sperm penetration. While this is a secondary mechanism of LNG-IUS, endometrial changes remain the primary factor. **High-Yield Clinical Pearls for NEET-PG:** * **Life span:** LNG-IUS (Mirena) is FDA-approved for up to 8 years (previously 5). * **Non-contraceptive use:** It is the **Gold Standard** (First-line) medical management for **Heavy Menstrual Bleeding (HMB)** and Adenomyosis. * **Failure Rate:** It has one of the lowest failure rates (0.2%), comparable to surgical sterilization. * **Pearl:** Unlike Copper-T, LNG-IUS typically reduces menstrual blood flow and may lead to amenorrhea, which is often a desired therapeutic effect.

Question 236: What are the benefits of Levonorgestrel-releasing intrauterine devices (LNG-IUDs)?

A. Management of menorrhagia
B. Contraceptive effect
C. Hormone replacement therapy after menopause
D. All the above (Correct Answer)

Explanation: **Explanation:** The Levonorgestrel-releasing Intrauterine System (LNG-IUS), such as Mirena, is a highly effective long-acting reversible contraceptive (LARC) that works primarily by thickening cervical mucus and causing endometrial atrophy. **Why "All the above" is correct:** 1. **Management of Menorrhagia (Option A):** The LNG-IUD is the **medical gold standard** for treating Heavy Menstrual Bleeding (HMB). The local release of progestogen causes profound endometrial suppression, leading to a 70–90% reduction in menstrual blood loss and often resulting in amenorrhea. 2. **Contraceptive Effect (Option B):** It is one of the most effective forms of contraception, with a Pearl Index comparable to sterilization (approx. 0.2). It provides protection for 5–8 years depending on the specific device. 3. **Hormone Replacement Therapy (Option C):** In postmenopausal women receiving Estrogen Replacement Therapy (ERT), the LNG-IUD is used to provide **endometrial protection**. It prevents estrogen-induced endometrial hyperplasia and malignancy, serving as the progestogen component of HRT. **High-Yield Clinical Pearls for NEET-PG:** * **Non-contraceptive benefits:** It is also used in the management of endometriosis, adenomyosis, and endometrial hyperplasia without atypia. * **Mechanism:** Primarily local action; it does not consistently inhibit ovulation (unlike OCPs). * **Side Effects:** The most common reason for discontinuation in the first few months is **irregular spotting/breakthrough bleeding**. * **Ideal Candidate:** A woman with menorrhagia who also desires long-term contraception.

Question 237: Which of the following is NOT a mechanism of action for an Intrauterine Contraceptive Device (IUCD)?

A. Thickening of cervical mucus
B. Inducing a local foreign body reaction
C. Constriction of the fallopian tubes (Correct Answer)
D. Making the endometrium unfavorable for implantation

Explanation: ### Explanation The primary mechanism of action for all Intrauterine Contraceptive Devices (IUCDs) is to create a sterile inflammatory environment within the uterine cavity that is toxic to both sperm and ova. **Why Option C is the Correct Answer:** **Constriction of the fallopian tubes** is not a mechanism of action for IUCDs. IUCDs exert their effects locally within the uterus and do not cause anatomical or functional constriction of the tubes. While they may alter the tubal fluid environment or ciliary motility (especially in the case of Copper-T), they do not physically constrict the lumen. **Analysis of Incorrect Options:** * **Option A (Thickening of cervical mucus):** This is the primary mechanism for **Hormonal IUCDs** (e.g., LNG-IUD/Mirena). The progestogen thickens the mucus, creating a barrier that prevents sperm penetration into the upper reproductive tract. * **Option B (Inducing a local foreign body reaction):** This is the hallmark of **Non-hormonal/Copper IUCDs**. The device acts as a foreign body, causing a sterile inflammatory response (leukocyte infiltration), which is spermicidal and prevents fertilization. * **Option C (Unfavorable endometrium):** Both copper and hormonal IUCDs alter the endometrial lining. Copper IUCDs cause biochemical changes, while LNG-IUDs cause endometrial atrophy, both of which prevent successful implantation should fertilization occur. **NEET-PG High-Yield Pearls:** * **Primary MOA:** The most important mechanism for both types of IUCD is **pre-fertilization** (spermicidal/preventing fertilization), not post-fertilization (abortion). * **Copper-T:** Specifically increases prostaglandins and copper ions, which are toxic to sperm. * **LNG-IUD (Mirena):** The most effective mechanism is the **thickening of cervical mucus**. It also causes endometrial atrophy, making it the "Gold Standard" for treating Menorrhagia (DUB). * **Ideal Candidate:** A multiparous woman in a stable monogamous relationship.

Question 238: A mother of 3 children had unprotected sexual intercourse last night. She wishes to avoid conception as her youngest child is only 7 months old. Which of the following is NOT used for emergency contraception?

A. Intrauterine device (IUD)
B. Danazol (Correct Answer)
C. Ethinyl estradiol and levonorgestrel
D. Mifepristone

Explanation: **Explanation:** The correct answer is **Danazol**. While Danazol is a synthetic androgen used in the treatment of endometriosis and hereditary angioedema, it has **no role** in emergency contraception (EC). Historically, high doses were studied, but it was found to be ineffective compared to modern methods and is not recommended by any current clinical guidelines. **Analysis of Options:** * **Intrauterine Device (IUD):** The Copper-T (Cu-T) is the **most effective** method of emergency contraception. It can be inserted up to 5 days (120 hours) after unprotected intercourse and provides the added benefit of long-term contraception. * **Ethinyl Estradiol and Levonorgestrel:** This combination is known as the **Yuzpe Regimen**. It involves taking two doses (100 mcg EE + 0.5 mg LNG each) 12 hours apart. While effective, it is now less preferred due to a high incidence of nausea and vomiting compared to LNG-only pills. * **Mifepristone:** A selective progesterone receptor modulator (SPRM). In low doses (10 mg or 25 mg), it is highly effective as an emergency contraceptive by delaying ovulation. (Note: High doses are used for medical abortion). **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard (Most Effective):** Copper IUD (Failure rate <0.1%). * **Drug of Choice (Hormonal):** Levonorgestrel (LNG) 1.5 mg single dose (effective up to 72 hours). * **Ulipristal Acetate:** Currently considered the most effective *oral* EC, effective up to 120 hours (5 days). * **Mechanism:** Most hormonal ECs work primarily by **delaying or inhibiting ovulation**; they do not disrupt an established pregnancy (not abortifacients).

Question 239: Assertion: Spermicides containing non-oxynol-9 provide effective protection against STDs. Reason: Non-oxynol 9 has apoptotic effects on HIV, gonococci and chlamydia.

A. Both assertion and reason are true independently
B. Assertion is true, reason is false
C. Assertion is false, reason is true
D. Both assertion and reason are false (Correct Answer)

Explanation: **Explanation:** The correct answer is **D (Both assertion and reason are false)**. **1. Why the Assertion and Reason are False:** While Non-oxynol-9 (N-9) is a potent surfactant that disrupts the cell membranes of spermatozoa, it does **not** provide protection against STDs. In fact, clinical trials have shown that N-9 can increase the risk of HIV transmission. The reason is also false because N-9 does not have "apoptotic effects." Instead, it acts via **detergent-like disruption** of cell membranes. This non-specific action causes micro-abrasions and inflammation in the vaginal and rectal epithelium. These lesions act as portals of entry for pathogens like HIV, *Neisseria gonorrhoeae*, and *Chlamydia trachomatis*, thereby increasing rather than decreasing the risk of infection. **2. Analysis of Incorrect Options:** * **Option A & B:** Incorrect because the assertion is false. N-9 is strictly a contraceptive and is contraindicated for individuals at high risk of STDs/HIV. * **Option C:** Incorrect because the reason is scientifically inaccurate. The mechanism is membrane disruption (cytotoxicity), not programmed cell death (apoptosis). **3. High-Yield Clinical Pearls for NEET-PG:** * **Mechanism of Action:** Spermicides (N-9) inhibit sperm motility and oxygen uptake by disrupting the lipoprotein membrane. * **Failure Rate:** The typical use failure rate is high (~28%), making it one of the least effective standalone methods. * **WHO Recommendation:** The WHO explicitly states that N-9 should not be used for STD/HIV prevention and should not be used as a lubricant during anal intercourse. * **Ideal Usage:** It is most effective when used in combination with barrier methods like diaphragms or condoms.

Question 240: All of the following statements concerning methods limiting family size are true, except:

A. Women who do not breastfeed are much more likely to become pregnant than those who do.
B. Globally, the number of tubectomies far exceeds the number of vasectomies.
C. The barrier methods (condoms and diaphragms) are perhaps the most effective at limiting family size. (Correct Answer)
D. All anovulatory drugs are particularly likely to cause effects in women over 35 years of age and women who smoke.

Explanation: **Explanation:** The correct answer is **C**. While barrier methods (condoms and diaphragms) are excellent for preventing Sexually Transmitted Infections (STIs), they are **not** the most effective methods for limiting family size. Their efficacy is highly dependent on consistent and correct usage. In real-world scenarios ("typical use"), they have a significant failure rate (approx. 13-18%) compared to Long-Acting Reversible Contraceptives (LARC) like IUCDs or permanent methods like sterilization, which have failure rates of less than 1%. **Analysis of other options:** * **Option A:** True. Exclusive breastfeeding causes **Lactational Amenorrhea**, which suppresses ovulation via high prolactin levels. Non-breastfeeding women resume ovulation much earlier (often by 6 weeks postpartum), increasing pregnancy risk. * **Option B:** True. Despite being a simpler and safer procedure, **tubectomy** (female sterilization) remains the most common method of permanent contraception globally and in India due to various socio-cultural factors. * **Option C:** True. Combined Oral Contraceptive Pills (COCPs) are contraindicated or used with extreme caution in women **>35 years who smoke** due to a significantly increased risk of venous thromboembolism (VTE), myocardial infarction, and stroke. **High-Yield Clinical Pearls for NEET-PG:** * **Pearl Index:** It is the most common measure of contraceptive efficacy (defined as the number of unintended pregnancies per 100 woman-years of exposure). * **Most effective method:** Implant (Nexplanon) followed by Vasectomy/IUCD. * **LAM (Lactational Amenorrhea Method) Criteria:** 1. Amenorrhea, 2. Exclusive breastfeeding, 3. Less than 6 months postpartum. * **WHO Eligibility Criteria:** Smoking >15 cigarettes/day in women >35 years is a **Category 4** (absolute contraindication) for COCPs.

Practice by Chapter

Natural Family Planning Methods

Practice Questions

Barrier Methods

Practice Questions

Hormonal Contraceptives

Practice Questions

Intrauterine Devices

Practice Questions

Emergency Contraception

Practice Questions

Permanent Contraception Methods

Practice Questions

Contraception in Special Populations

Practice Questions

Contraceptive Counseling

Practice Questions

Side Effects and Complications of Contraceptives

Practice Questions

Future Contraceptive Technologies

Practice Questions

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