Labor and Delivery Practice Questions

Q: What is the management for breech presentation with a footling?

Cesarean section. **Explanation:** The management of breech presentation depends significantly on the specific type of breech. In **Footling Breech**, one or both feet are the presenting part below the buttocks. **Why Cesarean Section is the Correct Choice:** Footling breech is a contraindication for vaginal delivery. The primary risk is **Umbilical Cord Prolapse**, as the feet do not provide a sufficient seal against the cervix (unlike the broad surface of the buttocks in frank breech or the head in vertex presentation). When the membranes rupture, the cord can easily slip past the feet. Additionally, the small diameter of the feet can lead to the delivery of the lower body through an incompletely dilated cervix, resulting in **entrapment of the after-coming head**, which is a life-threatening emergency. Therefore, a planned Cesarean section is the safest mode of delivery. **Analysis of Incorrect Options:** * **A. Vaginal Delivery:** Generally reserved for Frank or Complete breech under strict criteria (e.g., Term gestation, estimated weight 2.5–3.5kg, flexed head). It is avoided in footling breech due to the high risk of cord prolapse. * **C. Forceps Delivery:** Piper’s forceps are used specifically for the **after-coming head** in a vaginal breech delivery, not as a primary method to manage the presentation itself. * **D. Internal Podalic Version:** This is a procedure used almost exclusively for the delivery of the **second twin** (non-vertex) and is not indicated for a singleton footling breech. **NEET-PG High-Yield Pearls:** * **Most common breech:** Frank breech (thighs flexed, knees extended). * **Highest risk of cord prolapse:** Footling breech (up to 15-18%). * **Prerequisite for Vaginal Breech:** The head must be flexed (diagnosed via USG) to prevent hyperextension ("Star-gazing fetus"). * **Term Breech Trial (2000):** Established that planned CS is safer than vaginal birth for term breech fetuses.

Q: Which of the following is NOT an indication for oxytocin?

Spontaneous premature labor. Oxytocin is a potent uterotonic hormone synthesized in the hypothalamus and released by the posterior pituitary. Its primary physiological roles are stimulating uterine contractions and the milk-ejection reflex. **Explanation of the Correct Answer:** **Option A (Spontaneous premature labor)** is the correct answer because oxytocin is **contraindicated** in this scenario. In preterm labor, the clinical goal is to stop contractions (tocolysis) to prolong pregnancy, whereas oxytocin stimulates contractions. Administering oxytocin would accelerate the delivery of a premature infant, increasing the risk of neonatal morbidity. **Explanation of Incorrect Options:** * **Option B (Postpartum hemorrhage):** Oxytocin is the first-line drug for the prevention and management of PPH. It causes rhythmic contractions of the upper uterine segment, compressing blood vessels at the placental site (living ligatures). * **Option C (Uterine inertia):** This refers to weak or infrequent uterine contractions during labor. Oxytocin is the drug of choice for **augmentation of labor** to correct hypotonic uterine dysfunction. * **Option D (Breast engorgement):** While oxytocin doesn't increase milk production (prolactin's role), it causes contraction of **myoepithelial cells** in the mammary alveoli. Intranasal oxytocin can be used to facilitate the milk-ejection reflex, relieving engorgement caused by "let-down" failure. **High-Yield NEET-PG Pearls:** * **Half-life:** Very short (3–5 minutes), requiring continuous IV infusion for labor induction. * **Side Effects:** Water intoxication (due to its ADH-like antidiuretic effect) and uterine rupture if used inappropriately. * **Contraindications:** Cephalopelvic disproportion (CPD), fetal distress, and previous classical cesarean section.

Q: Which of the following is the engaging diameter in the fetus in a left occiput anterior (LOA) position?

Suboccipitobregmatic. ### Explanation In the **Left Occiput Anterior (LOA)** position, the fetal head is in a state of **complete flexion**. When the head is well-flexed, the smallest possible diameter of the fetal skull presents to the pelvic inlet. **1. Why Suboccipitobregmatic is Correct:** The **Suboccipitobregmatic (SOB)** diameter extends from the undersurface of the occiput (at the junction with the neck) to the center of the bregma (anterior fontanelle). It measures approximately **9.5 cm**. This is the engaging diameter in all vertex presentations where the head is fully flexed (OA, LOA, ROA). **2. Analysis of Incorrect Options:** * **Mentovertical (13.5 cm):** This is the engaging diameter in **Brow presentation**, where the head is midway between flexion and extension. It is the largest diameter of the fetal head and usually results in obstructed labor. * **Submentobregmatic (9.5 cm):** This is the engaging diameter in **Face presentation** when the head is completely extended. While the measurement is the same as SOB, the landmark (mentum/chin) is different. * **Sternobregmatic:** This is not a standard obstetric diameter used to describe fetal head engagement. **3. Clinical Pearls for NEET-PG:** * **Vertex Presentation (Well-flexed):** Engaging diameter is **Suboccipitobregmatic (9.5 cm)**. * **Vertex Presentation (Deflexed/Military):** Engaging diameter is **Occipitofrontal (11.5 cm)**. * **Brow Presentation:** Engaging diameter is **Mentovertical (13.5 cm)**. * **Face Presentation:** Engaging diameter is **Submentobregmatic (9.5 cm)**. * **LOA** is considered the most common "ideal" position for delivery as it facilitates the normal mechanism of labor.

Q: What is the management for a breech presentation with an extended arm?

Lovset's maneuver. **Explanation:** In a breech delivery, the **Lovset’s maneuver** is the specific technique used to deliver the arms when they are extended or impacted above the pelvic brim. The maneuver involves grasping the fetus by the pelvic girdle and rotating the body 180 degrees while maintaining downward traction. This rotation brings the posterior arm under the symphysis pubis, allowing it to be delivered. The body is then rotated 180 degrees in the opposite direction to deliver the other arm. **Analysis of Options:** * **Pinard’s Maneuver (B):** This is used to bring down the legs in a **frank breech** presentation by applying pressure to the popliteal fossa to flex the knee. * **Cesarean Section (A):** While many breech presentations are delivered via C-section today, the question asks for the specific management of a procedural complication (extended arms) during a vaginal breech delivery. * **Dührssen’s Incision (D):** These are incisions made in the cervix at the 2, 6, and 10 o'clock positions to facilitate the delivery of an **entrapped after-coming head** when the cervix is not fully dilated. **Clinical Pearls for NEET-PG:** * **Mauriceau-Smellie-Veit Maneuver:** The gold standard for delivering the **after-coming head** (promotes flexion). * **Burns-Marshall Method:** Another technique for the after-coming head where the baby is allowed to hang to encourage flexion by gravity. * **Prerequisites for Vaginal Breech:** Estimated fetal weight 2.5–3.5 kg, flexed head, and a frank or complete breech presentation. * **Nuchal Arm:** A more severe complication than an extended arm, where the arm is wrapped behind the fetal neck; it also requires Lovset’s maneuver for resolution.

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.

Question 1

A 37-week primigravida presents with irregular uterine contractions. On examination, the cervix is 1 cm dilated and poorly effaced. What is the most appropriate management?

Accepted Answer

Sedation and wait

Answer

Cesarean section

Answer

Amniotomy

Answer

Oxytocin drip

Question 2

What is the management for breech presentation with a footling?

Accepted Answer

Cesarean section

Answer

Vaginal delivery

Answer

Forceps delivery

Answer

Internal podalic version

Question 3

Which of the following is NOT an indication for oxytocin?

Accepted Answer

Spontaneous premature labor

Answer

Postpartum hemorrhage

Answer

Uterine inertia

Answer

Breast engorgement due to inefficient milk ejection reflex

Question 4

Which of the following is the engaging diameter in the fetus in a left occiput anterior (LOA) position?

Accepted Answer

Suboccipitobregmatic

Answer

Mentovertical

Answer

Submentobregmatic

Answer

Sternobregmatic

Question 5

What is the management for a breech presentation with an extended arm?

Accepted Answer

Lovset's maneuver

Answer

Cesarean section

Answer

Pinard's maneuver

Answer

Dührssen's incision

Question 6

A 25-year-old woman, G2P1L1, presents at 37 weeks gestation with mild labor pains. On examination, she has a breech presentation with a closed os and a partially effaced cervix. What is the next management step?

Accepted Answer

Schedule an urgent ultrasound

Answer

Check operating theatre and prepare for external cephalic version

Answer

Wait and observe for spontaneous breech vaginal delivery

Answer

Schedule an emergency caesarean section

Question 7

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 8

What is the commonest cause of death in breech delivery?

Accepted Answer

Intracranial hemorrhage

Answer

Atlantoaxial dislocation

Answer

Atlantoaxial fracture

Answer

Aspiration

Question 9

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 10

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

Labor and Delivery — MCQs

Labor and Delivery — MCQs

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