Labor and Delivery — MCQs

A 37-week G2P1L1 is admitted with abdominal pain for 2 hours. On examination, the patient has a hemoglobin level of 9 g%, blood pressure of 150/90 mmHg, and urine albumin positivity. Palpation reveals a 36-week fetus with good fetal heart rate and regular uterine contractions with uterine tenderness on palpation. Per vaginal examination shows 6 cm dilation. Artificial rupture of membranes (ARM) reveals blood-stained amniotic fluid. What is the next line of management?

Q1145

In the context of assessing pelvic adequacy during childbirth, which diameter is considered the shortest diameter of the female pelvic inlet?

Q1146

Which Bishop score component specifically measures cervical opening (dilation)?

Q1147

Which of the following options include cardinal movements that occur during labor?

Q1148

In cases of an unstable lie of the fetus, which part of the uterus is most commonly associated?

Q1149

What is the pressure inside the uterus during the second stage of labor?

Labor and Delivery Indian Medical PG Practice Questions and MCQs

Question 1141: What is the first-line maneuver for management of shoulder dystocia?

A. 90 degree rotation of posterior shoulder
B. Emergency c-section
C. Supra pubic pressure
D. Sharp flexion of hip joints towards abdomen (Correct Answer)

Explanation: ***Sharp flexion of hip joints towards abdomen*** - This maneuver, known as the **McRoberts maneuver**, widens the anterior-posterior diameter of the **pelvis** and flattens the sacrum. - It increases the likelihood of dislodging the impacted fetal shoulder from behind the symphysis pubis. *Supra pubic pressure* - **Suprapubic pressure** is applied to the fetal anterior shoulder to dislodge it from the symphysis pubis and guide it under the maternal pubic bone. - This maneuver is typically performed *in conjunction with* the McRoberts maneuver, but the question specifies "sharp flexion of hip joints towards abdomen," which is McRoberts alone. *90 degree rotation of posterior shoulder* - This describes the **Woods screw maneuver**, which involves rotating the posterior shoulder to facilitate delivery. It is a secondary maneuver used if McRoberts and suprapubic pressure are insufficient. - The question asks for the primary management step, and the McRoberts maneuver (sharp flexion) is usually the first line of intervention. *Emergency c-section* - An **emergency C-section** is generally not indicated for the acute management of shoulder dystocia once the head has delivered, as it is a **delivery complication** happening during vaginal birth. - Management focuses on specific maneuvers to release the impacted shoulders through the vagina.

Question 1142: X-ray pelvimetry is indicated in all the following except:

A. Osteomalacia
B. Severe CPD (Correct Answer)
C. Breech presentation in vaginal delivery
D. Outlet obstruction

Explanation: ***Severe CPD*** - **X-ray pelvimetry is NOT routinely indicated** for suspected cephalopelvic disproportion (CPD) in modern obstetric practice. - CPD is best assessed through **trial of labor** with continuous monitoring rather than radiological measurements. - Studies have shown that **X-ray pelvimetry does not improve outcomes** in cases of suspected CPD and exposes the fetus to unnecessary radiation. - Clinical assessment and progress of labor are more reliable indicators for decision-making regarding mode of delivery. *Osteomalacia* - **Osteomalacia** causes defective bone mineralization leading to **bone softening and pelvic deformities** (triradiate or trefoil pelvis). - X-ray pelvimetry **is indicated** to assess the degree of **pelvic architectural distortion** that may complicate vaginal delivery. - This represents a classic indication for pelvimetry when **skeletal disease affects pelvic structure**. *Breech presentation in vaginal delivery* - In **breech presentation**, X-ray pelvimetry has historically been used to assess pelvic adequacy before attempting vaginal delivery. - It helps evaluate pelvic dimensions to determine if there is sufficient space for safe vaginal breech delivery. - Although **controversial in modern practice** (ultrasound and clinical assessment preferred), this remains a **traditional indication** in many textbooks. *Outlet obstruction* - X-ray pelvimetry **is indicated** when there is suspicion of **pelvic outlet narrowing** due to skeletal abnormalities. - Precise measurement of outlet dimensions helps determine whether vaginal delivery is feasible or if cesarean section is necessary. - This is particularly relevant in cases of **previous pelvic trauma or congenital pelvic deformities**.

Question 1143: Which of the following is NOT a prerequisite for the application of outlet forceps?

A. Uterus contracting (Correct Answer)
B. Engaged head
C. Fetal head at station +2 or lower
D. Fully dilated cervix

Explanation: ***Uterus contracting*** - Uterine contractions are important for **effective labor progression** but are not a strict prerequisite for the *application* of outlet forceps. - The decision to use outlet forceps often arises when there is a need to **expedite delivery** due to fetal distress or maternal exhaustion, regardless of ongoing contractions. *Engaged head* - An engaged head (typically defined as the widest diameter of the fetal head having passed through the pelvic inlet) is crucial for instrumental delivery to ensure that the **forceps can grasp the head properly** and effectively. - Without engagement, there's a higher risk of **failed intervention** or complications. *Fetal head at station +2 or lower* - For outlet forceps, the fetal head must be at **station +2 or lower**, meaning the leading bony point of the fetal head is at least 2 cm below the level of the ischial spines. - This ensures the head is sufficiently low in the pelvis for a **safe and successful application** of the forceps. *Fully dilated cervix* - A **fully dilated cervix** (10 cm) is an absolute prerequisite for any forceps application to prevent significant cervical trauma, hemorrhage, and other complications. - Applying forceps through a partially dilated cervix can lead to **severe maternal morbidity**.

Question 1144: A 37-week G2P1L1 is admitted with abdominal pain for 2 hours. On examination, the patient has a hemoglobin level of 9 g%, blood pressure of 150/90 mmHg, and urine albumin positivity. Palpation reveals a 36-week fetus with good fetal heart rate and regular uterine contractions with uterine tenderness on palpation. Per vaginal examination shows 6 cm dilation. Artificial rupture of membranes (ARM) reveals blood-stained amniotic fluid. What is the next line of management?

A. Observation and monitoring
B. Blood transfusion if necessary
C. Immediate cesarean section (Correct Answer)
D. Oxytocin administration

Explanation: ***Immediate cesarean section*** - The presence of **uterine tenderness**, **blood-stained amniotic fluid** following rupture of membranes, and **abdominal pain** in a patient with **hypertension and proteinuria (preeclampsia)** strongly suggests **placental abruption**. - Given the maternal and fetal instability (potential for further bleeding, risk of fetal hypoxia), **expeditious delivery** via cesarean section is indicated to prevent severe complications for both mother and fetus. - Although the patient is 6 cm dilated, the signs of abruption with preeclampsia warrant immediate operative delivery rather than awaiting vaginal delivery. *Observation and monitoring* - This approach is inappropriate and potentially dangerous given the clinical signs suggestive of **placental abruption**, which can rapidly escalate to severe hemorrhage and fetal distress. - Close monitoring alone would delay definitive intervention and increase risks. *Blood transfusion if necessary* - While a **blood transfusion** may be necessary due to the low hemoglobin level and potential for further blood loss, it is a supportive measure, not the primary management for **placental abruption**. - Addressing the cause of bleeding (delivery) is paramount, after which transfusion can be given as needed. *Oxytocin administration* - **Oxytocin** is used to augment labor or prevent postpartum hemorrhage but is **contraindicated** in cases of suspected **placental abruption** with unconfirmed fetal well-being or significant maternal bleeding. - It would increase uterine contractions which could worsen the abruption and fetal distress.

Question 1145: In the context of assessing pelvic adequacy during childbirth, which diameter is considered the shortest diameter of the female pelvic inlet?

A. Obstetric conjugate (Correct Answer)
B. Diagonal conjugate
C. True conjugate
D. None of the options

Explanation: ***Obstetric conjugate*** - The **obstetric conjugate** typically measures around **11 cm** and is the shortest anteroposterior diameter of the pelvic inlet. - It represents the distance from the **midpoint of the sacral promontory** to the **innermost aspect of the symphysis pubis**, directly related to the space available for the fetal head to engage. *Diagonal conjugate* - The **diagonal conjugate** is measured clinically by vaginal examination, from the **lower border of the symphysis pubis** to the **sacral promontory**. - It is typically **1.5-2 cm longer** than the obstetric conjugate (around 12.5 cm) and is used to *estimate* the obstetric conjugate. *True conjugate* - The **true conjugate**, also known as the anatomical conjugate, extends from the **upper border of the symphysis pubis** to the **sacral promontory**. - It is usually about **0.5-1 cm longer** than the obstetric conjugate, making it not the shortest diameter. *None of the options* - This option is incorrect because the **obstetric conjugate** is indeed the shortest diameter of the female pelvic inlet.

Question 1146: Which Bishop score component specifically measures cervical opening (dilation)?

A. Cervical consistency
B. Fetal station
C. Cervical effacement
D. Cervical dilation (Correct Answer)

Explanation: ***Cervical dilation*** - **Cervical dilation** directly refers to the opening of the cervix, measured in centimeters, and is a key component of the Bishop score. - The degree of dilation indicates the progression of labor and the readiness of the cervix for delivery. *Fetal station* - **Fetal station** measures the descent of the fetal head relative to the maternal ischial spines, not the cervical opening itself. - It helps determine how far the fetus has moved into the birth canal. *Cervical consistency* - **Cervical consistency** assesses the firmness or softness of the cervix, indicating its readiness to dilate and efface. - A softer cervix is more favorable for induction and labor, but it does not directly measure the opening. *Cervical effacement* - **Cervical effacement** measures the thinning and shortening of the cervix, expressed as a percentage. - While related to cervical readiness, it is distinct from dilation, which refers to the widening of the cervical os.

Question 1147: Which of the following options include cardinal movements that occur during labor?

A. Engagement
B. Descent, Flexion, Internal Rotation (Correct Answer)
C. Shoulder Dystocia
D. External Rotation

Explanation: ***Descent, Flexion, Internal Rotation*** - These are three of the **seven cardinal movements** of labor, which ensure the **optimal passage** of the fetus through the birth canal. - The seven cardinal movements are: **Engagement, Descent, Flexion, Internal Rotation, Extension, External Rotation (Restitution), and Expulsion**. - These movements occur sequentially or in combination, adapting the fetal head and body to the **pelvic diameters**. *Engagement* - While engagement is indeed a **cardinal movement** (the first one), the question asks which options include cardinal movements in a broader context. - Engagement alone refers to the **descent of the widest diameter** of the fetal presenting part to a level below the pelvic inlet. *Shoulder Dystocia* - **Shoulder dystocia** is a **complication of labor** where the anterior shoulder impacts behind the maternal pubic symphysis, NOT a cardinal movement. - It requires specific **obstetric maneuvers** to resolve and prevent fetal injury. *External Rotation* - **External rotation (restitution)** is indeed one of the cardinal movements, occurring after delivery of the head when it rotates to align with the shoulders. - However, in the context of this question, Option B provides a more comprehensive representation of multiple sequential cardinal movements.

Question 1148: In cases of an unstable lie of the fetus, which part of the uterus is most commonly associated?

A. Cornual region
B. Lateral wall region
C. Fundal region
D. Lower uterine segment (Correct Answer)

Explanation: ***Lower uterine segment*** - An unstable lie, where the fetus changes presentation frequently, is often associated with abnormalities of the **lower uterine segment**. - A relaxed or distended lower uterine segment due to grand multiparity or other factors can prevent the fetal head from engaging, leading to an **unstable lie**. *Cornual region* - The cornual region is where the **fallopian tubes** enter the uterus and is more commonly associated with conditions like **cornual pregnancy**, not typically an unstable fetal lie. - Pathologies here would generally lead to localized pain or rupture, not a global change in fetal position. *Lateral wall region* - Issues with the lateral uterine wall, such as **fibroids** or **abnormal placentation**, can sometimes influence fetal position but are not the primary or most common cause of an **unstable lie**. - It is less directly involved in fetal engagement and stabilization compared to the lower segment. *Fundal region* - The fundal region is the top part of the uterus, where most **uterine contractions** originate and where the bulk of the fetus typically resides in a normal presentation. - Abnormalities in the fundus are more likely to cause **malpresentations** or difficulty with contractions during labor, rather than an unstable lie itself.

Question 1149: What is the pressure inside the uterus during the second stage of labor?

A. Normal range: 100-120 mm of Hg (Correct Answer)
B. High range: 200-220 mm of Hg
C. Low range: 25 mm of Hg
D. Very high range: 300 - 400 mm of Hg

Explanation: ***Normal range: 100-120 mm of Hg*** - During the **second stage of labor**, uterine contractions become stronger and more frequent to expel the fetus, typically generating pressures in the range of **100-120 mm Hg**. - This pressure, combined with maternal pushing effort, is necessary for **fetal descent** and delivery through the birth canal. *High range: 200-220 mm of Hg* - Pressures in this range are **higher than typically observed** during normal, unassisted second-stage labor. - Such elevated pressures might indicate **hypertonic uterine dysfunction** or potentially increase the risk of uterine rupture or fetal distress if sustained. *Low range: 25 mm of Hg* - A pressure of **25 mm Hg** indicates very weak or infrequent contractions, which is insufficient for effective fetal expulsion during the second stage of labor. - This would be characteristic of **hypotonic uterine dysfunction**, often leading to a **protracted or arrested labor**. *Very high range: 300 - 400 mm of Hg* - Pressures this high are **extremely dangerous** and not compatible with a normal physiological labor process. - Such pressures would likely result in **uterine rupture**, severe fetal distress, or other life-threatening complications.

Practice by Chapter

Physiology of Labor

Practice Questions

Stages of Labor and Normal Progression

Practice Questions

Fetal Monitoring Techniques

Practice Questions

Pain Management in Labor

Practice Questions

Induction and Augmentation of Labor

Practice Questions

Operative Delivery (Forceps and Vacuum)

Practice Questions

Cesarean Section: Indications and Techniques

Practice Questions

Dystocia and Abnormal Labor Patterns

Practice Questions

Obstetric Emergencies

Practice Questions

Postpartum Hemorrhage Management

Practice Questions

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