Labor and Delivery Practice Questions

Q: A 22-year-old G3P2 presented with profuse bleeding after a normal spontaneous vaginal delivery. Physical examination reveals a boggy uterus, and a bedside sonogram indicates the presence of retained placental tissue. What is the most probable diagnosis?

Retained placental tissue. ### Explanation **Correct Answer: A. Retained placental tissue** The clinical presentation of profuse postpartum hemorrhage (PPH) associated with a **boggy uterus** and **sonographic evidence** of intrauterine contents points directly to retained placental tissue. While uterine atony is the most common cause of PPH, the presence of retained fragments prevents the uterus from contracting effectively (secondary atony), leading to a boggy feel on palpation. Ultrasound is the gold standard for confirming the presence of these fragments. **Why other options are incorrect:** * **B. Uterine atony:** While a "boggy uterus" is the hallmark of atony, the specific mention of a bedside sonogram showing placental tissue makes "Retained placental tissue" the more specific and accurate diagnosis. Atony is often the *result* of the retained tissue. * **C. Placental abruption:** This is a cause of antepartum hemorrhage (bleeding before delivery), characterized by painful vaginal bleeding and a "woody hard" uterus, not a boggy one postpartum. * **D. Uterine inversion:** This presents with sudden shock out of proportion to blood loss and a characteristic "fundal notch" or a mass protruding through the cervix/vagina. The uterus would not be palpable in its normal abdominal position. **NEET-PG High-Yield Pearls:** * **The 4 Ts of PPH:** **T**one (Atony - 80%), **T**issue (Retained products), **T**rauma (Lacerations), and **T**hrombin (Coagulopathy). * **Management:** For retained placenta, manual removal or suction/evacuation is required. * **Active Management of Third Stage of Labor (AMTSL):** Reduces the risk of PPH by 60%. It includes prophylactic uterotonics (Oxytocin 10 IU IM), controlled cord traction, and uterine massage. * **Uterine Atony vs. Trauma:** If the uterus is **firm** but bleeding persists, suspect a traumatic cause (cervical/vaginal tear). If the uterus is **boggy**, suspect atony or retained tissue.

Q: What is the commonest cause of death in breech delivery?

Intracranial hemorrhage. **Explanation:** In breech delivery, the **commonest cause of death is intracranial hemorrhage**. This occurs primarily due to the rapid compression and subsequent decompression of the fetal head as it passes through the birth canal. Unlike a vertex presentation, where the head has hours to undergo "molding," the after-coming head in a breech delivery must engage and pass through the pelvis quickly. This sudden pressure change can lead to the tearing of the **tentorium cerebelli** or the **great vein of Galen**, resulting in fatal intracranial bleeding. **Analysis of Options:** * **A. Intracranial hemorrhage (Correct):** The lack of gradual molding leads to dural tears and vascular rupture. It remains the leading cause of neonatal mortality in vaginal breech births. * **B & C. Atlantoaxial dislocation/fracture:** These are traumatic injuries caused by excessive traction or hyperextension of the fetal neck (e.g., during the Prague maneuver). While specific to breech complications, they are significantly less common than intracranial trauma. * **D. Aspiration:** While breech infants are at risk of inhaling amniotic fluid or meconium if the breathing reflex is triggered while the head is still in the birth canal, it is a less frequent cause of immediate death compared to hemorrhage. **High-Yield Clinical Pearls for NEET-PG:** * **Most common cause of fetal death overall in breech:** Birth asphyxia (often due to cord prolapse or head entrapment). * **Most common cause of traumatic death:** Intracranial hemorrhage. * **Cord Prolapse:** More common in footling (15%) and complete breech (5%) than in frank breech (0.5%). * **Safe Delivery:** To prevent intracranial trauma, the **Burn-Marshall maneuver** or **Piper’s forceps** are used to control the delivery of the after-coming head and prevent sudden decompression.

Q: Which of the following is NOT true regarding Duncan's mechanism of placental separation?

It is the most common method of placental separation.. **Explanation:** The third stage of labor involves the separation and expulsion of the placenta. There are two primary mechanisms of placental separation: **Schultze** and **Duncan**. **Why Option D is the correct answer:** Option D is incorrect (and thus the right answer for this "NOT true" question) because **Schultze mechanism** is the most common method, occurring in approximately **80%** of cases. In Schultze, separation begins at the center of the placenta, leading to the formation of a retroplacental hematoma that aids in complete detachment. Duncan’s mechanism occurs in only about 20% of cases. **Analysis of other options:** * **Option A & B:** In **Duncan’s mechanism**, separation starts at the **periphery (margins)**. Because the edges detach first, the placenta slides down sideways, and the **maternal surface** (rough, cotyledonous side) presents first at the vulva. * **Option C:** Duncan’s mechanism is associated with **more visible blood loss** during the process. Unlike Schultze, where the blood is trapped behind the membranes (retroplacental) until the placenta is delivered, in Duncan’s, the blood escapes immediately from the margins. **NEET-PG High-Yield Pearls:** * **Schultze Mechanism (80%):** "Center first." Fetal surface (shiny side) presents. Less external bleeding. * **Duncan Mechanism (20%):** "Edges first." Maternal surface (dirty/rough side) presents. More external bleeding. * **Memory Aid:** **S**chultze = **S**hiny (Fetal surface) and **S**afe (less bleeding). **D**uncan = **D**irty (Maternal surface).

Q: Which type of pelvis is associated with the lack of a single pelvic ala?

Naegele's pelvis. **Explanation:** The correct answer is **Naegele’s pelvis**. This is a rare type of contracted pelvis characterized by the **congenital absence or imperfect development of one sacral ala (wing)**. This unilateral defect leads to an oblique contraction of the pelvic brim, as the sacrum fuses with the ilium on the affected side (synostosis), resulting in a tilted and narrowed birth canal. **Analysis of Options:** * **Robert’s Pelvis:** This is characterized by the **bilateral absence** of both sacral alae. It results in a transversely contracted pelvis that is extremely narrow, usually necessitating a Cesarean section. * **Rachitic Pelvis:** Caused by Vitamin D deficiency in childhood (Rickets). It typically features a shortened anteroposterior (AP) diameter and a widened transverse diameter, giving the inlet a "kidney-shaped" appearance. * **Osteomalacic Pelvis:** Caused by adult Vitamin D deficiency. The pelvic bones become soft and are pushed inward by the weight of the body, resulting in a "triradiate" or "clover-leaf" shaped pelvic brim. **NEET-PG High-Yield Pearls:** * **Naegele’s = Unilateral** (One ala missing). * **Robert’s = Bilateral** (Both alae missing). * **Rachitic Pelvis** is associated with a **reniform (kidney-shaped)** inlet and an increased intertuberous diameter (everted ischial tuberosities). * **Osteomalacic Pelvis** is associated with a **triradiate** inlet. * Both Naegele’s and Robert’s pelvis are extremely rare but are high-yield "spotter" questions for pelvic abnormalities in competitive exams.

Q: What marks the beginning and end of the second stage of labor?

Full cervical dilation to delivery of the fetus. ### Explanation The correct answer is **D. Full cervical dilation to delivery of the fetus.** Labor is clinically divided into four distinct stages. The **second stage** is defined as the interval between **full cervical dilation (10 cm)** and the **complete expulsion of the fetus**. This stage represents the period of active maternal pushing and fetal descent through the birth canal. #### Analysis of Options: * **Option A:** Rupture of membranes (ROM) is an event that can occur at any time (pre-labor or during the first stage) and does not define the onset of a specific stage. * **Option B:** This describes the **first stage of labor**, which begins with regular, painful uterine contractions and ends when the cervix is fully dilated. * **Option C:** While the fetus is delivered at the end of the second stage, the starting point is cervical dilation, not the rupture of membranes. #### Clinical Pearls for NEET-PG: * **Duration:** In primigravida, the second stage typically lasts **2 hours** (3 hours with epidural). In multigravida, it lasts **1 hour** (2 hours with epidural). Prolongation beyond these limits is a high-yield diagnostic criterion for "Prolonged Second Stage." * **Phases:** The second stage is further divided into the **Propulsive phase** (from full dilation until the head touches the pelvic floor) and the **Expulsive phase** (maternal bearing down efforts). * **Mechanism:** The cardinal movements of labor (engagement, descent, flexion, internal rotation, extension, restitution, and external rotation) primarily occur during this stage. * **Third Stage:** Begins after the delivery of the fetus and ends with the **delivery of the placenta**.

Q: Misoprostol has been found to be effective in all of the following, EXCEPT:

Menorrhagia. **Explanation:** **Misoprostol** is a synthetic **Prostaglandin E1 (PGE1) analogue**. Its primary pharmacological actions include stimulating uterine contractions (oxytocic effect) and softening the cervix (cervical ripening). **Why Menorrhagia is the Correct Answer:** Menorrhagia (heavy menstrual bleeding) is primarily managed by reducing menstrual blood flow through antifibrinolytics (Tranexamic acid), NSAIDs, or hormonal therapy (OCPs, Progestogens, or LNG-IUS). Misoprostol causes uterine contractions but does not effectively reduce the volume of menstrual blood loss; therefore, it has no clinical role in treating menorrhagia. **Analysis of Other Options:** * **Medical Method of Abortion (MMA):** Misoprostol is used in combination with Mifepristone. It induces uterine contractions to expel the products of conception. * **Induction of Labor:** It is used for cervical ripening and induction, especially in cases of intrauterine fetal death (IUFD) or when the Bishop score is unfavorable. * **Prevention of PPH:** According to WHO guidelines, 600 µg of oral Misoprostol is an effective alternative for the active management of the third stage of labor (AMTSL) when injectable Oxytocin is unavailable. **High-Yield Clinical Pearls for NEET-PG:** * **Route of Administration:** Misoprostol can be given orally, sublingually, vaginally, or rectally. Sublingual has the fastest onset. * **PPH Dosage:** 600 µg orally for prevention; 800 µg sublingually for treatment. * **Side Effects:** The most common side effects are **shivering and pyrexia** (fever). * **Contraindication:** Avoid for induction of labor in women with a previous cesarean section due to the high risk of **uterine rupture**.

Q: Active management of the third stage of labor includes all of the following except?

Uterine massage. **Explanation:** The **Active Management of the Third Stage of Labor (AMTSL)** is a bundle of interventions designed to facilitate the delivery of the placenta and prevent Postpartum Hemorrhage (PPH). According to the latest WHO and FIGO guidelines, the three core components of AMTSL are: 1. **Administration of a Uterotonic agent:** Oxytocin (10 IU IM/IV) is the drug of choice. 2. **Controlled Cord Traction (CCT):** Also known as the Brandt-Andrews maneuver, used to deliver the placenta once the uterus has contracted. 3. **Delayed Cord Clamping:** (Performed 1–3 minutes after birth). **Why "Uterine Massage" is the correct answer:** While uterine massage is a vital step in the *monitoring* phase after the placenta is delivered (to ensure the uterus remains contracted), it is **no longer recommended as a routine component of AMTSL** before placental delivery. Research shows it does not significantly reduce blood loss when a uterotonic is already administered. **Analysis of other options:** * **Oxytocin infusion (D):** This is the gold standard uterotonic for AMTSL. * **Ergometrine after anterior shoulder delivery (A):** While Oxytocin is preferred, Ergometrine is a potent uterotonic used in AMTSL (provided there are no contraindications like hypertension). Traditionally, uterotonics were given with the delivery of the anterior shoulder, though current guidelines suggest giving them immediately after the baby is born. * **Controlled Cord Traction (C):** This remains a standard component of AMTSL to shorten the third stage and reduce blood loss. **High-Yield NEET-PG Pearls:** * **Drug of Choice for PPH Prophylaxis:** Oxytocin (10 IU). * **Most common cause of PPH:** Uterine Atony (70%). * **Brandt-Andrews Maneuver:** Applying downward traction on the cord while the other hand applies suprapubic pressure (upward) to prevent uterine inversion. * **Timing:** AMTSL reduces the risk of PPH by approximately 60%.

Q: True labor pains include all of the following except:

Show of vagina. **Explanation:** The diagnosis of **True Labor** is based on the presence of regular, painful uterine contractions that result in progressive cervical changes and the descent of the fetus. **Why "Show of vagina" is the correct answer (the exception):** The term "Show" (or bloody show) refers to the discharge of the cervical mucus plug mixed with a small amount of blood as the cervix begins to efface. While "Show" is a **premonitory sign** of labor and often precedes it, it is not a defining characteristic of true labor itself. Many women experience "show" hours or even days before active labor begins. Therefore, it is not a mandatory component of the definition of true labor. **Analysis of other options:** * **Painful uterine contractions:** True labor is characterized by rhythmic, involuntary contractions that increase in frequency, intensity, and duration over time. Unlike False Labor (Braxton Hicks), these are not relieved by rest or sedation. * **Progressive descent of presenting part:** As labor advances, the fetus moves down the birth canal. This descent is a hallmark of effective labor. * **Cervical dilatation:** This is the most objective sign of true labor. True labor must involve progressive effacement (thinning) and dilatation (opening) of the cervix. **NEET-PG High-Yield Pearls:** * **True vs. False Labor:** False labor pains are irregular, confined to the lower abdomen, and do not cause cervical changes. * **Friedman’s Curve:** Used to track the progress of labor based on cervical dilatation and fetal descent. * **Active Phase:** In modern obstetrics (WHO/ACOG), the active phase of labor is now considered to start at **6 cm** of cervical dilatation.

Q: Blood will interfere with the nitrazine test for detecting ruptured membranes because:

It is alkaline. The **Nitrazine test** is a pH-based diagnostic tool used to confirm the Premature Rupture of Membranes (PROM). It utilizes nitrazine (phenaphthazine) paper, which changes color based on the acidity or alkalinity of the vaginal environment. ### **Explanation of the Correct Answer** The normal vaginal pH during pregnancy is typically **acidic (4.5 to 5.5)**, which keeps the nitrazine paper yellow. **Amniotic fluid is alkaline (pH 7.0 to 7.5)**; when it is present, the paper turns blue. **Blood is also alkaline (pH 7.35 to 7.45)**. Therefore, if blood is present in the vaginal vault (due to bloody show or antepartum hemorrhage), it will cause a **false-positive result** by turning the paper blue, even in the absence of amniotic fluid. ### **Analysis of Incorrect Options** * **Option A:** Blood is not acidic; it is slightly alkaline. If it were acidic, it would not change the color of the nitrazine paper and thus would not interfere with the test. * **Options C and D:** The nitrazine test is strictly a **pH indicator test**. While sodium chloride (NaCl) is the basis for the **Fern Test** (where NaCl crystallizes into a palm-leaf pattern), it does not influence the color change on nitrazine paper. ### **Clinical Pearls for NEET-PG** * **False Positives:** Caused by blood, semen (alkaline), antiseptic vapors, or bacterial vaginosis (which increases vaginal pH). * **False Negatives:** Occur if the rupture is remote (fluid has washed away) or if there is a very small amount of leakage. * **Confirmatory Test:** The **Fern Test** is more specific than the Nitrazine test. The "Gold Standard" for diagnosis remains the direct visualization of fluid pooling in the posterior fornix during a sterile speculum exam.

Question 1

A 22-year-old G3P2 presented with profuse bleeding after a normal spontaneous vaginal delivery. Physical examination reveals a boggy uterus, and a bedside sonogram indicates the presence of retained placental tissue. What is the most probable diagnosis?

Accepted Answer

Retained placental tissue

Answer

Uterine atony

Answer

Placental abruption

Answer

Uterine inversion

Question 2

What is the commonest cause of death in breech delivery?

Accepted Answer

Intracranial hemorrhage

Answer

Atlantoaxial dislocation

Answer

Atlantoaxial fracture

Answer

Aspiration

Question 3

Which of the following is NOT true regarding Duncan's mechanism of placental separation?

Accepted Answer

It is the most common method of placental separation.

Answer

Separation occurs from the maternal surface.

Answer

The maternal surface presents at the vulva.

Answer

There is typically more blood loss.

Question 4

Which type of pelvis is associated with the lack of a single pelvic ala?

Accepted Answer

Naegele's pelvis

Answer

Robe's pelvis

Answer

Rachitic pelvis

Answer

Osteomalacic pelvis

Question 5

What marks the beginning and end of the second stage of labor?

Accepted Answer

Full cervical dilation to delivery of the fetus

Answer

Onset of contractions to rupture of membranes

Answer

Onset of contractions to full cervical dilation

Answer

Rupture of membranes to delivery of the fetus

Question 6

Misoprostol has been found to be effective in all of the following, EXCEPT:

Accepted Answer

Menorrhagia

Answer

Medical method of abortion

Answer

Induction of labor

Answer

Prevention of postpartum hemorrhage (PPH)

Question 7

Active management of the third stage of labor includes all of the following except?

Accepted Answer

Uterine massage

Answer

Ergometrine after anterior shoulder delivery

Answer

Controlled cord traction

Answer

Oxytocin infusion

Question 8

True labor pains include all of the following except:

Accepted Answer

Show of vagina

Answer

Painful uterine contractions

Answer

Progressive descent of presenting part

Answer

Cervical dilatation

Question 9

Blood will interfere with the nitrazine test for detecting ruptured membranes because:

Accepted Answer

It is alkaline

Answer

It is acidic

Answer

It contains increased amounts of sodium chloride

Answer

It contains decreased amounts of sodium chloride

Question 10

Which of the following clinical conditions is not an indication for induction of labor?

Accepted Answer

Complete placenta previa

Answer

Intrauterine fetal demise

Answer

Severe preeclampsia at 36 weeks

Answer

Chorioamnionitis

Labor and Delivery — MCQs

Labor and Delivery — MCQs

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