Obstetric Hemorrhage — MCQs
In a multipara, the most common cause of postpartum hemorrhage is?
Active management of 3rd stage of labour involves all EXCEPT:
A female presents with placenta previa with active bleeding and blood pressure of 80/50 mm Hg and pulse rate of 140 bpm. The choice of anaesthesia for emergency cesarean section in this female is?
Which condition is responsible for approximately a quarter of postnatal maternal deaths?
A lady with 38 weeks of pregnancy is admitted due to a first episode of painless bleeding yesterday. On examination, her hemoglobin level is 10.5 g%, blood pressure is 124/78 mmHg, the uterus is relaxed, the head is unengaged and floating, and the fetal heart sounds are regular. Ultrasound confirms placenta previa. The next line of management is:
A 28-year-old woman, G2 P1, with severe PPH unresponsive to oxytocin presents with hypotension and tachycardia. She has a soft uterus and ongoing bleeding. What is the next best step in management?
The Anaesthesia technique of choice in severely preeclamptic women for cesarean delivery -
Which volatile anesthetic agent is MOST commonly recognized for its clinically significant tocolytic effects in obstetric anesthesia?
Which inhalational agent is the best uterine relaxant?
A pregnant patient at full term has both mitral stenosis and mitral regurgitation. If the obstetrician plans to conduct a normal delivery, what would be the preferred method of analgesia?
Obstetric Hemorrhage Indian Medical PG Practice Questions and MCQs
Question 1: In a multipara, the most common cause of postpartum hemorrhage is?
- A. Retained placenta
- B. Uterine atonicity (Correct Answer)
- C. Uterine perforation
- D. Fibroid in the uterus
Explanation: ***Uterine atonicity*** - This is the **most common cause** of postpartum hemorrhage, especially in multiparous women, where the uterus may have lost some of its tone from previous pregnancies. - After delivery, the uterus normally contracts to compress blood vessels and prevent excessive bleeding; **uterine atony** prevents this essential contraction. *Retained placenta* - While a significant cause of postpartum hemorrhage, it is less common than uterine atony overall and often presents with a **non-contracted uterus** despite attempts at fundal massage. - The placenta or fragments of it remain in the uterus, preventing complete uterine contraction and leading to continuous bleeding. *Uterine perforation* - This is a rare and usually iatrogenic cause of postpartum hemorrhage, often associated with operative procedures during delivery or uterine instrumentation. - It involves a tear in the uterine wall, leading to bleeding into the abdominal cavity, which is distinct from the typical presentation of postpartum hemorrhage. *Fibroid in the uterus* - Uterine fibroids can contribute to postpartum hemorrhage by interfering with the uterus's ability to contract effectively after delivery. - However, they are **not the most common cause**; their presence increases the risk, but uterine atony remains the predominant reason for excessive bleeding.
Question 2: Active management of 3rd stage of labour involves all EXCEPT:
- A. IV oxytocin
- B. Delayed cord clamping
- C. Controlled cord traction
- D. Uterine massage (Correct Answer)
Explanation: ***Uterine massage*** - **Uterine massage** is performed *after* the delivery of the placenta to promote sustained uterine contraction and prevent **postpartum hemorrhage**. - While it's a crucial step in preventing excessive bleeding, it is not considered part of the *active management of the third stage of labor* as defined by WHO guidelines, which focuses on interventions *during* placental separation and expulsion. - Uterine massage is part of **routine postpartum care** rather than AMTSL itself. *IV oxytocin* - Administering **prophylactic uterotonic** (oxytocin 10 IU IM/IV) *immediately* after birth of the baby (within 1 minute) is a **core component** of active management. - Oxytocin stimulates uterine contractions to aid placental separation and significantly **reduces postpartum hemorrhage** risk. *Delayed cord clamping* - **Delayed cord clamping** (clamping the umbilical cord between 1-3 minutes after birth) is recommended by **current WHO guidelines** as part of active management. - This practice provides neonatal benefits (improved iron stores, better hemoglobin levels) while not increasing maternal hemorrhage risk. - This replaced the older practice of early cord clamping in modern AMTSL protocols. *Controlled cord traction* - **Controlled cord traction** with **counter-traction on the uterus** (Brandt-Andrews maneuver) is performed to facilitate placental delivery once signs of placental separation appear. - This maneuver **reduces the duration of third stage**, blood loss, and risk of retained placenta.
Question 3: A female presents with placenta previa with active bleeding and blood pressure of 80/50 mm Hg and pulse rate of 140 bpm. The choice of anaesthesia for emergency cesarean section in this female is?
- A. General anesthesia with intravenous propofol
- B. Spinal anesthesia
- C. General anesthesia with intravenous ketamine (Correct Answer)
- D. Epidural anesthesia
Explanation: ***General anesthesia with intravenous ketamine*** - **Ketamine** maintains sympathetic tone, supporting **blood pressure** in patients with significant **hemorrhage** and **hypovolemic shock**. - Its **bronchodilatory** properties are also beneficial, making it a suitable choice for this emergency scenario where the patient is **hemodynamically unstable**. *General anesthesia with intravenous propofol* - **Propofol** can cause significant **vasodilation** and myocardial depression, which would worsen the patient's existing **hypotension** and **tachycardia**. - Its use in an actively bleeding, **hemodynamically unstable** patient is generally contraindicated due to the risk of further **cardiovascular collapse**. *Spinal anesthesia* - **Spinal anesthesia** is contraindicated in patients with significant **hypovolemia** and **active bleeding** due to the risk of severe **hypotension**. - The sympathetic blockade caused by spinal anesthesia would exacerbate the patient's already compromised **hemodynamic status**, potentially leading to **cardiac arrest**. *Epidural anesthesia* - Similar to spinal anesthesia, **epidural anesthesia** causes **sympathetic blockade** and can lead to **hypotension**, making it unsuitable for a patient with **active bleeding** and **hypovolemic shock**. - The onset of **epidural blockade** is slower than spinal, but the hemodynamic effects are still detrimental in this critically ill patient.
Question 4: Which condition is responsible for approximately a quarter of postnatal maternal deaths?
- A. Eclampsia
- B. Anemia
- C. Infection
- D. Postpartum hemorrhage (PPH) (Correct Answer)
Explanation: ***Postpartum hemorrhage (PPH)*** - **Postpartum hemorrhage (PPH)** is the leading cause of maternal mortality worldwide, accounting for roughly a quarter of all postnatal maternal deaths. - PPH is defined as a blood loss of **500 mL or more** within 24 hours after vaginal birth, or **1000 mL or more** after a Cesarean section, and can lead to hypovolemic shock and death if not promptly managed. *Infection* - **Maternal infections**, such as puerperal sepsis, are a significant cause of maternal mortality but typically rank after PPH in overall incidence. - While infections contribute to postnatal deaths, they do not account for as high a proportion as PPH. *Eclampsia* - **Eclampsia** is a severe complication of pre-eclampsia, characterized by seizures, and is a major cause of maternal mortality and morbidity. - Though serious, its contribution to overall maternal deaths, while substantial, is less than that of PPH globally. *Anemia* - **Anemia** in the postpartum period can exacerbate other complications and increase the risk of maternal morbidity, but it is rarely a direct cause of maternal death on its own. - Severe anemia can lower the threshold for adverse outcomes from blood loss or infection but is not a primary cause of death at the same rate as PPH.
Question 5: A lady with 38 weeks of pregnancy is admitted due to a first episode of painless bleeding yesterday. On examination, her hemoglobin level is 10.5 g%, blood pressure is 124/78 mmHg, the uterus is relaxed, the head is unengaged and floating, and the fetal heart sounds are regular. Ultrasound confirms placenta previa. The next line of management is:
- A. Caesarean section (Correct Answer)
- B. Induction of labor
- C. Wait and watch
- D. Blood transfusion
Explanation: ***Caesarean section*** - The combination of **painless vaginal bleeding** and an **unengaged, floating fetal head** in a 38-week pregnancy strongly suggests **placenta previa**. - **Placenta previa** is an absolute contraindication to vaginal delivery, necessitating a **Cesarean section** to prevent catastrophic hemorrhage. *Induction of labor* - **Vaginal examination** and, consequently, **induction of labor** are contraindicated in suspected or confirmed placenta previa due to the risk of severe hemorrhage. - Applying pressure to the cervix or performing an artificial rupture of membranes could directly traumatize the placental blood vessels. *Wait and watch* - While initial bleeding might temporarily stop, the risk of a more severe and sudden hemorrhage remains high with **placenta previa**, especially as labor progresses. - At 38 weeks, the fetus is term, and waiting carries unnecessary risks for both mother and fetus without clear benefit. *Blood transfusion* - Although the patient's hemoglobin is slightly low at 10.5 g%, the primary issue is the potential for acute, severe hemorrhage, not chronic anemia requiring immediate transfusion as the definitive management. - A **blood transfusion** might be indicated as supportive care if significant blood loss occurs, but it is not the primary management for placenta previa.
Question 6: A 28-year-old woman, G2 P1, with severe PPH unresponsive to oxytocin presents with hypotension and tachycardia. She has a soft uterus and ongoing bleeding. What is the next best step in management?
- A. IM carboprost (Correct Answer)
- B. Immediate hysterectomy
- C. Expectant management
- D. IV tranexamic acid
Explanation: ***IM carboprost*** - The **soft uterus** with ongoing bleeding despite oxytocin indicates **uterine atony** as the cause of PPH - Carboprost (PGF2α) is the **standard second-line uterotonic agent** after oxytocin failure - Effectively stimulates strong **uterine contractions** to control hemorrhage from the placental bed - Given intramuscularly at **0.25 mg every 15-90 minutes** (maximum 8 doses) - Contraindicated in active cardiac, pulmonary, or hepatic disease *Immediate hysterectomy* - Peripartum hysterectomy is a **last-resort surgical intervention** for refractory PPH - Should only be performed after failure of medical management (all uterotonics) and conservative surgical options (uterine tamponade, uterine artery ligation, B-Lynch suture) - **Too aggressive** as the immediate next step when second-line uterotonics haven't been tried *Expectant management* - **Completely inappropriate** for severe PPH with hemodynamic instability (hypotension, tachycardia) - Ongoing bleeding from uterine atony requires **immediate aggressive intervention** - Delays increase risk of hypovolemic shock, DIC, maternal morbidity, and mortality *IV tranexamic acid* - **Antifibrinolytic agent** that inhibits plasminogen activation, promoting clot stability - WHO recommends administration **within 3 hours** of PPH onset as an adjunct therapy - While useful in PPH management, it does **not address uterine atony** (the primary cause indicated by soft uterus) - Should be given **in addition to uterotonics**, not as a substitute for definitive management of atony
Question 7: The Anaesthesia technique of choice in severely preeclamptic women for cesarean delivery -
- A. Spinal Anaesthesia (Correct Answer)
- B. General Anaesthesia
- C. Epidural Anaesthesia
- D. Pudendal block
Explanation: ***Spinal Anaesthesia*** - **Spinal anaesthesia** is generally preferred due to its rapid onset, excellent muscle relaxation, and better hemodynamic stability compared to general anaesthesia when careful fluid management is in place. - It avoids the risks associated with **difficult airway management** and aspiration in preeclamptic patients and minimizes fetal drug exposure. *General Anaesthesia* - **General anaesthesia** carries a higher risk of **rapid, unpredictable increases in blood pressure** during tracheal intubation and extubation, which can be dangerous in preeclampsia with an already compromised cardiovascular system. - It is associated with increased risks of **aspiration**, **difficult airway**, and **postoperative respiratory complications** in preeclamptic women. *Epidural Anaesthesia* - While generally safe, **epidural anaesthesia** has a slower onset compared to spinal anaesthesia, which may not be ideal in emergency situations requiring rapid delivery. - The titration of an epidural can be more challenging in patients with severe preeclampsia, where rapid changes in blood pressure need careful management. *Pudendal block* - A **pudendal block** provides local anaesthesia to the perineum, vulva, and lower vagina. - It is used for pain relief during vaginal delivery and is unsuitable for a **cesarean section**, which requires anaesthesia of the abdominal wall and uterus.
Question 8: Which volatile anesthetic agent is MOST commonly recognized for its clinically significant tocolytic effects in obstetric anesthesia?
- A. Isoflurane (Correct Answer)
- B. Sevoflurane
- C. Nitrous oxide
- D. Desflurane
Explanation: ***Isoflurane*** - **Isoflurane** is well-known for its potent dose-dependent uterine relaxation (tocolytic) properties, which can be clinically useful during obstetric procedures requiring uterine quiescence, such as manual placenta removal or fetal manipulation. - This effect is due to its ability to decrease the frequency and intensity of uterine contractions by relaxing myometrial smooth muscle. *Sevoflurane* - While sevoflurane does possess uterine relaxant properties, its tocolytic effect is generally considered less potent compared to isoflurane at equipotent doses. - It is frequently favored for maintenance of anesthesia in obstetrics due to its rapid onset and offset, but its uterine relaxation is often less pronounced than that of isoflurane. *Desflurane* - Desflurane also causes dose-dependent uterine relaxation, but its tocolytic effects are not typically considered as significant or as commonly utilized for specific uterine relaxation needs as isoflurane. - Its rapid pharmacokinetics make it suitable for obstetric anesthesia, but its uterine effects are generally in line with other volatile agents, with isoflurane having a more pronounced reputation for tocolysis. *Nitrous oxide* - **Nitrous oxide** has minimal to no direct significant uterine relaxant (tocolytic) effects, making it a common choice for analgesia during labor in sub-anesthetic concentrations. - It does not cause the widespread smooth muscle relaxation observed with potent volatile agents, hence is not used for obstetric scenarios requiring uterine quiescence.
Question 9: Which inhalational agent is the best uterine relaxant?
- A. Halothane (Correct Answer)
- B. Isoflurane
- C. Sevoflurane
- D. Desflurane
Explanation: **Explanation:** **1. Why Halothane is the Correct Answer:** All volatile inhalational anesthetics cause dose-dependent relaxation of uterine smooth muscle by interfering with calcium mobilization. However, **Halothane** is historically and clinically recognized as the most potent uterine relaxant among the options. It produces profound uterine atony even at low concentrations. This property makes it the "gold standard" when rapid and maximal uterine relaxation is required, such as during **internal podalic version, manual removal of a retained placenta, or breech extraction.** **2. Analysis of Incorrect Options:** * **Isoflurane, Sevoflurane, and Desflurane:** While these modern ethers also decrease uterine tone in a dose-dependent manner (especially >0.5 MAC), their relaxant effect is significantly less than that of Halothane at equivalent MAC values. In routine Cesarean sections, these agents are preferred over Halothane because they allow for better uterine contraction following oxytocin administration, thereby reducing the risk of Postpartum Hemorrhage (PPH). **3. Clinical Pearls for NEET-PG:** * **The "Double-Edged Sword":** While Halothane is best for relaxing the uterus for obstetric maneuvers, it is contraindicated in routine labor or C-sections where uterine contraction is vital to prevent PPH. * **MAC and Uterine Tone:** At concentrations <0.5 MAC, the effect of volatile agents on uterine tone is minimal and usually clinically insignificant. * **Agent of Choice for Induction:** Sevoflurane is the agent of choice for inhalational induction in general, but specifically for uterine relaxation, Halothane remains the classic textbook answer. * **Nitrous Oxide ($N_2O$):** Unlike volatile agents, $N_2O$ does not affect uterine contractility.
Question 10: A pregnant patient at full term has both mitral stenosis and mitral regurgitation. If the obstetrician plans to conduct a normal delivery, what would be the preferred method of analgesia?
- A. Parenteral opioids
- B. General anesthesia
- C. Inhalational analgesia
- D. Neuraxial analgesia (Correct Answer)
Explanation: ### Explanation The primary goal in managing a patient with combined **Mitral Stenosis (MS) and Mitral Regurgitation (MR)** during labor is to prevent tachycardia, maintain stable venous return, and avoid sudden increases in systemic vascular resistance (SVR). **Why Neuraxial Analgesia is the Correct Choice:** Continuous **Epidural Analgesia** (a form of neuraxial analgesia) is the gold standard. It provides superior pain relief, which blunts the sympathetic response to labor pains. This prevents tachycardia (crucial for MS to allow diastolic filling) and reduces the surge in catecholamines that increases SVR (beneficial for MR to promote forward flow). Furthermore, it allows for a controlled, segmental block that minimizes sudden hemodynamic shifts. **Analysis of Incorrect Options:** * **Parenteral Opioids:** These provide inadequate analgesia compared to neuraxial techniques. The resulting pain can cause maternal tachycardia and increased cardiac output, potentially leading to pulmonary edema in a stenotic valve. * **General Anesthesia:** This is generally reserved for emergency Cesarean sections. The sympathetic stimulation during intubation and the myocardial depressant effects of anesthetic agents are risky for patients with valvular heart disease. * **Inhalational Analgesia (e.g., Entonox):** While simple, it offers inconsistent pain relief and does not provide the beneficial sympathetic blockade required to stabilize the hemodynamics of a patient with MS/MR. **Clinical Pearls for NEET-PG:** * **Mitral Stenosis** is the most common valvular lesion in pregnancy (often Rheumatic). * **The "Rule of Slow, Tight, and Dry"** applies to MS: Keep heart rate **slow**, maintain **tight** SVR, and keep the patient relatively **dry** (avoid fluid overload). * In **MR**, the goal is "Fast, Forward, and Full": Maintain a slightly higher heart rate and lower SVR to encourage forward flow. * When MS and MR coexist, the **stenotic component** usually dictates the hemodynamic management, making heart rate control the priority.
Want unlimited practice?
Get full access to all questions, explanations, and performance tracking.
Start For Free