Maternal-Fetal Medicine — MCQs

A 22-year-old woman presents with a 2-hour history of acute abdominal pain and vaginal bleeding. Her vital signs are normal. Physical examination reveals blood oozing from the vaginal opening. Laparotomy shows an enlarged right fallopian tube with hemorrhage and rupture. What is the most likely cause of hemorrhage in this patient?

Q327Medium

In a patient with preeclampsia, all of the following drugs can be used in treatment EXCEPT?

Q328Medium

A pregnant female with a past history of embolism in puerperium requires medical management in her next pregnancy to avoid recurrence. What is the recommended management?

Q329Medium

A young lady presents with 6 weeks of amenorrhea, nausea, vomiting, and severe abdominal pain. Her BP is 100/80 mm Hg. Examination reveals a 5 x 5 cm adnexal mass. What is the plan of management?

Q330Medium

Macrosomia is found in all of the following conditions EXCEPT:

Maternal-Fetal Medicine Indian Medical PG Practice Questions and MCQs

Question 321: Which of the following is a potential candidate for a high risk of Gestational Diabetes Mellitus (GDM)?

A. Young primigravida
B. Unexplained perinatal loss (Correct Answer)
C. Presence of oligohydramnios
D. Previous low birth weight baby

Explanation: **Explanation:** Gestational Diabetes Mellitus (GDM) is characterized by carbohydrate intolerance with onset or first recognition during pregnancy. Identifying high-risk candidates is crucial for early screening and management. **Why "Unexplained perinatal loss" is correct:** A history of unexplained stillbirth or neonatal death is a classic "red flag" for undiagnosed or poorly controlled maternal hyperglycemia. Elevated maternal glucose levels lead to fetal hyperinsulinemia, which increases fetal oxygen consumption and can cause chronic hypoxia, metabolic acidosis, and sudden intrauterine fetal death (IUFD). Therefore, any woman with a history of unexplained perinatal loss is considered high-risk and requires immediate screening (usually at the first prenatal visit). **Analysis of Incorrect Options:** * **A. Young primigravida:** Advanced maternal age (>25–30 years) is a risk factor for GDM. Being young and a primigravida (first pregnancy) generally places a patient in a lower-risk category. * **C. Presence of oligohydramnios:** GDM is typically associated with **polyhydramnios** (excess amniotic fluid). This occurs because fetal hyperglycemia leads to osmotic diuresis, causing the fetus to produce excessive urine. * **D. Previous low birth weight baby:** GDM is associated with **fetal macrosomia** (birth weight >4kg) due to the growth-promoting effects of insulin. A history of a large-for-gestational-age (LGA) baby is a risk factor, not a low birth weight baby. **High-Yield Clinical Pearls for NEET-PG:** * **DIPSI Criteria:** In India, the Diagnosis and Health Care Management of Gestational Diabetes Mellitus (DIPSI) recommends a 75g oral glucose load regardless of the last meal. A 2-hour plasma glucose **≥140 mg/dL** is diagnostic. * **Other High-Risk Factors:** BMI >30 kg/m², history of GDM in a previous pregnancy, first-degree relative with Type 2 Diabetes, and Polycystic Ovary Syndrome (PCOS). * **Screening Timing:** High-risk women are screened at the first visit; if negative, they are re-tested between **24–28 weeks** of gestation.

Question 322: A 32-year-old female presents with 8 weeks of amenorrhea, signs of shock, and a past medical history of tuberculosis. What is the most likely diagnosis?

A. Ruptured ectopic pregnancy (Correct Answer)
B. Septic shock
C. Disseminated intravascular coagulation (DIC)
D. None of the above

Explanation: **Explanation:** The clinical presentation of **amenorrhea (8 weeks)** followed by **signs of shock** (hypotension, tachycardia, pallor) in a reproductive-age woman is a classic "spotter" for a **ruptured ectopic pregnancy** until proven otherwise. **Why Option A is correct:** The key diagnostic clue here is the **history of tuberculosis (TB)**. In endemic regions like India, pelvic tuberculosis is a leading cause of chronic salpingitis. This leads to tubal scarring, distorted anatomy, and ciliary dysfunction. When the fallopian tube is damaged but not completely occluded, it allows sperm to pass but traps the larger blastocyst, leading to an ectopic implantation. Rupture typically occurs between 6–10 weeks, causing massive intraperitoneal hemorrhage and hemorrhagic shock. **Why other options are incorrect:** * **Option B (Septic Shock):** While shock is present, septic shock usually follows an infected abortion or pelvic inflammatory disease and is characterized by high-grade fever, foul-smelling vaginal discharge, and leukocytosis, rather than sudden collapse following amenorrhea. * **Option C (DIC):** DIC is a secondary consumptive coagulopathy. While it can occur as a complication of severe hemorrhage or abruptio placentae, it is not a primary diagnosis for sudden shock at 8 weeks of gestation. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site of ectopic pregnancy:** Ampulla of the fallopian tube. * **Most common site of rupture:** Isthmus (occurs earlier, around 6–8 weeks, due to narrow lumen). * **Risk Factors:** History of PID/Tubal TB (strongest in India), previous ectopic pregnancy, tubal surgery, and IUCD use. * **Classic Triad:** Amenorrhea, abdominal pain, and vaginal bleeding (present in only 50% of cases). * **Gold Standard Investigation:** Transvaginal Ultrasound (TVUS) + Serum β-hCG (Correlation of the "Discriminatory Zone").

Question 323: Which of the following are causes of polyhydramnios?

A. Diabetes mellitus, renal agenesis, anencephaly
B. Preeclampsia, renal agenesis, anencephaly
C. Esophageal atresia, renal agenesis, anencephaly
D. Diabetes mellitus, esophageal atresia, anencephaly (Correct Answer)

Explanation: **Explanation:** Polyhydramnios is defined as an excess of amniotic fluid (Amniotic Fluid Index >25 cm or Single Deepest Pocket >8 cm). The volume of amniotic fluid is a balance between production (primarily fetal urine) and removal (primarily fetal swallowing). **Why Option D is Correct:** * **Diabetes Mellitus:** Maternal hyperglycemia leads to fetal hyperglycemia, causing **osmotic diuresis** and fetal polyuria. * **Esophageal Atresia:** This creates a mechanical GI obstruction, preventing the fetus from **swallowing** and absorbing amniotic fluid. * **Anencephaly:** This causes polyhydramnios via two mechanisms: the absence of the swallowing reflex and **transudation** of fluid from the exposed meninges into the amniotic cavity. **Why Other Options are Incorrect:** * **Renal Agenesis (Options A, B, C):** This is a classic cause of **oligohydramnios**. Since fetal urine is the primary source of amniotic fluid in the second and third trimesters, the absence of kidneys leads to a severe fluid deficiency (Potter’s sequence). * **Preeclampsia (Option B):** This is typically associated with placental insufficiency and fetal growth restriction, which leads to redirection of blood flow away from the fetal kidneys, resulting in **oligohydramnios**. **NEET-PG High-Yield Pearls:** * **Most common cause:** Idiopathic (approx. 50-60%). * **Most common maternal cause:** Diabetes Mellitus. * **Congenital anomalies:** Neural tube defects (anencephaly) and GI obstructions (duodenal atresia - "double bubble" sign) are high-yield associations. * **Complications:** Preterm labor (due to uterine overdistension), cord prolapse (upon ROM), and postpartum hemorrhage (uterine atony).

Question 324: In a young patient presenting with abdominal pain, what is the feature most suggestive of ectopic pregnancy?

A. Amenorrhea
B. Vomiting
C. Palpation of a tender adnexal mass
D. Increased beta-hCG in urine (Correct Answer)

Explanation: **Explanation:** The diagnosis of ectopic pregnancy relies on a high index of clinical suspicion combined with biochemical and radiological findings. **Why Option D is Correct:** The presence of **increased beta-hCG in urine** (a positive pregnancy test) is the most suggestive feature because it confirms the biological state of pregnancy. In a patient presenting with acute abdominal pain, the first step in the diagnostic algorithm is to rule out pregnancy. If the beta-hCG is positive and an intrauterine gestational sac is absent on ultrasound, the suspicion of an ectopic pregnancy becomes the primary concern. Without a positive pregnancy test, the diagnosis of ectopic pregnancy is virtually excluded. **Analysis of Incorrect Options:** * **A. Amenorrhea:** While common (present in 75% of cases), it is non-specific. Many patients with ectopic pregnancy experience irregular vaginal bleeding which they may mistake for a normal period, leading to a "negative" history of amenorrhea. * **B. Vomiting:** This is a non-specific constitutional symptom. While it can occur due to peritoneal irritation (if ruptured) or pregnancy-related hormonal changes, it is more commonly associated with gastroenteritis, appendicitis, or hyperemesis gravidarum. * **C. Palpation of a tender adnexal mass:** Although a classic finding, it is found in less than 50% of cases. Furthermore, a mass could represent a corpus luteum cyst, an inflammatory tubo-ovarian mass, or an endometrioma. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Triad:** Amenorrhea, abdominal pain, and vaginal bleeding (present in only 50% of patients). * **Gold Standard Diagnosis:** Transvaginal Ultrasound (TVS) + Serial Serum beta-hCG. * **Discriminatory Zone:** The level of beta-hCG (usually 1500–2000 mIU/mL) above which a normal intrauterine pregnancy should be visible on TVS. * **Arias-Stella Reaction:** Hypersecretory endometrium seen on curettage, suggestive of pregnancy but not specific to ectopic.

Question 325: Cervical pregnancy is confirmed by the presence of?

A. Gestational sac below the internal os
B. Intractable bleeding following evacuation or expulsion of products
C. Painless bleeding
D. Histology showing the presence of villi inside the cervical stroma (Correct Answer)

Explanation: **Explanation:** Cervical pregnancy is a rare form of ectopic pregnancy where the blastocyst implants in the cervical canal below the internal os. **1. Why the correct answer is right:** The definitive diagnosis of a cervical pregnancy is established by **histology showing the presence of chorionic villi invading the cervical stroma**. This is the "gold standard" because it confirms that the implantation occurred specifically within the cervical tissue rather than the uterine cavity. Rubin’s histological criteria (1948) require that cervical glands be opposite the placental attachment and that the attachment be below the entrance of the uterine vessels or the peritoneal reflection. **2. Analysis of incorrect options:** * **Option A:** While a gestational sac below the internal os is a classic **ultrasonographic finding** (part of Paalman and McElin’s criteria), it is not definitive on its own, as it can be confused with an "abortion in progress" (cervical phase of an inevitable abortion). * **Option B:** Intractable bleeding after evacuation is a common **clinical complication** of cervical pregnancy due to the cervix's inability to contract, but it is a consequence of the condition, not the diagnostic confirmation. * **Option C:** Painless vaginal bleeding is the most common **presenting symptom**, but it is non-specific and occurs in various other conditions like placenta previa or threatened abortion. **3. Clinical Pearls for NEET-PG:** * **Clinical Sign:** "Hourglass" shaped uterus (distended cervix with a smaller uterine body). * **USG Criteria:** Empty uterine cavity, "sliding sign" is negative (the sac does not move when pressure is applied with the probe). * **Management:** Historically required hysterectomy due to hemorrhage; currently managed with **Methotrexate** (if stable) or uterine artery embolization. * **Key Distinction:** Unlike inevitable abortion, in cervical pregnancy, the internal os is usually closed.

Question 326: A 22-year-old woman presents with a 2-hour history of acute abdominal pain and vaginal bleeding. Her vital signs are normal. Physical examination reveals blood oozing from the vaginal opening. Laparotomy shows an enlarged right fallopian tube with hemorrhage and rupture. What is the most likely cause of hemorrhage in this patient?

A. Choriocarcinoma
B. Ectopic pregnancy (Correct Answer)
C. Infarcted tubal polyp
D. Intramural leiomyoma

Explanation: **Explanation:** The clinical presentation of acute abdominal pain, vaginal bleeding, and a ruptured, hemorrhagic fallopian tube in a reproductive-age woman is a classic triad for a **ruptured ectopic pregnancy**. **1. Why Ectopic Pregnancy is Correct:** An ectopic pregnancy occurs when a fertilized ovum implants outside the uterine cavity, most commonly in the **ampulla of the fallopian tube (70%)**. As the embryo grows, the thin-walled tube cannot accommodate the size, leading to stretching, eventual rupture, and significant intraperitoneal hemorrhage. This is a surgical emergency and the most common cause of maternal mortality in the first trimester. **2. Why Other Options are Incorrect:** * **Choriocarcinoma:** While it can cause bleeding and is a gestational trophoblastic neoplasm, it typically presents as a bulky uterine mass or metastatic disease (often to the lungs). It rarely causes primary tubal rupture unless it arises primarily in the tube, which is extremely rare. * **Infarcted tubal polyp:** These are rare, usually small, and asymptomatic. While they may cause minor spotting, they do not lead to tubal rupture or acute hemoperitoneum. * **Intramural leiomyoma:** These are benign smooth muscle tumors located within the **uterine wall**. They may cause heavy menstrual bleeding (menorrhagia) or pelvic pressure, but they do not involve the fallopian tubes or cause acute tubal rupture. **3. NEET-PG High-Yield Pearls:** * **Most common site:** Ampulla (70%); **Most common site for rupture:** Isthmus (due to narrow lumen). * **Risk Factors:** Prior PID (most common), previous ectopic pregnancy, tubal surgery, and IUCD use. * **Diagnosis:** Transvaginal Ultrasound (TVUS) showing an empty uterus with an adnexal mass + β-hCG levels above the **discriminatory zone** (1500–2000 mIU/mL). * **Arias-Stella Reaction:** Hypersecretory endometrium seen on biopsy, which is suggestive (but not diagnostic) of pregnancy (ectopic or intrauterine).

Question 327: In a patient with preeclampsia, all of the following drugs can be used in treatment EXCEPT?

A. Labetalol
B. Methyldopa
C. Enalapril (Correct Answer)
D. Hydralazine

Explanation: **Explanation:** The management of hypertension in pregnancy requires drugs that are effective for the mother while being safe for the developing fetus. **Why Enalapril is the Correct Answer:** Enalapril is an **ACE Inhibitor (ACEI)**. ACE inhibitors and Angiotensin Receptor Blockers (ARBs) are strictly **contraindicated** in pregnancy (FDA Category D). Their use, especially in the second and third trimesters, is associated with **fetal renal dysgenesis**, oligohydramnios (due to decreased fetal urine production), pulmonary hypoplasia, intrauterine growth restriction (IUGR), and calvarial hypoplasia. **Analysis of Incorrect Options:** * **Labetalol (Option A):** A combined alpha and beta-blocker. It is currently considered the **first-line** drug for both chronic hypertension and acute hypertensive emergencies in pregnancy due to its rapid onset and safety profile. * **Methyldopa (Option B):** A centrally acting alpha-2 agonist. It has the longest track record of safety in pregnancy and is often the preferred drug for long-term management of **chronic hypertension** in pregnant patients. * **Hydralazine (Option C):** A direct vasodilator. It is traditionally used intravenously for the management of **acute hypertensive crises** (Severe Preeclampsia/Eclampsia) when rapid blood pressure reduction is required. **High-Yield Clinical Pearls for NEET-PG:** * **Drug of Choice (DOC) for Acute Hypertensive Crisis in Pregnancy:** IV Labetalol (Hydralazine is an alternative). * **DOC for Chronic Hypertension in Pregnancy:** Oral Methyldopa. * **Target BP in Preeclampsia:** Aim to maintain Systolic BP between 140–150 mmHg and Diastolic BP between 90–100 mmHg. * **Other Contraindicated Drugs:** Diuretics (may compromise placental perfusion), Nitroprusside (risk of fetal cyanide poisoning), and Atenolol (associated with fetal bradycardia and IUGR).

Question 328: A pregnant female with a past history of embolism in puerperium requires medical management in her next pregnancy to avoid recurrence. What is the recommended management?

A. Prophylaxis with warfarin starting at 10 weeks gestation.
B. Anticoagulation therapy with warfarin initiated after delivery. (Correct Answer)
C. The risk of thromboembolism increases by 12% in the next pregnancy.
D. No specific medical management is required.

Explanation: ### Explanation **1. Understanding the Correct Answer (Option B)** Pregnancy and the puerperium (postpartum period) are hypercoagulable states. A history of venous thromboembolism (VTE) in a previous pregnancy or puerperium significantly increases the risk of recurrence. In patients with a history of **puerperal embolism**, the highest risk period is the 6 weeks following delivery. While Low Molecular Weight Heparin (LMWH) is the preferred anticoagulant *during* pregnancy, **Warfarin** is the drug of choice for postpartum anticoagulation. It is safe during breastfeeding as it does not enter breast milk in significant amounts. Initiating anticoagulation after delivery (usually 6–12 hours after a vaginal birth or 12–24 hours after a C-section) is the standard protocol to prevent recurrence in patients with this specific history. **2. Analysis of Incorrect Options** * **Option A:** Warfarin is **teratogenic** (causing fetal warfarin syndrome/chondrodysplasia punctata) and is contraindicated between 6–12 weeks of gestation. If anticoagulation is needed during pregnancy, LMWH or UFH is used. * **Option C:** The risk of recurrence in a subsequent pregnancy for a woman with a prior VTE is approximately **2–10%**, not 12%. While the risk is elevated, the specific statistical claim in this option is inaccurate. * **Option D:** Doing nothing is incorrect. A history of VTE is one of the strongest risk factors for a repeat event; prophylaxis is mandatory to reduce maternal morbidity and mortality. **3. NEET-PG High-Yield Pearls** * **Drug of Choice (Pregnancy):** LMWH (Enoxaparin) is preferred because it does not cross the placenta and has a lower risk of Heparin-Induced Thrombocytopenia (HIT). * **Drug of Choice (Postpartum/Lactation):** Warfarin is safe for the neonate during breastfeeding. * **Highest Risk Period:** The risk of VTE is higher in the **postpartum period** than during any trimester of pregnancy. * **Management Rule:** If a patient was on LMWH during pregnancy, it is typically switched to Warfarin postpartum for a duration of at least 6 weeks.

Question 329: A young lady presents with 6 weeks of amenorrhea, nausea, vomiting, and severe abdominal pain. Her BP is 100/80 mm Hg. Examination reveals a 5 x 5 cm adnexal mass. What is the plan of management?

A. Immediate laparoscopic surgery (Correct Answer)
B. Send beta-hCG
C. Methotrexate
D. IV fluids, NPO, and observation for 4-5 days

Explanation: ### Explanation The clinical presentation of **amenorrhea, severe abdominal pain, and an adnexal mass** in a reproductive-age woman is a classic triad for **Ectopic Pregnancy**. **1. Why Option A is Correct:** The patient is symptomatic with "severe abdominal pain" and a significant adnexal mass (5 cm). In ectopic pregnancy, severe pain often indicates an impending or contained rupture (hemoperitoneum). While her BP is currently 100/80 mm Hg (compensated), the clinical urgency dictates surgical intervention. **Laparoscopy** is the gold standard for both diagnosis and treatment of ectopic pregnancy in hemodynamically stable or compensated patients. A mass >4 cm is generally a contraindication for medical management, making surgery the definitive choice. **2. Why the Other Options are Incorrect:** * **Option B (Beta-hCG):** While hCG is used for diagnosis, it should not delay management in a patient with severe pain and a large mass. The diagnosis is clinically evident here. * **Option C (Methotrexate):** Medical management with Methotrexate is contraindicated if the adnexal mass is **>3.5–4 cm**, if there is severe pain (suggesting rupture), or if fetal cardiac activity is present. This patient’s mass is 5 cm. * **Option D (Observation):** Ectopic pregnancy is a surgical emergency. Observation ("Wait and watch") is only reserved for "Expectant Management," which requires asymptomatic patients with very low, declining beta-hCG levels and small masses (<3 cm). **Clinical Pearls for NEET-PG:** * **Most common site of Ectopic Pregnancy:** Ampulla of the Fallopian tube. * **Most common site of Rupture:** Isthmus (occurs early, ~6–8 weeks). * **Gold Standard Investigation:** Transvaginal Ultrasound (TVUS) + Serum beta-hCG (Discriminatory zone: 1500–2000 mIU/ml). * **Surgical Choice:** Salpingectomy (if the other tube is healthy or the tube is ruptured) vs. Salpingostomy (if the patient desires fertility and the tube is intact).

Question 330: Macrosomia is found in all of the following conditions EXCEPT:

A. Insulin-Dependent Diabetes Mellitus (IDDM)
B. Obesity
C. Hydrocephalus (Correct Answer)
D. Postmaturity

Explanation: **Explanation:** **Macrosomia** is defined as a birth weight exceeding 4,000g or 4,500g (regardless of gestational age). It refers to a fetus that is "large for gestational age" due to excessive growth of soft tissues and skeleton. **Why Hydrocephalus is the Correct Answer:** Hydrocephalus is a condition characterized by the accumulation of cerebrospinal fluid (CSF) within the cerebral ventricles, leading to an **enlarged fetal head circumference**. While the head is abnormally large, the overall body weight of the fetus is often normal or even reduced. Therefore, hydrocephalus causes **cephalopelvic disproportion (CPD)** but does not constitute macrosomia. **Analysis of Incorrect Options:** * **IDDM (Diabetes):** Maternal hyperglycemia leads to fetal hyperinsulinemia (Pedersen Hypothesis). Insulin acts as a potent growth hormone, causing increased fat deposition and organomegaly, the classic cause of macrosomia. * **Obesity:** Maternal BMI >30 is a significant independent risk factor for macrosomia due to insulin resistance and increased nutrient availability to the fetus. * **Postmaturity:** Pregnancies exceeding 42 weeks allow for a longer growth period. Approximately 20% of post-term fetuses are macrosomic. **NEET-PG High-Yield Pearls:** * **Most common cause of macrosomia:** Maternal Diabetes (GDM or IDDM). * **Shoulder Dystocia:** The most dreaded complication of macrosomia. * **Beckwith-Wiedemann Syndrome:** A classic syndromic cause of macrosomia (omphalocele, macroglossia, gigantism). * **Investigation of Choice:** Ultrasound (AC - Abdominal Circumference is the most sensitive parameter for predicting macrosomia).

Practice by Chapter

Fetal Assessment Techniques

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Hypertensive Disorders in Pregnancy

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Intrauterine Growth Restriction

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Multiple Gestation

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Rh Isoimmunization and Other Blood Group Incompatibilities

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Intrauterine Fetal Therapy

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Prenatal Diagnosis and Genetic Counseling

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Placental Abnormalities

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Preterm Labor and Delivery

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Management of Medical Disorders in Pregnancy

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