Labor and Delivery Practice Questions

Q: Which of the following is a known cause of breech presentation?

Hydramnios. ***Hydramnios*** - **Excessive amniotic fluid** (polyhydramnios) increases the space available for fetal movement, preventing the fetus from settling into a stable cephalic position - This allows **increased fetal mobility** and is a well-recognized cause of **malpresentation including breech presentation** - The lack of normal space constraints means the fetus can freely move and fail to engage in vertex position *Septate uterus* - **Uterine anomalies** including septate uterus can restrict the intrauterine space and are recognized causes of breech presentation - However, they are **less common** than other causes and may also lead to recurrent pregnancy loss or preterm delivery - While a valid cause, it's not as frequently encountered as polyhydramnios in clinical practice *Hydrocephalus* - **Fetal hydrocephalus** with enlarged head can prevent normal engagement of the fetal head in the maternal pelvis - This can lead to malpresentation, though the mechanism is more about **disproportion** preventing cephalic engagement rather than causing breech directly - It's a recognized but less common fetal factor compared to other causes *Uterine fibroids* - **Large uterine fibroids**, particularly those in the lower uterine segment, can obstruct fetal descent and cause malpresentation - They alter uterine cavity shape and can prevent normal version to cephalic presentation - However, they are a **less frequent** direct cause compared to conditions like polyhydramnios or oligohydramnios

Q: Which of the following is NOT an indicator of impending uterine rupture during labor?

Passage of meconium. ***Passage of meconium*** - While **meconium passage** in labor is a sign of **fetal stress** or hypoxia, it is not a direct indicator of impending uterine rupture. - It results from increased vagal tone and relaxation of the anal sphincter, often in response to **fetal compromise**, but doesn't specifically point to uterine integrity. *Fetal distress* - **Fetal distress**, as indicated by persistent **fetal heart rate abnormalities** (e.g., late decelerations, prolonged bradycardia), can be a critical sign of impending uterine rupture due to disrupted placental blood flow. - The sudden onset of these changes, especially after a period of normal tracing, should raise high suspicion. *Hematuria* - **Hematuria** (blood in the urine) during labor can result from trauma to the **bladder** caused by the stretching or tearing of the lower uterine segment, which often precedes rupture. - It signifies that the bladder is being compromised or directly damaged, indicating severe pressure or injury alongside uterine compromise. *Fresh bleeding per vaginum* - **Fresh, bright red vaginal bleeding** in labor, especially if sudden and not associated with cervical changes, is a significant sign of impending or actual **uterine rupture**. - This blood often originates from the disrupted uterine vessels and indicates a loss of uterine integrity.

Q: Diagonal conjugate is defined as the distance between

Lower border of symphysis pubis and the sacral promontory. ***Lower border of symphysis pubis and the sacral promontory*** - The **diagonal conjugate** is a clinically measurable diameter that extends from the **inferior border of the symphysis pubis** to the **sacral promontory**. - This measurement helps to estimate the **obstetrical conjugate**, which is the true anteroposterior diameter of the pelvic inlet. *Upper border of symphysis pubis and the sacral promontory* - This description corresponds to neither a clinically measurable nor an anatomically significant pelvic diameter. - The **anatomical conjugate** extends from the **upper border of the symphysis pubis** to the sacral promontory, but this is not the diagonal conjugate. *Lower border of symphysis pubis and the third piece of sacrum* - Measuring to the **third piece of the sacrum** is not a standard anatomical landmark for pelvic measurements used in obstetrics. - The important landmark for pelvic inlet dimensions is the **sacral promontory**. *Lower border of symphysis pubis and tip of sacrum* - The **tip of the sacrum** is too inferior and posterior to be relevant for measuring the diagonal conjugate and estimating the pelvic inlet. - The **sacral promontory** is the key superior point on the sacrum for this measurement.

Q: Macerated foetus is indicative of:

Stillborn. ***Still born*** - A **macerated fetus** is characterized by the breakdown of fetal tissues due to **autolysis** in utero, which occurs when the fetus has died and remained in the womb for an extended period (usually >12-24 hours). - This condition is the hallmark of an **intrauterine fetal death** before delivery, defining it as a **stillbirth**. *Dead born* - While a **stillborn** fetus is technically "dead born," the term "dead born" is less precise and does not specifically imply the tissue changes (maceration) that occur with prolonged retention in utero. - The term **dead born** can encompass fetuses delivered immediately after death without significant tissue autolysis. *Live born* - A **liveborn** infant shows signs of life at birth, such as breathing, heart beat, umbilical cord pulsation, or definite voluntary muscle movement, none of which would be present in a macerated fetus. - **Maceration** is a post-mortem finding, directly indicating the fetus was not alive at birth. *IUGR* - **Intrauterine growth restriction (IUGR)** refers to a fetus that has not reached its genetically determined growth potential, resulting in an estimated fetal weight below the 10th percentile for gestational age. - While IUGR can be a risk factor for stillbirth, it is a **growth abnormality**, not a direct indicator or consequence of fetal death or maceration itself.

Q: Which is the most common complication during vaginal delivery in a diabetic woman?

Shoulder dystocia. ***Shoulder dystocia*** - **Fetal macrosomia**, common in diabetic pregnancies, leads to disproportionate shoulder circumference relative to the head, increasing the risk of **shoulder dystocia**. - This complication occurs when the fetal shoulders get stuck behind the maternal pubic bone after the head has been delivered, requiring specific maneuvers for resolution. *Uterine inertia* - While possible, **uterine inertia** is not the most common complication specifically associated with vaginal delivery in diabetic women. - It involves inefficient uterine contractions and may lead to prolonged labor, but **fetal macrosomia** presents a more direct and frequent mechanical obstruction. *Postpartum hemorrhage* - **Postpartum hemorrhage** (PPH) is a significant complication in diabetic women, often due to **uterine atony** (a floppy uterus that doesn't contract well) resulting from overdistension by a macrosomic infant. - However, **shoulder dystocia** is a more direct and immediate mechanical complication related to fetal size during the pushing phase and is statistically more frequent during the actual delivery in these cases. *Excessive moulding of head* - **Excessive moulding** of the fetal head is more commonly associated with cephalopelvic disproportion where the fetal head is too large for the maternal pelvis, irrespective of diabetes. - In diabetic pregnancies, the primary issue is typically the disproportionate size of the fetal shoulders and trunk (macrosomia), rather than the head's ability to mold through the birth canal.

Q: Which is the most common position in breech presentation?

Left sacroanterior. ***Left sacroanterior*** - This is the **most common position** for a fetus in a **breech presentation**. - The fetal **sacrum (S)** is pointing towards the mother's **left (L)** and **anterior (A)** pelvis. *Right sacroanterior* - In this position, the fetal sacrum is pointing towards the mother's **right (R)** and **anterior (A)** pelvis. - While possible, it is **less common** than the left sacroanterior position. *Right sacroposterior* - Here, the fetal sacrum is pointing towards the mother's **right (R)** and **posterior (P)** pelvis. - **Sacroposterior positions** often lead to more difficult deliveries and are less common. *Left sacroposterior* - In this position, the fetal sacrum is pointing towards the mother's **left (L)** and **posterior (P)** pelvis. - Like right sacroposterior, it is **less frequent** than anterior presentations and can pose delivery challenges.

Q: A 35-year-old pregnant female at 40 weeks' gestational age presents with pain and regular uterine contractions every 4-5 minutes. On arrival, the patient is in a lot of pain and requesting relief immediately. Her cervix is 5 cm dilated. What is the most appropriate method of pain control for this patient?

Epidural block. ***Epidural block*** - An **epidural block** provides the most effective and comprehensive pain relief during active labor, especially with a cervical dilation of 5 cm and strong contractions. - It allows the mother to be awake and cooperative while virtually eliminating labor pain, which is crucial for a patient "in a lot of pain and requesting relief immediately." *Intramuscular morphine* - **Intramuscular morphine** offers systemic pain relief but crosses the placenta and can cause fetal central nervous system depression, potentially leading to neonatal respiratory depression. - Its onset of action is slower, and the pain relief is generally less complete than an epidural block, making it less suitable for immediate and comprehensive relief in active labor. *Pudendal block* - A **pudendal block** provides pain relief to the perineum, vulva, and vagina, which is effective for the second stage of labor and delivery but offers minimal relief for uterine contraction pain in the first stage. - It is inadequate for comprehensive pain control during regular, strong uterine contractions at 5 cm cervical dilation. *Local block* - **Local blocks** (e.g., paracervical block) primarily relieve pain from the cervix and upper vagina but can have a short duration of action and a risk of fetal bradycardia. - A local block would not provide the widespread and sustained pain relief needed for ongoing labor contractions and is not the most appropriate choice for immediate, effective pain control in this scenario.

Q: What is the maneuver performed by the obstetrician to sharply flex the legs towards the abdomen when suspecting shoulder dystocia after the delivery of the head during a delivery?

McRoberts maneuver. ***McRoberts maneuver*** - This maneuver involves sharply flexing the maternal thighs against the abdomen, which **flattens the sacrum** and rotates the symphysis pubis anteriorly. - This **increases the functional diameter** of the pelvic outlet and often helps dislodge the anterior shoulder in cases of shoulder dystocia. *Rubin's maneuver* - This maneuver involves reaching into the vagina and **rotating the anterior shoulder** to an oblique position or pushing the posterior shoulder anteriorly. - It is used when the McRoberts maneuver fails and aims to **reduce the bisacromial diameter**. *Wood Corkscrew maneuver* - This maneuver involves reaching into the vagina and **rotating the posterior shoulder** 180 degrees in a corkscrew fashion. - It works by sequentially engaging and disengaging shoulders, effectively **"walking" the baby out**. *Zavanelli's maneuver* - This is a **last-resort maneuver** used when other attempts to resolve shoulder dystocia have failed and involves replacing the fetal head back into the birth canal. - It is performed to then proceed with an **emergency cesarean section**.

Q: Which dermatomes are involved in pain during early labor?

T10, T11, T12, L1. ***T10, T11, T12, L1*** - Pain during the **first stage of labor** primarily arises from **uterine contractions** and **cervical dilation**. - These visceral pain signals are transmitted through the **sympathetic nervous system** and enter the spinal cord at the **T10-L1 dermatome levels**. - This is the classic distribution for early labor pain, involving the lower thoracic and upper lumbar segments. *S1, S3* - The **S2-S4 dermatomes** are associated with somatic pain from the **perineum** and **vaginal distention**, which typically occurs in the **second stage of labor** as the fetal head descends. - Pain in early labor is predominantly visceral and referred to higher dermatomes. *L4, L5* - The **L4-L5 dermatomes** are generally involved in somatic pain from the **lower extremities** and may be implicated in pressure on the **sciatic nerve**, which is not the primary source of pain in early labor. - Early labor pain is centered on uterine and cervical sensation. *L2, L3* - The **L2-L3 dermatomes** are more associated with pain in the **anterior thigh** and **hip region**, often seen with **lumbar disc pathology** or **nerve compression**. - While L1 is involved in early labor, L2-L3 extend beyond the typical dermatome distribution for first stage labor pain.

Question 1

Which of the following is a known cause of breech presentation?

Accepted Answer

Hydramnios

Answer

Septate uterus

Answer

Hydrocephalus

Answer

Uterine fibroids

Question 2

Which of the following is NOT an indicator of impending uterine rupture during labor?

Accepted Answer

Passage of meconium

Answer

Hematuria

Answer

Fresh bleeding per vaginum

Answer

Fetal distress

Question 3

Diagonal conjugate is defined as the distance between

Accepted Answer

Lower border of symphysis pubis and the sacral promontory

Answer

Upper border of symphysis pubis and the sacral promontory

Answer

Lower border of symphysis pubis and the third piece of sacrum

Answer

Lower border of symphysis pubis and tip of sacrum

Question 4

Macerated foetus is indicative of:

Accepted Answer

Stillborn

Answer

Live born

Answer

Deadborn

Answer

IUGR

Question 5

Which is the most common complication during vaginal delivery in a diabetic woman?

Accepted Answer

Shoulder dystocia

Answer

Excessive moulding of head

Answer

Uterine inertia

Answer

Postpartum hemorrhage

Question 6

What is true about the partograph?

Accepted Answer

Alert and action lines are separated by a difference of 4 hours in a standard partograph.

Answer

Partograph recording should be started at a cervical dilation of 4 cm.

Answer

Each small square represents 30 minutes.

Answer

Send the patient to the first referral unit if the labor progression line crosses the action line.

Question 7

Which is the most common position in breech presentation?

Accepted Answer

Left sacroanterior

Answer

Right sacroanterior

Answer

Right sacroposterior

Answer

Left sacroposterior

Question 8

A 35-year-old pregnant female at 40 weeks' gestational age presents with pain and regular uterine contractions every 4-5 minutes. On arrival, the patient is in a lot of pain and requesting relief immediately. Her cervix is 5 cm dilated. What is the most appropriate method of pain control for this patient?

Accepted Answer

Epidural block

Answer

Intramuscular morphine

Answer

Pudendal block

Answer

Local block

Question 9

What is the maneuver performed by the obstetrician to sharply flex the legs towards the abdomen when suspecting shoulder dystocia after the delivery of the head during a delivery?

Accepted Answer

McRoberts maneuver

Answer

Rubin's maneuver

Answer

Wood Corkscrew maneuver

Answer

Zavanelli's maneuver

Question 10

Which dermatomes are involved in pain during early labor?

Accepted Answer

T10, T11, T12, L1

Answer

S1, S3

Answer

L4, L5

Answer

L2, L3

Labor and Delivery — MCQs

Labor and Delivery — MCQs

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