Labor and Delivery Practice Questions

Q: Identify the CTG pattern?

Early deceleration. ***Early deceleration*** - This pattern is characterized by a gradual, symmetrical decrease in fetal heart rate (FHR) where the onset, nadir, and recovery of the deceleration coincide with the beginning, peak, and end of a uterine contraction, creating a **mirror image**. - Early decelerations are caused by **fetal head compression** during contractions, which elicits a vagal response. They are considered physiological and are not typically associated with fetal hypoxia or acidosis. *Late decelerations* - These are characterized by a gradual decrease in FHR where the nadir of the deceleration occurs **after the peak** of the uterine contraction, indicating a delayed response. - Late decelerations are a non-reassuring sign caused by **uteroplacental insufficiency**, suggesting impaired oxygen exchange to the fetus. *Variable* - These are abrupt, sharp drops in the FHR that are variable in shape (often V, U, or W-shaped) and have an inconsistent relationship with uterine contractions. - Variable decelerations are caused by **umbilical cord compression**, which obstructs blood flow to the fetus. *Normal* - A normal or reassuring CTG trace would have a baseline FHR between 110-160 bpm, moderate variability (5-25 bpm), and the presence of accelerations with or without early decelerations. - While early decelerations can be part of a normal picture, the question asks to identify the specific pattern of deceleration present, which is 'early deceleration'.

Q: Shoulder dystocia is diagnosed when the anterior shoulder fails to deliver after what time following delivery of the head?

60 sec. ***60 sec*** - Shoulder dystocia is generally defined as the failure of the shoulders to deliver spontaneously after the head is already delivered, requiring additional obstetrical maneuvers. - Using a time criterion, the condition is classified when the interval between the delivery of the fetal head and the delivery of the shoulders exceeds **60 seconds (1 minute)**. - The definition is established at **60 seconds** because delays exceeding this time significantly elevate the risk of fetal injury, particularly **brachial plexus injury**. *15 sec* - This time interval is typically too short to define true shoulder dystocia, as spontaneous delivery of the shoulders often occurs within the first 30 seconds. - A delay of **15 seconds** usually reflects normal variation in the second stage of labor. *30 sec* - While a delay greater than **30 seconds** is sometimes cited as an *increased risk* indicator, it is not the standard, universally endorsed cutoff for formally diagnosing shoulder dystocia. - Most major obstetric guidelines (ACOG and RCOG) use the **60-second** criterion. *45 sec* - Although indicative of a slower process, **45 seconds** falls short of the critical **60-second** mark used by most major obstetric guidelines to classify the complication. - Using 45 seconds could lead to over-diagnosis, while the 60-second rule ensures appropriate identification of high-risk cases.

Q: In which of the following cases is the drug below contraindicated? ![img-52.jpeg](img-52.jpeg)

Malpresentation of fetus. ***Malpresentation of fetus*** - Administering **oxytocin** with fetal malpresentation (e.g., transverse lie, breech) is contraindicated as the powerful contractions against an undeliverable fetus can cause **uterine rupture**. - It also significantly increases the risk of **fetal distress**, cord prolapse, and birth trauma, making a cesarean section the necessary and safer mode of delivery. *Heart disease in mother* - Oxytocin is not absolutely contraindicated and is often used cautiously for labor induction or to prevent **postpartum hemorrhage**, which would be especially dangerous in a patient with heart disease. - Careful monitoring is required due to its potential antidiuretic and cardiovascular effects, but its benefits in preventing hemorrhage often outweigh the risks. *Premature labour* - While **tocolytics** are used to stop premature labor, oxytocin may be used to *induce* labor if a preterm delivery is medically indicated (e.g., severe preeclampsia, fetal distress). - Therefore, prematurity itself is not a contraindication; the clinical goal (stopping vs. inducing labor) determines the appropriate medication. *Hypothyroidism* - Maternal hypothyroidism, when properly managed, is not a contraindication for the use of **oxytocin**. - The drug's mechanism of action on uterine smooth muscle is unrelated to thyroid hormone pathways.

Q: In which of the following cases is the drug below contraindicated?

Malpresentation of fetus. ***Malpresentation of fetus*** - The drug shown is **Oxytocin**, which induces strong uterine contractions. If the fetus is in an abnormal position (e.g., **transverse lie**, **breech**), forcing labor with oxytocin can lead to **uterine rupture** or **cord prolapse**. - Inducing labor in the setting of malpresentation is contraindicated because a safe vaginal delivery is not possible, and it significantly increases the risk of severe **fetal distress** and **maternal trauma**. *Heart disease in mother* - While caution is needed due to potential cardiovascular effects like **hypotension** and water retention, maternal heart disease is a relative contraindication, not an absolute one. - Oxytocin is crucial in the third stage of labor to prevent **postpartum hemorrhage**, which is a major concern in patients with cardiac conditions. *Premature labour* - Oxytocin is used to *induce* or *augment* labor, whereas in premature labor, the primary goal is often **tocolysis** (stopping contractions) with drugs like magnesium sulfate or nifedipine. - It is not a contraindication if a medically indicated preterm delivery is planned; rather, it is used when the decision to deliver has been made. *Hypothyroidism* - Maternal hypothyroidism, especially when well-controlled, is not a recognized contraindication for the use of oxytocin. - There is no known adverse interaction between thyroid status and the action of oxytocin on the uterus.

Q: In a primigravida what is a satisfactory dilation rate?

1.2 cm/hr. ***1.2 cm/hr***- This rate is the classical minimum acceptable cervical dilation velocity during the **active phase of labor** in a **primigravida**, according to the Friedmann curve.- A dilation rate falling below **1.2 cm/hr** in a primigravida is generally treated as an abnormally slow progression, or a **protraction disorder**.*0.5 cm/hr*- A dilation rate of **0.5 cm/hr** is significantly protracted and would be indicative of a high-risk labor pattern requiring re-evaluation and typically intervention, such as **oxytocin augmentation**.- Even the modern, slower labor curves (Zhang curve) do not support such a slow rate as satisfactory for the entire active phase.*0.75 cm/hr*- This rate is below the recognized minimum benchmark of **1.2 cm/hr** for a primigravida during the active phase of labor.- Persistence at this slow rate would likely lead to a diagnosis of **protracted active phase** and increase the risk of maternal and fetal complications.*1.5 cm/hr*- While **1.5 cm/hr** represents rapid and favorable cervical progression, the classical standard for the *minimum satisfactory* rate in a primigravida is established as **1.2 cm/hr**.- **1.5 cm/hr** is often cited as the minimum satisfactory rate for a **multigravida**, who generally progresses faster than a primigravida.

Q: In managing shoulder dystocia during vaginal delivery, which of the following is the correct sequence of maneuvers?

McRoberts → Rubin → Gaskin → Zavanelli. ***McRoberts → Rubin → Gaskin → Zavanelli*** - This sequence represents the general escalation of maneuvers, starting with the **McRoberts maneuver** and suprapubic pressure, which are the first-line and most effective steps. - Management proceeds logically from simple positional changes/minimal invasiveness (**Rubin's internal rotation, Gaskin position**) to the highly invasive, **last-resort Zavanelli maneuver** (cephalic replacement). *Zavanelli → Gaskin → Rubin → McRoberts* - This sequence is incorrect because the **Zavanelli maneuver** (cephalic replacement) is the absolute last step, only considered after all other maneuvers have failed due to its high associated morbidity. - The crucial and simple first-line maneuver, the **McRoberts maneuver**, is incorrectly placed as the final step in this order. *Rubin → McRoberts → Zavanelli → Gaskin* - The **McRoberts maneuver** is typically performed first along with suprapubic pressure, as it often provides adequate space and disimpaction before internal rotation techniques like Rubin. - The **Zavanelli maneuver** must always be attempted after non-invasive positional changes like the **Gaskin maneuver** (on all fours) have been tried and failed. *Gaskin → McRoberts → Rubin → Zavanelli* - The **McRoberts maneuver** is universally the first physical maneuver attempted after calling for help and assessing the need for episiotomy, so it generally precedes the **Gaskin maneuver**. - While effective, the Gaskin maneuver (assuming the all-fours position) requires repositioning the mother and is usually attempted after the simpler positional change of McRoberts fails.

Q: A 32-year-old G2P1 woman with a previous cesarean section is undergoing a trial of vaginal delivery at 39 weeks. She is in active labor with 8 cm cervical dilation and fetal station at -1. Continuous fetal monitoring reveals fetal bradycardia, and maternal pulse is 110/min. What is the most appropriate next step in management?

Emergency cesarean section. ***Emergency cesarean section*** - The combination of **fetal bradycardia** (acute distress) and maternal **tachycardia** (suggesting hemorrhage/shock) in a patient undergoing **trial of labor after C-section (TOLAC)** is highly indicative of **uterine rupture**. - Uterine rupture is a **Category I obstetric emergency** requiring immediate delivery to minimize fetal hypoxia/demise and manage maternal bleeding. *Continue monitoring and wait* - Waiting is dangerous and contraindicated in the presence of non-reassuring fetal tracing (bradycardia) combined with signs pathognomonic for **uterine rupture** (maternal tachycardia). - Any delay in delivery and surgical intervention significantly increases the risk of associated maternal and fetal **morbidity and mortality**. *Administer oxytocin to augment labor* - Oxytocin is absolutely contraindicated when **uterine rupture** is suspected, as increasing uterine contractility will exacerbate the tear, potentially worsening fetal compromise and maternal hemorrhage. - Augmentation would be appropriate only if labor was prolonged and vital signs were reassuring, which is not the case here. *Perform operative vaginal delivery* - The fetal station is still high at **-1**, making an immediate or easy operative vaginal delivery unlikely or risky. - The primary goal is immediate access to the uterus to control bleeding and deliver the fetus, which is best achieved via an **emergency laparotomy** (C-section).

Q: Identify the maneuver shown in the image.

Leopold maneuvers. ***Leopold maneuvers*** - **Leopold maneuvers** are the comprehensive set of **four systematic abdominal palpation techniques** used to assess fetal position, presentation, lie, and engagement. - This is the correct answer as it encompasses **all four maneuvers** shown in the image, rather than referring to just one specific technique. *Pawlik grip* - This refers specifically to the **third Leopold maneuver** only, which assesses the presenting part at the pelvic inlet. - Too narrow in scope as it doesn't encompass the complete systematic examination shown. *Fundal grip* - This refers specifically to the **first Leopold maneuver** only, which determines the fetal part occupying the fundus. - Incorrect because it represents only one component of the complete four-step examination technique. *Pelvic grip* - This refers specifically to the **fourth Leopold maneuver** only, which assesses fetal engagement and descent into the pelvis. - Too specific as it doesn't represent the entire systematic abdominal palpation sequence demonstrated.

Question 1

Identify the CTG pattern?

Accepted Answer

Early deceleration

Answer

Late deceleration

Answer

Variable

Answer

Normal

Question 2

Shoulder dystocia is diagnosed when the anterior shoulder fails to deliver after what time following delivery of the head?

Accepted Answer

60 sec

Answer

15 sec

Answer

45 sec

Answer

30 sec

Question 3

In which of the following cases is the drug below contraindicated? ![img-52.jpeg](img-52.jpeg)

Accepted Answer

Malpresentation of fetus

Answer

Heart disease in mother

Answer

Premature labour

Answer

Hypothyroidism

Question 4

In which of the following cases is the drug below contraindicated?

Accepted Answer

Malpresentation of fetus

Answer

Premature labour

Answer

Hypothyroidism

Answer

Heart disease in mother

Question 5

In a primigravida what is a satisfactory dilation rate?

Accepted Answer

1.2 cm/hr

Answer

1.5 cm/hr

Answer

0.5 cm/hr

Answer

0.75 cm/hr

Question 6

A 28-year-old primigravida at 38 weeks gestation presents in active labor. Fetal heart rate monitoring shows variable decelerations with each contraction. Cervix is 6 cm dilated, and the umbilical cord is palpable alongside the presenting part. What is the most appropriate immediate management?

Accepted Answer

Manual elevation of presenting part and immediate cesarean section

Answer

Continue labor with continuous fetal monitoring

Answer

Administer tocolytics and position patient in Trendelenburg

Answer

Attempt to replace the cord above the presenting part

Question 7

In managing shoulder dystocia during vaginal delivery, which of the following is the correct sequence of maneuvers?

Accepted Answer

McRoberts → Rubin → Gaskin → Zavanelli

Answer

Gaskin → McRoberts → Rubin → Zavanelli

Answer

Zavanelli → Gaskin → Rubin → McRoberts

Answer

Rubin → McRoberts → Zavanelli → Gaskin

Question 8

A 32-year-old G2P1 woman with a previous cesarean section is undergoing a trial of vaginal delivery at 39 weeks. She is in active labor with 8 cm cervical dilation and fetal station at -1. Continuous fetal monitoring reveals fetal bradycardia, and maternal pulse is 110/min. What is the most appropriate next step in management?

Accepted Answer

Emergency cesarean section

Answer

Administer oxytocin to augment labor

Answer

Perform operative vaginal delivery

Answer

Continue monitoring and wait

Question 9

A 38-week pregnant woman in active labor with 5 cm cervical dilatation and regular contractions suddenly develops umbilical cord prolapse. What is the most appropriate immediate management?

Accepted Answer

Manually elevate the presenting part, fill the bladder retrogradely, and prepare for emergency cesarean section

Answer

Perform vaginal packing to protect the cord

Answer

Administer oxytocin to expedite labor

Answer

Wait and observe

Question 10

Identify the maneuver shown in the image.

Accepted Answer

Leopold maneuvers

Answer

Pawlik grip

Answer

Fundal grip

Answer

Pelvic grip

Labor and Delivery — MCQs

Labor and Delivery — MCQs

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