Labor and Delivery Practice Questions

Q: What do variable decelerations in fetal heart rate indicate?

Umbilical cord compression. ***Umbilical cord compression*** - Variable decelerations are characterized by their **abrupt onset** and **variable shape**, often resembling a 'V' or 'W', quickly dipping and returning to baseline. - This pattern is highly indicative of **umbilical cord compression**, which temporarily reduces blood flow to the fetus, causing a vagal response. *Head compression during labor* - **Early decelerations**, which are gradual and mirror the contraction, are typically associated with **head compression** during labor. - These are generally considered benign and do not signify fetal distress. *Insufficient blood flow to the fetus* - **Late decelerations**, characterized by a gradual decrease in FHR that starts after the peak of the contraction and returns to baseline only after the contraction has ended, indicate **uteroplacental insufficiency** (insufficient blood flow). - This is a more concerning sign, suggesting fetal hypoxia. *Effects of maternal medication* - While maternal medications (e.g., narcotics, magnesium sulfate) can affect fetal heart rate, they typically cause a **decrease in baseline variability** or a **sustained decrease in baseline rate**, not variable decelerations. - Variable decelerations are more directly linked to acute, mechanical stress on the umbilical cord.

Q: Which of the following is a definitive indicator of true labor pain?

Progressive effacement and dilation of cervix. ***Progressive effacement and dilation of cervix*** - **Progressive cervical change** (effacement and dilation) is the universally accepted definitive sign of **true labor**. - This indicates that the **uterine contractions** are effective in preparing the cervix for birth. *Uterine contractions at regular intervals* - While regular contractions are a characteristic of early labor, they can also occur with **Braxton Hicks contractions** (false labor) which do not lead to cervical change. - The **regularity** alone does not confirm that labor is true or progressive. *Rupture of membranes (water breaking)* - **Rupture of membranes** can occur before labor begins, during labor, or not at all (if artificially ruptured). - It is not a definitive sign of established **true labor**, as contractions and cervical changes are still needed for progression. *None of the options* - This option is incorrect because progressive effacement and dilation of the cervix is a **definitive indicator** of true labor. - The other options singly are not definitive, but **cervical change** is.

Q: Variable decelerations are associated with which of the following?

Cord compression. ***Cord compression*** - **Variable decelerations** are characterized by an abrupt decrease in fetal heart rate, varying in timing and amplitude relative to uterine contractions. This pattern is classically associated with **umbilical cord compression**. - When the umbilical cord is compressed, blood flow (and thus oxygen delivery) to the fetus is transiently reduced, causing a **baroreflex-mediated vagal response** that slows the heart rate. *Head compression* - **Head compression** typically causes **early decelerations**, which are gradual, symmetrical drops in fetal heart rate that mirror the uterine contraction. - This is due to an increase in **intracranial pressure** leading to a vagal response. *Uteroplacental insufficiency* - **Uteroplacental insufficiency** (e.g., placental abruption, preeclampsia) is associated with **late decelerations**, which are gradual, symmetrical decreases in fetal heart rate that begin after the peak of the contraction and return to baseline after the contraction ends. - This reflects **fetal hypoxemia** due to insufficient oxygen exchange at the placenta. *None of the options* - This option is incorrect because **variable decelerations** specifically indicate **cord compression**, a well-established association in fetal monitoring.

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: 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: 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: 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: Ventouse in 2nd stage of labour is contraindicated in:

Preterm labour. ***Preterm labour*** - **Ventouse delivery** is contraindicated in **preterm labour** due to the increased risk of **cephalohaematoma**, **intracranial haemorrhage**, and **neonatal jaundice** in pre-term infants whose skulls are more fragile. - The use of traction on a premature skull can easily cause trauma, making premature birth a major contraindication for vacuum extraction. *Persistent occipito-posterior position* - This is an indication for instrumental delivery, including **ventouse**, when rotation assistance is needed or delivery is complicated. - **Ventouse** can be used to achieve rotation and descent in this position, making it a viable option rather than a contraindication. *Heart disease* - **Ventouse delivery** can be indicated in women with **cardiac conditions** to shorten the second stage of labour, thereby reducing maternal exertion and cardiovascular strain. - It is used to prevent the physiological stress of prolonged pushing, which can exacerbate underlying heart disease. *Uterine inertia* - **Ventouse delivery** can be used to expedite delivery when there is inadequate uterine contraction leading to **uterine inertia**, and the cervix is fully dilated. - This condition prolongs labour, and instrumental delivery can help achieve birth without resorting to a C-section in some cases.

Question 1

What do variable decelerations in fetal heart rate indicate?

Accepted Answer

Umbilical cord compression

Answer

Head compression during labor

Answer

Insufficient blood flow to the fetus

Answer

Effects of maternal medication

Question 2

Among the following malpresentations, which is most favorable for vaginal delivery?

Accepted Answer

Face presentation with mentum anterior (chin toward symphysis pubis)

Answer

Face presentation when the chin lies direct to the sacrum

Answer

Brow presentation

Answer

Shoulder presentation

Question 3

Which of the following is a definitive indicator of true labor pain?

Accepted Answer

Progressive effacement and dilation of cervix

Answer

None of the options

Answer

Rupture of membranes (water breaking)

Answer

Uterine contractions at regular intervals

Question 4

Variable decelerations are associated with which of the following?

Accepted Answer

Cord compression

Answer

Head compression

Answer

Uteroplacental insufficiency

Answer

None of the options

Question 5

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 6

Macerated foetus is indicative of:

Accepted Answer

Stillborn

Answer

Live born

Answer

Deadborn

Answer

IUGR

Question 7

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 8

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 9

Ventouse in 2nd stage of labour is contraindicated in:

Accepted Answer

Preterm labour

Answer

Uterine inertia

Answer

Persistent occipito-posterior position

Answer

Heart disease

Question 10

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.

Labor and Delivery — MCQs

Labor and Delivery — MCQs

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