Labor and Delivery Practice Questions

Q: What is an indication for induction of labor?

Postterm pregnancy. **Explanation:** **Postterm pregnancy (Option B)** is a classic indication for the induction of labor (IOL). A pregnancy is considered postterm when it exceeds 42 weeks. Beyond this point, there is a significant increase in perinatal morbidity and mortality due to **placental insufficiency**, oligohydramnios, and meconium aspiration syndrome. Induction is typically recommended between 41 and 42 weeks to prevent these complications. **Analysis of Incorrect Options:** * **Placenta previa (Option A):** This is an **absolute contraindication** to induction and vaginal delivery. Since the placenta covers the internal os, labor would lead to catastrophic maternal hemorrhage. These cases require a planned Cesarean section. * **Preterm labor (Option C):** This is a condition where labor starts spontaneously before 37 weeks. The clinical goal is usually to delay delivery (using tocolytics) to allow for corticosteroid administration, not to induce it. * **Breech presentation (Option D):** While not an absolute contraindication to vaginal delivery in specific criteria, it is **not an indication for induction**. Inducing a breech presentation increases the risk of cord prolapse and head entrapment; most are managed via elective Cesarean section. **High-Yield Clinical Pearls for NEET-PG:** * **Bishop Score:** Used to assess "cervical ripeness" before induction. A score of **≥8** suggests a high likelihood of successful vaginal delivery. * **Common Indications for IOL:** Preeclampsia/Eclampsia, Premature Rupture of Membranes (PROM), Chorioamnionitis, and Fetal Growth Restriction (FGR). * **Absolute Contraindications to IOL:** Vasa previa, transverse lie, prior classical (vertical) Cesarean section, and active genital herpes.

Q: What is the name of the graph that shows the relationship between cervical dilatation and the duration of labor?

Cervicograph. **Explanation:** The correct answer is **B. Cervicograph**. A **Cervicograph** is a specific graphical representation where cervical dilatation (in centimeters) is plotted on the Y-axis against the duration of labor (in hours) on the X-axis. This concept was pioneered by **Friedman** in 1954, resulting in the characteristic sigmoid-shaped "Friedman’s Curve," which describes the latent and active phases of the first stage of labor. **Analysis of Options:** * **A. Partogram:** While often used interchangeably in casual clinical settings, a Partogram is a *composite* record. It includes the cervicograph but also monitors maternal vitals, fetal heart rate, descent of the head, and uterine contractions. The cervicograph is specifically the component tracking dilatation. * **C. Growth curve:** This is used in pediatrics to monitor a child’s physical development or in obstetrics to track fetal weight/symphysio-fundal height, not labor progress. * **D. Dilatation chart:** This is a generic descriptive term but not the formal medical nomenclature used in obstetric practice. **Clinical Pearls for NEET-PG:** * **Friedman’s Curve:** Sigmoid-shaped; identifies the latent phase (slow dilatation) and active phase (acceleration, maximum slope, and deceleration). * **WHO Partograph:** Unlike Friedman’s curve, the WHO partograph (modified) starts only when the active phase begins (4 cm dilatation) and includes **Alert** and **Action** lines. * **Philpott and Castle:** They introduced the Alert and Action lines to the partogram to identify prolonged labor early. * **Active Phase Rule:** In the active phase, the minimum rate of cervical dilatation should be **1.2 cm/hr** for primigravida and **1.5 cm/hr** for multigravida.

Q: A multiparous woman at 38 weeks of gestation, with a history of previous lower segment cesarean section (LSCS), presents in shock. What is the most likely differential diagnosis?

All of the above. **Explanation:** The clinical presentation of a multiparous woman in late pregnancy with a history of a previous uterine scar (LSCS) presenting in shock constitutes an obstetric emergency. The correct answer is **"All of the above"** because each of these conditions can lead to massive hemorrhage and hypovolemic shock. 1. **Uterine Rupture:** This is the most critical suspicion in a patient with a previous LSCS. The scarred uterus is a weak point; rupture can lead to massive intraperitoneal hemorrhage, fetal distress, and rapid maternal collapse (shock). 2. **Abruptio Placentae:** Multiparous women are at higher risk for placental abruption. Severe "concealed" or "revealed" hemorrhage can lead to shock, often out of proportion to visible blood loss, and may trigger DIC. 3. **Placenta Previa:** A previous LSCS is a major risk factor for placenta previa and the morbidly adherent placenta spectrum (Placenta Accreta). Sudden, painless, profuse bleeding can lead to immediate hemorrhagic shock. **Why "All of the above" is correct:** In a NEET-PG context, when a patient presents in shock during the third trimester, you must consider all causes of **Antepartum Hemorrhage (APH)** and **Uterine Rupture**. While the previous scar points strongly toward rupture, it also significantly increases the risk of abnormal placentation (Previa/Accreta). **Clinical Pearls for NEET-PG:** * **Scar Tenderness:** The earliest sign of impending uterine rupture in a patient with a previous LSCS. * **Couvelaire Uterus:** Associated with severe Abruptio Placentae (extravasation of blood into the myometrium). * **Classic Triad of Rupture:** Sudden abdominal pain, cessation of uterine contractions, and recession of the presenting part (Station becomes higher). * **Management:** Immediate resuscitation (ABC), large-bore IV lines, and emergency laparotomy/delivery.

Q: What is the most sensitive test for acute fetal distress?

Loss of beat-to-beat variation of heart rate. **Explanation:** **1. Why Option B is Correct:** Beat-to-beat variability (short-term variability) is the most sensitive indicator of fetal well-being. It reflects the continuous interaction between the fetal sympathetic and parasympathetic nervous systems. In the presence of **acute fetal distress (hypoxia/acidosis)**, the fetal brain and autonomic nervous system are the first to be affected, leading to a "flat" or diminished baseline variability. The **loss of beat-to-beat variation** is often the earliest sign of fetal compromise, preceding late decelerations. **2. Why Other Options are Incorrect:** * **Option A (Fresh meconium):** While meconium-stained liquor can be a sign of fetal distress, it is often a non-specific finding (seen in post-term pregnancies or breech presentation) and is less sensitive than heart rate changes. * **Option C (Increased fetal movements):** Fetal distress is typically associated with *decreased* or absent fetal movements (the "alarm signal"). While a sudden burst of hyperactive movement can occasionally precede fetal demise, it is not a standardized clinical test. * **Option D (Type 1 dips):** Also known as early decelerations, these are caused by fetal head compression during labor. They are considered physiological (benign) and are not indicative of fetal distress. **Clinical Pearls for NEET-PG:** * **Normal Variability:** 6 to 25 beats per minute. * **Most Specific Sign:** Late decelerations (Type II dips) are highly specific for uteroplacental insufficiency but may appear later than loss of variability. * **Gold Standard for Confirmation:** If CTG is non-reassuring, **Fetal Scalp Blood pH** is the most definitive test (pH < 7.20 indicates acidosis). * **Sinusoidal Pattern:** Indicates severe fetal anemia (e.g., Rh isoimmunization).

Q: Tocolytics are beneficial in preterm labor because:

They provide time for antenatal steroids.. **Explanation:** The primary goal of tocolytic therapy in preterm labor is not to stop labor indefinitely, but to achieve a **"window of opportunity"** (usually 48 hours). This delay allows for the administration of **antenatal corticosteroids** (e.g., Betamethasone or Dexamethasone), which significantly accelerate fetal lung maturity and reduce the incidence of Respiratory Distress Syndrome (RDS), Intraventricular Hemorrhage (IVH), and Necrotizing Enterocolitis (NEC). It also allows time for **in-utero transfer** to a tertiary care center with a Neonatal ICU (NICU) and for **magnesium sulfate** administration for fetal neuroprotection (if <32 weeks). **Analysis of Options:** * **Option A & D:** Tocolytics are generally ineffective at permanently arresting preterm labor or prolonging pregnancy to term. Most agents only delay delivery by 48 hours to 7 days. * **Option B:** While tocolytics facilitate interventions that improve outcomes, they do not *directly* decrease perinatal mortality. The reduction in mortality is a secondary effect of the steroids and improved neonatal care. **NEET-PG High-Yield Pearls:** * **First-line Tocolytic:** **Nifedipine** (Calcium Channel Blocker) is currently the preferred agent due to its efficacy and safety profile. * **Atosiban:** A selective Oxytocin receptor antagonist; highly effective with fewer maternal side effects but expensive. * **Contraindications:** Tocolysis is contraindicated in cases of chorioamnionitis, severe pre-eclampsia, abruption, or fetal demise. * **Drug of Choice for Neuroprotection:** Magnesium Sulfate (given if delivery is imminent before 32 weeks).

Q: What is the most constant early symptom of uterine rupture during labor?

Pain. **Explanation:** Uterine rupture is a life-threatening obstetric emergency. The most constant early symptom is **abdominal pain**, which is typically described as sudden, sharp, and shooting in nature. This pain often persists even between uterine contractions and is frequently localized to the site of a previous scar (scar tenderness). **Why the other options are incorrect:** * **Shock (A):** While shock is a classic sign of rupture, it is often a **late** manifestation resulting from significant hemoperitoneum. It may not be present in the early stages, especially if the rupture is incomplete or bleeding is contained. * **Vaginal bleeding (C):** Bleeding is an inconsistent sign. In many cases of complete rupture, the bleeding is primarily **internal** (intraperitoneal), and external vaginal bleeding may be minimal or absent. * **Cessation of labor (D):** The sudden disappearance of uterine contractions is a classic sign, but it occurs **after** the rupture has taken place. Pain usually precedes the loss of uterine tone. **NEET-PG High-Yield Pearls:** * **Most common cause:** Dehiscence of a previous Cesarean section scar. * **Most common sign:** The most reliable and earliest **sign** (objective finding) is **fetal heart rate (FHR) abnormalities**, most commonly prolonged decelerations or bradycardia. * **Pathognomonic sign:** Recession of the presenting part (e.g., the fetal head moves back up the birth canal) is highly suggestive of rupture. * **Clinical triad:** Sudden abdominal pain, vaginal bleeding, and fetal distress/death.

Question 1

In twin pregnancy, what is the treatment of choice when the first baby is in a transverse lie?

Accepted Answer

Cesarean section

Answer

Home delivery

Answer

High forceps

Answer

Low forceps after external rotation

Question 2

What is an indication for induction of labor?

Accepted Answer

Postterm pregnancy

Answer

Placenta previa

Answer

Preterm labor

Answer

Breech presentation

Question 3

What is the name of the graph that shows the relationship between cervical dilatation and the duration of labor?

Accepted Answer

Cervicograph

Answer

Partogram

Answer

Growth curve

Answer

Dilatation chart

Question 4

A multiparous woman at 38 weeks of gestation, with a history of previous lower segment cesarean section (LSCS), presents in shock. What is the most likely differential diagnosis?

Accepted Answer

All of the above

Answer

Placenta previa

Answer

Abruptio placenta

Answer

Uterine rupture

Question 5

What is the most sensitive test for acute fetal distress?

Accepted Answer

Loss of beat-to-beat variation of heart rate

Answer

Fresh meconium on induction of labor

Answer

Increased fetal movements

Answer

Type 1 dips in the second stage

Question 6

Which of the following is a contraindication for vaginal birth after a previous cesarean section, except?

Accepted Answer

Previous lower segment transverse cesarean

Answer

Previous classical uterine incision

Answer

Presence of inverted T-shaped uterine incision

Answer

Where facilities for emergency cesarean are not available

Question 7

What is the most common cause of placenta previa?

Accepted Answer

Previous cesarean section

Answer

Myomectomy

Answer

Primigravida

Answer

Multigravida

Question 8

Tocolytics are beneficial in preterm labor because:

Accepted Answer

They provide time for antenatal steroids.

Answer

They arrest preterm labor.

Answer

They decrease prenatal mortality.

Answer

They prolong pregnancy to term.

Question 9

What is the most constant early symptom of uterine rupture during labor?

Accepted Answer

Pain

Answer

Shock

Answer

Vaginal bleeding

Answer

Cessation of labor

Question 10

A 32-year-old primigravida (G3 P1L1A0) at full term is admitted to the labor ward. On initial assessment, she exhibits uterine contractions every 2 minutes, lasting 30-35 seconds. Abdominal palpation reveals 3/5th of the fetal head palpable abdominally. Pelvic examination shows a cervical dilation of 4 cm with intact membranes. Four hours later, repeat pelvic examination shows 5 cm cervical dilation, with the fetal head station unchanged. Her cervicograph remains to the right of the alert line. Which of the following statements is true?

Accepted Answer

Her cervical progress suggests the need for intervention.

Answer

The fetal head was engaged at the time of presentation.

Answer

Her cervical progress is satisfactory.

Answer

On repeat examination, her cervicograph should have reached the action line.

Labor and Delivery — MCQs

Labor and Delivery — MCQs

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