Labor and Delivery Practice Questions

Q: All of the following are complications of shoulder presentation except:

Shoulder dystocia. **Explanation:** The correct answer is **Shoulder Dystocia**. This is a common point of confusion in NEET-PG; however, the distinction lies in the **fetal lie**. 1. **Why Shoulder Dystocia is the correct answer:** Shoulder dystocia is a complication of a **longitudinal lie** (cephalic presentation). It occurs when the fetal head is delivered, but the anterior shoulder becomes impacted behind the maternal symphysis pubis. In contrast, a **shoulder presentation** occurs in a **transverse lie**, where the long axis of the fetus is perpendicular to the mother. Since the fetus is transverse, the head never enters the birth canal first, making "shoulder dystocia" (as defined) anatomically impossible. 2. **Why other options are incorrect:** * **Obstructed Labor:** In a transverse lie, the fetus cannot pass through the pelvic brim. If left uncorrected, the shoulder is wedged into the pelvis, leading to "neglected shoulder presentation" and total obstruction. * **Uterine Rupture:** Persistent obstructed labor from a transverse lie leads to the formation of a pathological retraction ring (Bandl’s ring). The lower uterine segment becomes dangerously thin and eventually ruptures. * **Fetal Death:** This is a frequent outcome of neglected shoulder presentation due to cord prolapse (common in transverse lie), placental abruption, or prolonged labor leading to asphyxia. **Clinical Pearls for NEET-PG:** * **Management:** The treatment of choice for a transverse lie in labor at term is **Cesarean Section**. * **Hand Prolapse:** If a hand prolapses in shoulder presentation, determine the "handshake" to identify fetal position (Right hand = Right Acromio-Dorso-Posterior/Anterior). * **Key Risk:** Cord prolapse occurs in nearly 10-15% of transverse lies because the presenting part does not effectively fill the lower uterine segment.

Q: Vaginal delivery is contraindicated in:

Central placenta previa. **Explanation:** **Central Placenta Previa (Type IV)** is an absolute contraindication to vaginal delivery. In this condition, the placenta completely covers the internal os of the cervix. As the cervix dilates during labor, the placental attachments are inevitably torn, leading to sudden, massive, and life-threatening maternal hemorrhage and fetal distress. Therefore, an elective Cesarean Section is mandatory. **Analysis of Incorrect Options:** * **Previous Lower Segment Caesarean Section (LSCS):** This is not an absolute contraindication. Many women are candidates for **VBAC** (Vaginal Birth After Cesarean) or **TOLAC** (Trial of Labor After Cesarean), provided the previous incision was lower transverse and there are no recurring indications for surgery. * **Eclampsia:** The definitive treatment is delivery, but the mode depends on the obstetric status. If the cervix is favorable and labor is progressing, vaginal delivery is often preferred over surgery to avoid the hemodynamic stress of anesthesia and surgery, provided the seizures are controlled with Magnesium Sulfate. * **Antepartum Hemorrhage (APH):** APH is a broad term including Placenta Previa and Abruptio Placentae. While some types require CS, others (like mild Abruptio or Low-lying placenta) may allow for vaginal delivery under strict monitoring. **High-Yield Clinical Pearls for NEET-PG:** * **Absolute Contraindications to Vaginal Delivery:** Central placenta previa, vasa previa, cord prolapse (with live fetus), transverse lie, and active primary genital herpes. * **Placenta Previa Grading:** Type I and II (Anterior) may attempt vaginal delivery; Type II (Posterior/Dangerous Type), III, and IV require CS. * **Stallworthy’s Sign:** A dip in fetal heart rate when the head is pressed into the pelvis, seen in posterior placenta previa.

Q: Which of the following is TRUE about a terminal cardiotocogram?

All of the above. **Explanation:** A **Terminal Cardiotocogram (CTG)** represents a pre-terminal fetal state, indicating severe fetal hypoxia and acidosis. It is a sign of impending fetal demise and requires immediate obstetric intervention (usually emergency Cesarean section). **Why "All of the Above" is Correct:** A terminal CTG is characterized by a combination of features that reflect the failure of the fetal autonomic nervous system and myocardium: 1. **Reduced/Absent Variability (Option A):** A baseline oscillation of **less than 5 bpm** (silent pattern) indicates that the fetal brain is no longer able to regulate the heart rate due to severe acidemia or hypoxia. 2. **Absent Accelerations (Option B):** Accelerations are a sign of fetal wellbeing. Their absence, especially when combined with other abnormal features, signifies a non-reactive and compromised fetus. 3. **Late Decelerations (Option C):** These occur due to uteroplacental insufficiency. In a terminal state, even **spontaneous uterine contractions** (which are less intense than induced ones) are enough to trigger late decelerations because the fetus has zero respiratory reserve. **Clinical Pearls for NEET-PG:** * **Definition of Normal Variability:** 5–25 bpm. * **Sinusoidal Pattern:** A specific high-yield CTG finding associated with severe fetal anemia (e.g., Rh isoimmunization) or acute fetal hemorrhage. * **Rule of 3s for Bradycardia:** 3 minutes (Abnormal), 6 minutes (Move to OT), 9 minutes (Deliver by 10th minute). * **Reassuring CTG:** Baseline 110–160 bpm, variability >5 bpm, and presence of accelerations. **Summary:** A terminal CTG is the "final warning" before intrauterine death. It is defined by a flat baseline (silent pattern), absence of reactivity, and repetitive late decelerations, making all the provided options correct.

Q: Which of the following complications during pregnancy does NOT increase the risk of postpartum hemorrhage (PPH)?

Hypertension. **Explanation:** Postpartum Hemorrhage (PPH) is primarily caused by the "4 Ts": **Tone** (Atony), **Tissue** (Retained products), **Trauma**, and **Thrombin** (Coagulopathy). Uterine atony is the most common cause (80%). **Why Hypertension is the Correct Answer:** Hypertension (including Preeclampsia) is generally associated with **vasoconstriction** and, in some cases, a hypercoagulable state. While severe preeclampsia can lead to HELLP syndrome (causing coagulopathy), hypertension itself does not cause uterine atony. In fact, some studies suggest that hypertensive disorders may slightly increase uterine tone. Therefore, among the given options, it is the least likely to be a direct risk factor for atonic PPH. **Why the other options are incorrect:** * **B. Macrosomia:** A large fetus causes **overdistension** of the myometrium. An overstretched uterus has poor contractile ability after delivery, leading to atony. * **C. Twin Pregnancy:** Similar to macrosomia, multiple gestations cause significant uterine overdistension, which is a classic risk factor for atonic PPH. * **D. Hydramnios:** Excessive amniotic fluid leads to rapid decompression and overdistension of the uterus, preventing effective contraction of the "living ligatures" (myometrial fibers) after placental expulsion. **Clinical Pearls for NEET-PG:** * **Most common cause of PPH:** Uterine Atony. * **Most common risk factor for PPH:** Overdistension of the uterus (Twins, Polyhydramnios, Macrosomia). * **Management Tip:** Active Management of Third Stage of Labor (AMTSL) reduces the risk of PPH by 60%. * **Drug Contraindication:** Ergometrine is strictly **contraindicated** in hypertensive patients as it can cause a sudden rise in blood pressure or encephalopathy.

Q: A Bishop score of more than ----- indicates that labor has begun?

6. ### Explanation The **Bishop score** (also known as the pelvic score) is a pre-induction scoring system used to assess the "ripeness" of the cervix and predict the likelihood of a successful vaginal delivery. **Why 6 is the correct answer:** A Bishop score of **6 or more** is clinically significant because it indicates a "favorable" cervix. In the context of labor, a score of $\geq 6$ suggests that the cervix is sufficiently ripe and that spontaneous labor has likely begun or that the induction of labor is highly likely to result in a successful vaginal delivery. Conversely, a score of $\leq 5$ is considered "unfavorable," often requiring cervical ripening agents (like Prostaglandins) before induction. **Analysis of Incorrect Options:** * **A (3) & B (5):** These scores represent an "unfavorable" or "unripe" cervix. If induction is attempted at these scores, there is a high risk of failure and a higher likelihood of requiring a Cesarean section. * **D (7):** While a score of 7 is indeed favorable, the standard clinical threshold for defining a ripe cervix/onset of labor in most standardized textbooks (like Williams Obstetrics) and NEET-PG patterns is **6**. **High-Yield Clinical Pearls for NEET-PG:** * **Components of Bishop Score:** Remember the mnemonic **"STATION"** or **"3S + 2C"**: **S**tation, **S**oftness (Consistency), **S**pacing (Effacement), **C**ervical Position, and **C**ervical Dilation. * **Maximum Score:** 13. * **Most Important Parameter:** Cervical **Dilation** is considered the most reliable single predictor of a successful induction. * **Modified Bishop Score:** Often replaces "effacement" with "cervical length" (in cm) for more objective measurement.

Q: What is the single most effective drug in eclampsia?

Magnesium sulphate. **Explanation:** **Magnesium sulphate ($MgSO_4$)** is the drug of choice for both the prevention and control of seizures in eclampsia. Its superiority was definitively established by the **Collaborative Eclampsia Trial**, which proved it is more effective than phenytoin or diazepam in preventing recurrent convulsions and reducing maternal mortality. **Mechanism of Action:** $MgSO_4$ acts as a central nervous system depressant and a vasodilator. It works primarily by blocking **NMDA receptors** in the brain, increasing the seizure threshold. It also causes cerebral vasodilation, which reverses the vasospasm associated with eclampsia. **Why other options are incorrect:** * **Dilantin (Phenytoin):** While an effective anti-epileptic for primary seizure disorders, it is significantly less effective than $MgSO_4$ in eclampsia and carries a higher risk of recurrent seizures. * **Phenobarbital:** This is a sedative-hypnotic. It causes significant maternal respiratory depression and neonatal depression (floppy baby syndrome) without addressing the underlying pathophysiology of eclampsia. * **Paraldehyde:** Now largely obsolete, it was used historically but is difficult to administer and lacks the specific neuroprotective benefits of Magnesium. **High-Yield Clinical Pearls for NEET-PG:** * **Regimen:** The **Pritchard Regimen** (IM) and **Zuspan Regimen** (IV) are the standard protocols. * **Therapeutic Range:** 4–7 mEq/L. * **Monitoring:** Always check for **Patellar reflex** (first to disappear), **Respiratory rate** (>12/min), and **Urine output** (>30 ml/hr) before each dose. * **Antidote:** 10 ml of 10% **Calcium Gluconate** IV (administered slowly).

Question 1

All of the following are complications of shoulder presentation except:

Accepted Answer

Shoulder dystocia

Answer

Fetal death

Answer

Uterine rupture

Answer

Obstructed labor

Question 2

Which of the following is NOT included in the modified Bishop score?

Accepted Answer

Colour of the amniotic fluid

Answer

Cervical dilation

Answer

Length of cervix

Answer

Station of the head

Question 3

Vaginal delivery is contraindicated in:

Accepted Answer

Central placenta previa

Answer

Previous lower segment caesarean section

Answer

Eclampsia

Answer

Antepartum hemorrhage

Question 4

Which of the following is TRUE about a terminal cardiotocogram?

Accepted Answer

All of the above

Answer

Baseline oscillation of less than 5 bpm

Answer

Absent accelerations

Answer

Late decelerations with spontaneous uterine contractions

Question 5

What is considered a dangerously low-lying placenta?

Accepted Answer

Type II posterior placenta

Answer

Type I anterior placenta

Answer

Type II anterior placenta

Answer

Type I posterior placenta

Question 6

Which of the following complications during pregnancy does NOT increase the risk of postpartum hemorrhage (PPH)?

Accepted Answer

Hypertension

Answer

Macrosomia

Answer

Twin pregnancy

Answer

Hydramnios

Question 7

A full-term primipara presents with antepartum hemorrhage. What is the next line of management?

Accepted Answer

Examination in the operating room followed by amniotomy

Answer

Pelvic examination

Answer

Conservative management until the onset of labor

Answer

Lower segment cesarean section

Question 8

A Bishop score of more than ----- indicates that labor has begun?

Accepted Answer

6

Answer

3

Answer

5

Answer

7

Question 9

What is the single most effective drug in eclampsia?

Accepted Answer

Magnesium sulphate

Answer

Dilantin

Answer

Phenobarbital

Answer

Paraldehyde

Question 10

What is the recommended management for intrauterine fetal death at 36 weeks gestation?

Accepted Answer

Await spontaneous expulsion

Answer

Continue pregnancy until term

Answer

Administer Syntocinon and artificial rupture of membranes (ARM)

Answer

Perform hysterectomy

Labor and Delivery — MCQs

Labor and Delivery — MCQs

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