Labor and Delivery Practice Questions

Q: Maternal supine hypotension syndrome can be minimized by

Left-Hip elevation. ***Left-Hip elevation*** - **Left-hip elevation** (left lateral tilt) is the **standard clinical method** to prevent and minimize supine hypotension syndrome in pregnant patients. - Placing a wedge or pillow under the patient's **left hip** to create a 15-degree tilt displaces the gravid uterus off the **inferior vena cava** and **aorta**, preventing aortocaval compression. - This simple positioning maneuver improves **venous return**, maintains **cardiac output**, and prevents the hypotension that occurs when the pregnant uterus compresses the great vessels in the supine position. - This is the **recommended practice** in labor, delivery, and during surgical procedures in pregnant patients. *Left-Uterine displacement* - While left uterine displacement is the **physiological mechanism** that relieves aortocaval compression, it describes the *outcome* rather than the practical intervention. - In clinical practice, uterine displacement is achieved through positioning techniques like **left-hip elevation** or **left lateral tilt**, or by manual displacement during procedures. - This option describes what happens anatomically rather than the specific clinical action taken. *General anaesthesia* - **General anesthesia** does not prevent supine hypotension syndrome; in fact, anesthetic agents can cause **vasodilation** and exacerbate hypotension. - Patient positioning (such as left-hip elevation) is still required during general anesthesia to prevent aortocaval compression. *Regional anaesthesia* - **Regional anesthesia** (epidural or spinal) causes **sympathetic blockade** leading to vasodilation, which can worsen hypotension rather than prevent it. - Patients receiving regional anesthesia still require proper positioning with left-hip elevation to prevent supine hypotension syndrome.

Q: Incomplete uterine rupture is defined as?

Disruption of scar with peritoneum intact. ***Disruption of scar with peritoneum intact*** - An **incomplete uterine rupture** is characterized by a tear in the uterine wall that does not extend through the serosal layer (peritoneum). - This means the **peritoneum remains intact**, containing the rupture within the uterine muscle. *Disruption of entire length of scar* - This description is too general and does not specify whether the peritoneum is involved, which is crucial for distinguishing between complete and incomplete rupture. - The extent of the scar disruption alone does not define completeness without mentioning the **peritoneal integrity**. *Disruption of scar including peritoneum* - This definition describes a **complete uterine rupture**, where the tear extends through all layers of the uterine wall, including the serosa. - In a complete rupture, there is direct communication between the uterine cavity and the **peritoneal cavity**. *Disruption of part of scar* - This refers to the **extent of the tear** within the scar, but it does not specify whether the tear penetrates the peritoneum. - Therefore, it doesn't adequately differentiate between incomplete or complete rupture based solely on the scar length involved.

Q: Which of the following statements is TRUE regarding obstetric inversion?

It is usually acute. ***It is usually acute*** - Obstetric inversion, particularly **uterine inversion**, is almost always an acute event occurring **immediately postpartum**. - Its rapid onset contributes to significant **hemorrhage** and **shock**, making it an obstetric emergency. *In majority, it is spontaneous in nature* - The majority of uterine inversions are **iatrogenic**, often triggered by improper management of the third stage of labor, such as excessive **cord traction** or fundal pressure. - While spontaneous inversion can occur, it is much less common than cases associated with obstetric interventions. *It is usually insidious in onset* - Obstetric inversion is characterized by a **sudden** and dramatic presentation, typically involving rapid blood loss, severe pain, and shock. - An insidious or gradual onset is not characteristic of acute uterine inversion. *It is usually incomplete* - While varying degrees of inversion exist, a significant proportion, particularly those causing severe symptoms, are **complete**, with the fundus protruding through the cervix or even outside the introitus. - Even in incomplete cases, the fundus has invaginated significantly, causing a palpable depression and critical symptoms.

Q: Shoulder dystocia is managed by all of the following except:-

Fundal pressure by an able nurse. ***Fundal pressure by an able nurse*** - **Fundal pressure** is contraindicated in shoulder dystocia because it can worsen the impaction of the anterior shoulder against the symphysis pubis and potentially lead to uterine rupture or fetal injury. - Applying pressure from above pushes the fetus further into the birth canal obstruction, increasing the risk of **fetal asphyxia** and **brachial plexus injury**. *Woods cork screw method* - This maneuver involves rotating the fetal shoulders by applying pressure to the posterior aspect of the **posterior shoulder**, which often helps to disimpact the anterior shoulder. - It is a recognized and effective technique used to resolve **shoulder dystocia**. *Supra pubic pressure* - **Suprapubic pressure** is applied externally over the maternal suprapubic bone to dislodge the anterior shoulder from behind the symphysis pubis. - This maneuver is often performed first after the initial attempts at fetal head traction and **McRoberts maneuver** to help release the impacted shoulder. *Zavanelli maneuver* - The **Zavanelli maneuver** involves pushing the fetal head back into the uterus and performing an immediate cesarean section. - It is considered a **last-resort maneuver** for severe shoulder dystocia when other techniques have failed, carrying significant risks but sometimes necessary to prevent fetal death.

Q: Best predictor of successful vaginal birth after cesarean (VBAC)?

Previous vaginal delivery. ***Previous vaginal delivery*** - A history of prior **vaginal delivery**, especially a prior successful **vaginal birth after cesarean (VBAC)**, is the strongest predictor of successful VBAC. - This indicates a proven capacity for the **pelvis** and **uterus** to accommodate a vaginal birth. *BMI <30* - While a **lower BMI** is associated with higher VBAC success rates, it is not the strongest predictor compared to obstetrical history. - **Maternal obesity** (BMI $\ge$ 30) is considered a risk factor for VBAC failure, but a BMI below 30 alone does not guarantee success. *Spontaneous labor* - The onset of **spontaneous labor** increases the likelihood of a successful VBAC compared to induced labor, but prior vaginal delivery carries greater predictive weight. - Absence of spontaneous labor does not contraindicate VBAC, as **induction** can still be successful in many cases. *Inter-pregnancy interval >24 months* - An **inter-pregnancy interval** of greater than 18-24 months is associated with a lower risk of **uterine rupture** and slightly improved VBAC success rates. - However, it is a less significant predictor of overall success than a history of prior vaginal delivery.

Q: Best marker for diagnosis of premature rupture of membranes (PROM)?

Placental alpha microglobulin-1. ***Placental alpha microglobulin-1*** - **Placental alpha microglobulin-1 (PAMG-1)** is a protein found in high concentrations in **amniotic fluid** but not in cervicovaginal secretions, making it a highly specific and sensitive marker for **PROM**. - Its detection via a **rapid immunoassay (AmniSure)** provides a reliable and fast diagnosis of ruptured membranes, especially in equivocal cases. *Insulin-like growth factor binding protein-1* - **Insulin-like growth factor binding protein-1 (IGFBP-1)** is also present in amniotic fluid and used in some tests (e.g., **Actim PROM**), but PAMG-1 generally has slightly superior diagnostic accuracy. - While useful, its specificity can be affected by blood or other vaginal contaminants. *Fern test* - The **fern test** involves examining dried vaginal fluid under a microscope for a characteristic **ferning pattern** that indicates the presence of amniotic fluid. - This test has lower sensitivity and specificity compared to biochemical markers and can be influenced by cervical mucus, semen, or urine. *Vaginal pH >6.5* - Amniotic fluid is typically **alkaline (pH 7.0-7.5)**, so a vaginal pH greater than 6.5 suggests the presence of amniotic fluid. - However, vaginal pH can also be elevated by conditions like **bacterial vaginosis**, **semen**, or **blood**, leading to false positives.

Q: Which method is most appropriate for cervical ripening in a term pregnancy with oligohydramnios and reactive NST?

Foley catheter. **Foley catheter** - **Mechanical methods** like the Foley catheter are preferred for cervical ripening in the presence of **oligohydramnios** because they do not carry the risk of inducing uterine hyperstimulation, which can further compromise fetal well-being. - The reactive non-stress test (NST) indicates the fetus is currently healthy, but oligohydramnios suggests a need to minimize any potential stress, making mechanical ripening a safer choice. *Dinoprostone gel 0.5mg* - **Prostaglandins** like dinoprostone can increase the risk of **uterine hyperstimulation**, which could be particularly dangerous for a fetus with oligohydramnios as it restricts blood flow and oxygen. - While effective for ripening, the risk profile is higher compared to mechanical methods when fetal compromise (like oligohydramnios) is present. *Misoprostol 25mcg vaginal* - **Misoprostol** is a potent prostaglandin analog that carries a significant risk of **uterine tachysystole** and hyperstimulation. - In cases with **oligohydramnios**, any drug-induced increase in uterine activity could further strain fetal oxygenation and well-being. *Oxytocin infusion* - **Oxytocin** is primarily used for **induction of labor** (to stimulate contractions) and not for cervical ripening directly. - Initiating oxytocin without a ripened cervix is less effective and carries a higher risk of failed induction and potentially C-section, and it does not address the need for cervical changes first.

Q: True about uterine rupture during labor:

Occurs more with previous cesarean. ***Occurs more with previous cesarean*** - A prior **cesarean section** poses a significant risk factor for uterine rupture during subsequent labors due to the presence of a uterine scar that can dehisce. - The risk of uterine rupture increases with the number of previous C-sections, especially in cases of short inter-pregnancy intervals or specific types of uterine incisions. *Not associated with fetal distress* - **Fetal distress** is a very common and critical sign of uterine rupture, often manifesting as sudden **severe bradycardia** or **late decelerations** due to placental compromise or direct fetal injury. - The disruption of the uterine wall can lead to **hypoxia, acidosis, and fetal demise** if not urgently addressed. *Best treated conservatively* - **Uterine rupture is a medical emergency** requiring **immediate surgical intervention**, typically a **laparotomy** for repair of the uterus and delivery of the fetus. - Conservative management is generally inappropriate and can lead to **severe maternal hemorrhage, fetal anoxia, and death** due to rapid blood loss and lack of oxygen to the fetus. *Always causes pain* - While often accompanied by **sudden, severe abdominal pain**, uterine rupture can sometimes present with less obvious symptoms, particularly if it's a **dehiscence of an old scar** without complete rupture. - In some cases, the primary sign might be **fetal distress** or **vaginal bleeding** with minimal maternal pain, especially if the mother has an **epidural analgesia** in place masking pain.

Q: A 29-year-old woman at 39 weeks of gestation presents with spontaneous rupture of membranes and meconium-stained amniotic fluid. What is the most appropriate initial step in management?

Fetal heart rate monitoring. ***Fetal heart rate monitoring*** - The presence of **meconium-stained amniotic fluid** necessitates immediate assessment of **fetal well-being** to rule out **fetal distress**. - **Continuous fetal heart rate monitoring** helps identify potential complications like **cord compression** or **fetal hypoxemia**, guiding subsequent management. *Immediate induction of labor* - While delivery will be planned, **immediate induction** is not the *first* step; initial assessment of fetal status is more critical. - Induction might be considered after fetal assessment, but only if the cervix is favorable and there are no signs of severe distress. *Expectant management* - **Expectant management** is inappropriate with **meconium-stained amniotic fluid** due to the increased risk of **meconium aspiration syndrome** and fetal distress. - Close monitoring and prompt intervention are essential to ensure fetal and neonatal safety. *Cesarean section* - A **Cesarean section** might be indicated if severe **fetal distress** is identified, but it is not the *initial* step without prior fetal assessment. - Many cases of meconium-stained fluid can still result in a vaginal delivery with appropriate monitoring and supportive care.

Q: A primigravida at 39 weeks presents in active labor with cervical dilation of 6 cm, regular contractions every 3-4 minutes, and no progress in cervical dilation after 4 hours. What is the most appropriate management?

Oxytocin augmentation. ***Oxytocin augmentation*** - This patient is experiencing **active phase arrest**, defined as cervical dilation of 6 cm or more with ruptured membranes and no cervical change for **4 hours with adequate contractions**, or **6 hours with inadequate contractions**. - The contractions occurring every 3-4 minutes suggest **suboptimal uterine activity** for active labor progression (optimal is every 2-3 minutes). - **Oxytocin augmentation** is the appropriate first-line management to improve contraction frequency and intensity, promoting cervical dilation. - Before proceeding to cesarean section, augmentation should be attempted unless there are contraindications. *Amniotomy* - **Amniotomy** can augment labor if membranes are intact, but it is **less effective than oxytocin** for managing active phase arrest. - If membranes are already ruptured, amniotomy is not an option. - Oxytocin provides more controlled and predictable augmentation of labor. *Emergency cesarean section* - Cesarean section is indicated when **oxytocin augmentation fails** after adequate trial, or when there are maternal/fetal compromise or suspected cephalopelvic disproportion. - Since augmentation has not been attempted, proceeding directly to cesarean section would be premature. - Current guidelines recommend attempting augmentation before surgical intervention in the absence of urgent indications. *Expectant management* - **Expectant management** is inappropriate as the patient has met criteria for active phase arrest requiring intervention. - Prolonged labor without intervention increases risks of **maternal exhaustion, chorioamnionitis, and fetal compromise**. - Active intervention is necessary to promote safe labor progression.

Question 1

Maternal supine hypotension syndrome can be minimized by

Accepted Answer

Left-Hip elevation

Answer

General anaesthesia

Answer

Regional anaesthesia

Answer

Left-Uterine displacement

Question 2

Incomplete uterine rupture is defined as?

Accepted Answer

Disruption of scar with peritoneum intact

Answer

Disruption of entire length of scar

Answer

Disruption of scar including peritoneum

Answer

Disruption of part of scar

Question 3

Which of the following statements is TRUE regarding obstetric inversion?

Accepted Answer

It is usually acute

Answer

In majority, it is spontaneous in nature

Answer

It is usually insidious in onset

Answer

It is usually incomplete

Question 4

Shoulder dystocia is managed by all of the following except:-

Accepted Answer

Fundal pressure by an able nurse

Answer

Woods cork screw method

Answer

Supra pubic pressure

Answer

Zavanelli maneuver

Question 5

Best predictor of successful vaginal birth after cesarean (VBAC)?

Accepted Answer

Previous vaginal delivery

Answer

BMI <30

Answer

Spontaneous labor

Answer

Inter-pregnancy interval >24 months

Question 6

Best marker for diagnosis of premature rupture of membranes (PROM)?

Accepted Answer

Placental alpha microglobulin-1

Answer

Insulin-like growth factor binding protein-1

Answer

Fern test

Answer

Vaginal pH >6.5

Question 7

Which method is most appropriate for cervical ripening in a term pregnancy with oligohydramnios and reactive NST?

Accepted Answer

Foley catheter

Answer

Dinoprostone gel 0.5mg

Answer

Misoprostol 25mcg vaginal

Answer

Oxytocin infusion

Question 8

True about uterine rupture during labor:

Accepted Answer

Occurs more with previous cesarean

Answer

Not associated with fetal distress

Answer

Best treated conservatively

Answer

Always causes pain

Question 9

A 29-year-old woman at 39 weeks of gestation presents with spontaneous rupture of membranes and meconium-stained amniotic fluid. What is the most appropriate initial step in management?

Accepted Answer

Fetal heart rate monitoring

Answer

Immediate induction of labor

Answer

Expectant management

Answer

Cesarean section

Question 10

A primigravida at 39 weeks presents in active labor with cervical dilation of 6 cm, regular contractions every 3-4 minutes, and no progress in cervical dilation after 4 hours. What is the most appropriate management?

Accepted Answer

Oxytocin augmentation

Answer

Amniotomy

Answer

Emergency cesarean section

Answer

Expectant management

Labor and Delivery — MCQs

Labor and Delivery — MCQs

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