Labor and Delivery Practice Questions

Q: Transverse lie is caused by all except which of the following?

Maternal diabetes. ***Maternal diabetes*** - **Maternal diabetes** is primarily associated with **macrosomia** (larger-than-average fetus) and increased risk of shoulder dystocia, not typically transverse lie. - While it can complicate labor, it does not directly predispose to the fetus lying sideways in the uterus. *Multiparity* - **Multiparity** (multiple prior pregnancies) can lead to **lax abdominal and uterine musculature**, which reduces the integrity of the uterus to maintain fetal orientation. - This laxity allows the fetus more room to move and settle into an abnormal lie, including transverse. *Prematurity* - In **premature deliveries**, the fetus is often smaller and has more space to move within the uterus, increasing the likelihood of an **unstable lie**. - The relative proportions of fetal size to uterine cavity are less constrained in premature infants, facilitating non-longitudinal positions. *Placenta previa* - **Placenta previa** (placenta covering or near the cervix) can physically obstruct the descent of the fetal head into the pelvis, preventing it from engaging in a longitudinal lie. - The placenta's position forces the fetus to lie in a **transverse or oblique orientation** because the lower uterine segment is occupied, preventing proper fetal alignment.

Q: Most common breech presentation in primigravida is?

Frank breech presentation. ***Frank breech presentation*** - This is the most common type of breech presentation, accounting for **65-70% of all breech presentations**, especially in **primigravida**. - The baby's **hips are flexed and knees are extended**, with the feet near the head. - The extended legs splint the fetal body and contribute to a more stable position within the uterus. *Complete breech presentation* - In a **complete breech**, the baby's hips and knees are both flexed, with the buttocks presenting first and the feet near the buttocks. - Accounts for approximately **5-10% of breech presentations**. - While common, it is significantly less frequent than frank breech, particularly in primigravidas. *Footling breech presentation* - In a **footling breech**, one or both feet present first through the cervix. - Accounts for approximately **10-30% of breech presentations**. - Associated with higher risks including premature rupture of membranes, umbilical cord prolapse, and is less stable during delivery. *Incomplete breech presentation* - This is a general term that includes **footling and kneeling breech** presentations, where the presentation is neither frank nor complete. - It's an encompassing category rather than a specific single presentation type. - Less common than frank breech as the most frequent single type in primigravidas.

Q: Persistent OP position is most common in which pelvis?

Anthropoid pelvis. ***Anthropoid pelvis*** - The **anthropoid pelvis** has an **oval-shaped inlet** with a **long anteroposterior diameter** and **narrow transverse diameter**. - This pelvic configuration is most commonly associated with **persistent occiput posterior (OP) position** because the narrow transverse diameter limits rotation, while the long AP diameter accommodates the fetal head in the OP or direct OA position. - The fetal head tends to engage and remain in the **direct OP or direct OA position** rather than rotating to the transverse position. - This is the **classic pelvic type associated with persistent OP delivery**. *Android pelvis* - The **android pelvis** has a heart-shaped or triangular inlet, narrow subpubic arch, and prominent ischial spines. - This pelvic type is associated with **difficult labor**, **transverse arrest**, and **deep transverse arrest** of the fetal head. - While it can cause malposition, it is more characteristically associated with **arrest disorders** rather than persistent OP position. *Gynaecoid pelvis* - The **gynaecoid pelvis** is the ideal and most common female pelvic type, with a rounded inlet, wide subpubic arch, and adequate dimensions. - This pelvic shape allows for **optimal fetal head rotation** from OP to OA position during labor. - Persistent OP position is **uncommon** with this pelvic type. *Mixed pelvis* - A **mixed pelvis** exhibits characteristics of more than one fundamental pelvic type. - The likelihood of persistent OP depends on which features predominate, but it is not a specific classic association.

Q: Which is the engaging diameter in occipitoposterior presentation?

Suboccipitofrontal. ***Suboccipitofrontal*** - In an occipitoposterior presentation, the fetal head is usually deflexed, causing the **suboccipitofrontal diameter** (approximately 10 cm) to be the engaging diameter. - This diameter extends from the junction of the occiput and the neck to the anterior part of the forehead (glabella). *Mentovertical* - The **mentovertical diameter** is the engaging diameter in a brow presentation, which is typically around 13.5 cm and usually makes vaginal birth impossible. - This diameter extends from the chin to the very top of the head (vertex). *Submentovertical* - The **submentovertical diameter** is the engaging diameter in a face presentation, measuring about 11.5 cm. - This diameter extends from below the chin to the vertex of the head. *Bitrochanteric* - The **bitrochanteric diameter** refers to the width between the fetal **trochanters** (hips) and is relevant for breech presentations, but not for cephalic presentations. - It is typically around 10 cm and is not involved in head engagement.

Q: What is the most common position of engagement in vertex presentation?

Left Occiput Anterior (LOA). ***Left Occiput Anterior (LOA)*** - This is the **most common** fetal position for engagement, as the fetal head's **occiput** aligns with the maternal pelvis's **left anterior quadrant**. - The **long axis** of the fetal head is generally aligned with the **oblique diameter** of the maternal pelvis, facilitating descent. *Right Occiput Anterior (ROA)* - While an anterior position, **LOA** is more common due to the typical orientation of the **uterus and fetal spine**. - The fetal occiput is in the **right anterior quadrant** of the maternal pelvis. *Right Occiput Posterior (ROP)* - This is a **malposition** that can lead to **prolonged labor** and increased pain due to direct pressure on the sacrum. - The fetal occiput is in the **right posterior quadrant** of the maternal pelvis. *Left Occiput Posterior (LOP)* - Similar to ROP, this is also a **malposition** that may require significant **rotation** for successful vaginal delivery. - The fetal occiput is in the **left posterior quadrant** of the maternal pelvis.

Q: Which type of pelvis is most accommodating for the occipitoposterior position during labor?

Anthropoid. ***Anthropoid*** - The **anthropoid pelvis** is characterized by a long anteroposterior diameter and a narrow transverse diameter, which allows the fetal head in an **occipitoposterior (OP) position** to accommodate more easily. - Its oval shape facilitates a direct anterior-posterior delivery, reducing the need for extensive rotation when the occiput is posterior. *Android pelvis* - The **android pelvis** is heart-shaped with a narrow pubic arch and reduced diameters, making it unfavorable for *any* fetal presentation, especially OP. - This pelvic type is associated with a higher incidence of **arrest of labor** and requires more interventions during delivery. *Gynaecoid* - The **gynaecoid pelvis** is considered the classic female pelvis, with a rounded inlet and good proportions for vaginal delivery in an **occipitoanterior (OA) position**. - While generally favorable, its broader transverse diameter makes accommodation of an OP position less optimal compared to the anthropoid pelvis. *Platypelloid* - The **platypelloid pelvis** has a flattened shape with a short anteroposterior diameter and a wide transverse diameter. - This shape is highly unfavorable for vaginal delivery, as it obstructs engagement and descent of the fetal head in both OA and OP positions, leading to complications.

Q: Which of the following is not typically given to a patient with preterm labor?

Beta blocker. ***Beta blocker*** - **Beta blockers** are generally avoided in preterm labor because they can worsen **fetal bradycardia** and **neonatal hypoglycemia**. - They are not used to manage uterine contractions or promote fetal lung maturity. *Glucocorticoids* - **Glucocorticoids** (e.g., **betamethasone**) are administered to promote **fetal lung maturity** and reduce the risk of **respiratory distress syndrome** in preterm infants. - They are a crucial intervention in managing preterm labor. *Tocolytic drugs* - **Tocolytic drugs** (e.g., **nifedipine**, **terbutaline**) are used to **suppress uterine contractions** and delay delivery in preterm labor. - This allows time for glucocorticoids to take effect and for transfer to a facility with neonatal intensive care. *Antibiotics* - Although not routinely given to all patients with preterm labor, **antibiotics** are prescribed if there is evidence of an **intrauterine infection** or if the patient is positive for **Group B Streptococcus (GBS)**. - Infection can be a trigger for preterm labor, and treating it can help prolong pregnancy or prevent neonatal sepsis.

Q: Given the following partogram data, identify the most likely diagnosis: Cervical dilation curve shows a prolonged labor with the cervical dilation falling to the right of the alert line.

Cephalopelvic Disproportion (CPD). ***Cephalopelvic Disproportion (CPD)*** - A cervical dilation curve that crosses the **alert line** and approaches or crosses the **action line** on a partogram indicates **prolonged labor** or **arrest of labor**. This pattern is highly suggestive of CPD, where the fetal head is too large to pass through the maternal pelvis. - While other factors can cause prolonged labor, CPD is a common cause of **protracted active phase disorders** and **labor arrest**, characterized by a cervix that fails to dilate adequately despite sufficient contractions. *Inadequate uterine contractions* - While inadequate uterine contractions (hypotonic contractions) can lead to **prolonged labor**, the partogram does not provide direct information about the frequency or intensity of contractions to conclusively make this diagnosis. - If contractions were primarily the issue, augmenting labor with oxytocin would be expected to improve the dilation curve, which is not indicated as the primary problem here. *Rupture of the uterus during labor* - Uterine rupture is a catastrophic event typically presenting with sudden **severe pain**, **vaginal bleeding**, **fetal heart rate abnormalities**, and potentially **maternal shock**. - While it can lead to cessation of labor progress, the partogram pattern of a slowly deviating dilation curve over time is not characteristic of an acute uterine rupture. *Maternal exhaustion* - Maternal exhaustion is a common consequence of **prolonged labor** but is not a primary cause of labor arrest or a specific diagnosis reflected by the cervical dilation curve alone. - It often accompanies other underlying issues like CPD or inefficient uterine contractions, rather than being the sole etiology for the observed partogram.

Question 1

Transverse lie is caused by all except which of the following?

Accepted Answer

Maternal diabetes

Answer

Prematurity

Answer

Placenta previa

Answer

Multiparity

Question 2

Most common breech presentation in primigravida is?

Accepted Answer

Frank breech presentation

Answer

Footling breech presentation

Answer

Incomplete breech presentation

Answer

Complete breech presentation

Question 3

Persistent OP position is most common in which pelvis?

Accepted Answer

Anthropoid pelvis

Answer

Android pelvis

Answer

Gynaecoid pelvis

Answer

Mixed pelvis

Question 4

Which of the following is NOT a contraindication for induction of labour?

Accepted Answer

Hypertensive disease of pregnancy

Answer

Heart disease of pregnancy

Answer

Pelvic tumor

Answer

Vasa previa

Question 5

Which is the engaging diameter in occipitoposterior presentation?

Accepted Answer

Suboccipitofrontal

Answer

Mento vertical

Answer

Submentovertical

Answer

Bitrochanteric

Question 6

A multigravida patient with a 4 kg fetus has been in labor for 15 hours, with cervical dilation at 5 cm for the last 8 hours. What is the most appropriate management for this patient?

Accepted Answer

Cesarean section

Answer

Observe and monitor the patient

Answer

Perform amniotomy if indicated

Answer

Administer oxytocin for augmentation of labor

Question 7

What is the most common position of engagement in vertex presentation?

Accepted Answer

Left Occiput Anterior (LOA)

Answer

Right Occiput Anterior (ROA)

Answer

Right Occiput Posterior (ROP)

Answer

Left Occiput Posterior (LOP)

Question 8

Which type of pelvis is most accommodating for the occipitoposterior position during labor?

Accepted Answer

Anthropoid

Answer

Android

Answer

Gynaecoid

Answer

Platypelloid

Question 9

Which of the following is not typically given to a patient with preterm labor?

Accepted Answer

Beta blocker

Answer

Tocolytic drugs

Answer

Antibiotics

Answer

Glucocorticoids

Question 10

Given the following partogram data, identify the most likely diagnosis: Cervical dilation curve shows a prolonged labor with the cervical dilation falling to the right of the alert line.

Accepted Answer

Cephalopelvic Disproportion (CPD)

Answer

Rupture of the uterus during labor

Answer

Inadequate uterine contractions

Answer

Maternal exhaustion

Labor and Delivery — MCQs

Labor and Delivery — MCQs

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