Prevention of postpartum hemorrhage US Medical PG Practice Questions and MCQs
Practice US Medical PG questions for Prevention of postpartum hemorrhage. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Prevention of postpartum hemorrhage US Medical PG Question 1: A 35-year-old G3P2 woman currently 39 weeks pregnant presents to the emergency department with painful vaginal bleeding shortly after a motor vehicle accident in which she was a passenger. She had her seat belt on and reports that the airbag deployed immediately upon her car's impact against a tree. She admits that she actively smokes cigarettes. Her prenatal workup is unremarkable. Her previous pregnancies were remarkable for one episode of chorioamnionitis that resolved with antibiotics. Her temperature is 98.6°F (37°C), blood pressure is 90/60 mmHg, pulse is 130/min, and respirations are 20/min. The fetal pulse is 110/min. Her uterus is tender and firm. The remainder of her physical exam is unremarkable. What is the most likely diagnosis?
- A. Placental abruption (Correct Answer)
- B. Eclampsia
- C. Vasa previa
- D. Preterm labor
- E. Preeclampsia
Prevention of postpartum hemorrhage Explanation: ***Placental abruption***
- The patient's presentation with **painful vaginal bleeding** after blunt abdominal trauma (motor vehicle accident), a **tender and firm uterus**, maternal **hypotension** and **tachycardia**, and fetal **bradycardia** is highly characteristic of placental abruption.
- Risk factors like **smoking** and trauma further increase the likelihood of placental abruption.
*Eclampsia*
- Eclampsia is characterized by **new-onset grand mal seizures** in a pregnant woman with preeclampsia, which is not present in this scenario.
- While the patient's low blood pressure and tachycardia are concerning, they do not point to eclampsia.
*Vasa previa*
- Vasa previa involves **fetal blood vessels** running within the fetal membranes over the internal cervical os, risking rupture during labor or membrane rupture, leading to **painless vaginal bleeding** and **fetal distress**.
- The bleeding in this case is described as painful, and the uterine tenderness and firmness are not typical of vasa previa.
*Preterm labor*
- Preterm labor is defined by **regular uterine contractions** causing cervical changes before 37 weeks of gestation, which is not aligned with the patient being 39 weeks pregnant or her symptoms.
- While trauma can initiate labor, the severity of the bleeding and maternal/fetal distress point away from isolated preterm labor.
*Preeclampsia*
- Preeclampsia is characterized by **new-onset hypertension** (blood pressure ≥140/90 mmHg) and **proteinuria** after 20 weeks of gestation.
- This patient presents with hypotension and no mention of hypertension or proteinuria, making preeclampsia unlikely.
Prevention of postpartum hemorrhage US Medical PG Question 2: A 39-year-old woman, gravida 5, para 4, at 41 weeks' gestation is brought to the hospital because of regular uterine contractions that started 2 hours ago. Pregnancy has been complicated by iron deficiency anemia treated with iron supplements. Pelvic examination shows the cervix is 90% effaced and 7-cm dilated; the vertex is at -1 station. Fetal heart tracing is shown. The patient is repositioned, O2 therapy is initiated, and amnioinfusion is done. A repeat assessment after 20 minutes shows a similar cervical status, and no changes in the fetal heart tracing, and less than 5 contractions in a period of 10 minutes.What is the most appropriate next step in management?
- A. Emergent cesarean delivery (Correct Answer)
- B. Monitor without intervention
- C. Begin active pushing
- D. Retry maternal repositioning
- E. Administer tocolytics
Prevention of postpartum hemorrhage Explanation: ***Emergent cesarean delivery***
- The fetal heart tracing shows **recurrent late decelerations** unresponsive to **intrauterine resuscitation** (repositioning, O2, amnioinfusion), indicating fetal distress and uteroplacental insufficiency.
- Given the fetal distress and persistent late decelerations despite interventions, **expedited delivery** via cesarean section is indicated to prevent further fetal compromise.
*Monitor without intervention*
- This approach is inappropriate as the fetal heart tracing indicates **fetal distress** with recurrent **late decelerations** that have not resolved with initial interventions.
- Continued monitoring without action would place the fetus at risk for **hypoxia** and acidosis.
*Begin active pushing*
- The cervix is 7-cm dilated, meaning the patient is still in the **active phase of labor** and has not reached **complete cervical dilation** (10 cm) necessary for effective pushing.
- Pushing at this stage is unlikely to resolve the fetal distress and can potentially worsen **fetal acidosis** and maternal exhaustion.
*Retry maternal repositioning*
- The patient has already been repositioned and received other intrauterine resuscitation measures (O2 therapy, amnioinfusion) without improvement in the fetal heart tracing.
- Repeated repositioning alone is unlikely to resolve the underlying cause of the **late decelerations** in this context.
*Administer tocolytics*
- Tocolytics are used to **reduce uterine contractions** and manage conditions like **uterine tachysystole** or arrested labor, which are not explicitly present as the primary problem here (less than 5 contractions in 10 minutes).
- While they can temporarily improve uterine blood flow, they do not address the persistent **fetal distress** indicated by the recurrent late decelerations unresponsive to other interventions.
Prevention of postpartum hemorrhage US Medical PG Question 3: A 22-year-old G4P2 at 35 weeks gestation presents to the hospital after she noticed that "her water broke." Her prenatal course is unremarkable, but her obstetric history includes postpartum hemorrhage after her third pregnancy, attributed to a retained placenta. The patient undergoes augmentation of labor with oxytocin and within four hours delivers a male infant with Apgar scores of 8 and 9 at 1 and 5 minutes, respectively. Three minutes later, the placenta passes the vagina, but a smooth mass attached to the placenta continues to follow. Her temperature is 98.6°F (37°C), blood pressure is 110/70 mmHg, pulse is 90/min, and respirations are 20/min. What is the most likely complication in the absence of intervention?
- A. Hypertension
- B. Hemorrhagic shock (Correct Answer)
- C. Tachypnea
- D. Heart failure
- E. Hyperthermia
Prevention of postpartum hemorrhage Explanation: ***Hemorrhagic shock***
- The presenting symptoms suggest **uterine inversion**, a rare but serious obstetrical emergency where the uterus turns inside out, which is usually accompanied by a **sudden gush of blood** or **postpartum hemorrhage**.
- Without immediate intervention to correct the uterine inversion and manage bleeding, the rapid and significant blood loss will lead to **hemorrhagic shock**, characterized by inadequate tissue perfusion and oxygen delivery.
*Hypertension*
- **Uterine inversion** and associated significant blood loss would typically lead to **hypotension** and shock, not hypertension.
- Hypertension in the postpartum period is usually linked to conditions like **preeclampsia** or **essential hypertension**, which are not indicated here.
*Tachypnea*
- While tachypnea can be a symptom of **hemorrhagic shock** due to metabolic acidosis and compensatory mechanisms, it is a *symptom* of the underlying problem, not the most likely primary complication itself.
- The immediate life-threatening complication from uterine inversion is **massive blood loss**, leading to shock.
*Heart failure*
- **Acute heart failure** due to uterine inversion or postpartum hemorrhage is unlikely unless the patient has pre-existing cardiac conditions or develops severe, prolonged shock leading to multi-organ dysfunction.
- The immediate concern is the **circulatory collapse** from blood loss, not primary cardiac failure.
*Hyperthermia*
- **Hyperthermia** (fever) is typically associated with **infection**, such as endometritis or chorioamnionitis, and not a direct consequence of uterine inversion or immediate postpartum hemorrhage.
- The patient's temperature is normal, indicating no infection at presentation.
Prevention of postpartum hemorrhage US Medical PG Question 4: A 24-year-old primigravida presents at 36 weeks gestation with vaginal bleeding, mild abdominal pain, and uterine contractions that appeared after bumping into a handrail. The vital signs are as follows: blood pressure 130/80 mm Hg, heart rate 79/min, respiratory rate 12/min, and temperature 36.5℃ (97.7℉). The fetal heart rate was 145/min. Uterine fundus is at the level of the xiphoid process. Slight uterine tenderness and contractions are noted on palpation. The perineum is bloody. The gynecologic examination shows no vaginal or cervical lesions. The cervix is long and closed. Streaks of bright red blood are passing through the cervix. A transabdominal ultrasound shows the placenta to be attached to the lateral uterine wall with a marginal retroplacental hematoma (an approximate volume of 150 ml). The maternal hematocrit is 36%. What is the next best step in the management of this patient?
- A. Manage as an outpatient with modified rest
- B. Induction of vaginal labor
- C. Corticosteroid administration and schedule a cesarean section after
- D. Admit for maternal and fetal monitoring and observation (Correct Answer)
- E. Urgent cesarean delivery
Prevention of postpartum hemorrhage Explanation: ***Admit for maternal and fetal monitoring and observation***
- This patient presents with signs of a **mild placental abruption** (vaginal bleeding, contractions, mild abdominal pain, retroplacental hematoma) after trauma, but her **vital signs are stable**, fetal heart rate is reassuring, and the abruption volume is relatively small.
- Expectant management with **close monitoring** for signs of worsening abruption (increasing pain, vital sign changes, fetal distress) is appropriate for a patient at 36 weeks with a non-catastrophic abruption.
*Manage as an outpatient with modified rest*
- Given the presence of **vaginal bleeding, contractions**, and a **retroplacental hematoma** suggesting placental abruption, outpatient management is not safe.
- There is a risk of the abruption progressing, requiring immediate medical intervention, making **hospital admission for close monitoring** essential.
*Induction of vaginal labor*
- While vaginal delivery might be considered for a stable abruption in some cases, **active induction is not the immediate next step** given the patient's stable status and the need for continuous monitoring.
- The **cervix is long and closed**, indicating that she is not in active labor and immediate induction might not be successful or necessary.
*Corticosteroid administration and schedule a cesarean section after*
- **Corticosteroids** are typically administered for fetal lung maturity when delivery is anticipated before **34 weeks of gestation**; at 36 weeks, this is generally not indicated.
- A scheduled cesarean section is premature as the patient is **stable**, and the immediate goal is to monitor for progression or resolution of the abruption, not immediate delivery.
*Urgent cesarean delivery*
- There are no signs of **maternal or fetal distress** (stable vitals, reassuring fetal heart rate) that would necessitate an urgent cesarean delivery.
- An urgent cesarean is reserved for cases of **severe abruption** with significant bleeding, hemodynamic instability, or fetal compromise.
Prevention of postpartum hemorrhage US Medical PG Question 5: Immediately following prolonged delivery of the placenta at 40 weeks gestation, a 32-year-old multiparous woman develops vaginal bleeding. Other than mild asthma, the patient’s pregnancy has been uncomplicated. She has attended many prenatal appointments and followed the physician's advice about screening for diseases, laboratory testing, diet, and exercise. Previous pregnancies were uncomplicated. She has no history of a serious illness. She is currently on intravenous infusion of oxytocin. Her temperature is 37.2°C (99.0°F), blood pressure is 108/60 mm Hg, pulse is 88/min, and respirations are 17/min. Uterine palpation reveals a soft enlarged fundus that extends above the umbilicus. Based on the assessment of the birth canal and placenta, which of the following options is the most appropriate initial step in patient management?
- A. Intramuscular carboprost
- B. Manual exploration of the uterus
- C. Discontinuing oxytocin
- D. Intravenous methylergonovine
- E. Uterine fundal massage (Correct Answer)
Prevention of postpartum hemorrhage Explanation: ***Uterine fundal massage***
- The patient presents with **postpartum hemorrhage** indicated by vaginal bleeding and a **soft, enlarged fundus** after placental delivery, suggesting **uterine atony**.
- **Uterine fundal massage** is the **first-line intervention** to encourage uterine contraction and reduce bleeding by expelling clots and compressing vessels.
*Intramuscular carboprost*
- **Carboprost** is a **prostaglandin F2 alpha analog** used to treat **uterine atony** when initial measures like uterine massage and oxytocin are insufficient.
- It is contraindicated in patients with **asthma** due to its bronchoconstrictive effects, which this patient has.
*Manual exploration of the uterus*
- **Manual exploration of the uterus** is indicated when there is suspicion of **retained placental fragments** or **uterine rupture**.
- While these can cause postpartum hemorrhage, the primary finding of a soft, boggy uterus points more strongly to atony, making massage the immediate priority.
*Discontinuing oxytocin*
- The patient is already on an **intravenous oxytocin infusion**, which is a uterotonic agent used to prevent and treat uterine atony.
- Discontinuing it would worsen **uterine atony** and increase blood loss, directly contradicting the goal of management.
*Intravenous methylergonovine*
- **Methylergonovine** is an **ergot alkaloid** used to treat **uterine atony**, but it is contraindicated in patients with **hypertension**, which is not explicitly present here, but it is a potent vasoconstrictor and second-line.
- It is often used as a **second-line agent** if oxytocin and massage are ineffective and there are no contraindications.
Prevention of postpartum hemorrhage US Medical PG Question 6: A 37-year-old woman, gravida 4, para 3, at 35 weeks' gestation is admitted to the hospital in active labor. Her three children were delivered by Cesarean section. One hour after vaginal delivery, the placenta is not delivered. Manual separation of the placenta leads to profuse vaginal bleeding. Her pulse is 122/min and blood pressure is 90/67 mm Hg. A firm, nontender uterine fundus is palpated at the level of the umbilicus. Hemoglobin is 8.3 g/dL and platelet count is 220,000/mm3. Activated partial thromboplastin time and prothrombin time are within normal limits. Which of the following is the most likely underlying mechanism of this patient's postpartum bleeding?
- A. Defective decidual layer of the placenta (Correct Answer)
- B. Impaired uterine contractions
- C. Rupture of the fetal vessels
- D. Consumption of intravascular clotting factors
- E. Rupture of the uterine wall
Prevention of postpartum hemorrhage Explanation: **Defective decidual layer of the placenta**
- The patient's history of three previous Cesarean sections significantly increases the risk of **placenta accreta**, where the **placenta abnormally invades the uterine wall** due to a defective decidual layer.
- The inability to deliver the placenta an hour after vaginal delivery and subsequent profuse bleeding upon manual separation are classic signs of **placenta accreta spectrum**, as the placenta is morbidly adherent.
*Impaired uterine contractions*
- This would typically present as a **boggy, soft uterus** on palpation, rather than the "firm, nontender uterine fundus" described.
- Uterine atony is the most common cause of postpartum hemorrhage, but it is ruled out by the firm fundus and lack of uterine relaxation.
*Rupture of the fetal vessels*
- This usually occurs *before* or *during* delivery, presenting as **fetal distress** or **vaginal bleeding originating from the fetus** (e.g., vasa previa), which is not the primary issue here after labor and delivery.
- The profuse bleeding is *maternal* and occurs *after* delivery due to placental adherence, not fetal vessel rupture.
*Consumption of intravascular clotting factors*
- While severe hemorrhage can eventually lead to **disseminated intravascular coagulation (DIC)** and consumption of clotting factors, the patient's normal aPTT and PT indicate that coagulopathy is not the *initial* underlying mechanism of bleeding.
- This would be a *secondary complication* rather than the primary cause of undelivered placenta and initial hemorrhage.
*Rupture of the uterine wall*
- Uterine rupture typically presents with **acute, severe abdominal pain**, **fetal distress** (if it occurs before delivery), and **loss of uterine tone or palpation of fetal parts outside the uterus**.
- Although previous C-sections increase the risk, the firm uterine fundus and the specific problem with placental non-separation point away from uterine rupture as the primary cause of hemorrhage here.
Prevention of postpartum hemorrhage US Medical PG Question 7: Five minutes after initiating a change of position and oxygen inhalation, the oxytocin infusion is discontinued. A repeat CTG that is done 10 minutes later shows recurrent variable decelerations and a total of 3 uterine contractions in 10 minutes. Which of the following is the most appropriate next step in management?
- A. Restart oxytocin infusion
- B. Emergent Cesarean section
- C. Administer terbutaline
- D. Monitor without intervention
- E. Amnioinfusion (Correct Answer)
Prevention of postpartum hemorrhage Explanation: ***Amnioinfusion***
- **Recurrent variable decelerations** persisting after discontinuing oxytocin and changing maternal position often indicate **cord compression**, which can be relieved by amnioinfusion.
- Adding fluid to the amniotic cavity **cushions the umbilical cord**, reducing compression during uterine contractions.
*Restart oxytocin infusion*
- Reinitiating oxytocin would likely **worsen the recurrent variable decelerations** by increasing uterine contraction frequency and intensity, thereby exacerbating cord compression.
- The goal is to alleviate fetal distress, not to intensify uterine activity that is already causing issues.
*Emergent Cesarean section*
- While an emergent Cesarean section is indicated for **unresolved fetal distress**, it's usually considered after less invasive measures, such as amnioinfusion, have failed.
- There is still an opportunity for a simpler intervention to resolve the issue before resorting to surgery.
*Administer terbutaline*
- Terbutaline is a **tocolytic agent** used to reduce uterine contractions, which can be helpful in cases of tachysystole or hyperstimulation.
- In this scenario, the contraction frequency is low (3 in 10 minutes), so reducing contractions is not the primary aim; rather, the focus is on resolving the cord compression causing decelerations.
*Monitor without intervention*
- **Recurrent variable decelerations** are an concerning sign of **fetal distress** and require intervention to prevent potential harm to the fetus.
- Simply monitoring without intervention would be inappropriate and could lead to worsening fetal hypoxemia and acidosis.
Prevention of postpartum hemorrhage US Medical PG Question 8: A 31-year-old G3P2 woman presents to labor and delivery triage because she has had bleeding over the last day. She is currently 5 months into her pregnancy and has had no concerns prior to this visit. She previously had a delivery through cesarean section and has otherwise had uncomplicated pregnancies. She denies fever, pain, and discomfort. On presentation, her temperature is 99.1°F (37.3°C), blood pressure is 110/70 mmHg, pulse is 81/min, and respirations are 15/min. Physical exam reveals an alert woman with slow, painless, vaginal bleeding. Which of the following risk factors are associated with the most likely cause of this patient's symptoms?
- A. Smoking
- B. Presence of uterine fibroids
- C. Early menarche
- D. Multiparity (Correct Answer)
- E. Pelvic inflammatory disease
Prevention of postpartum hemorrhage Explanation: ***Multiparity***
- The patient presents with **painless vaginal bleeding** in the second trimester, indicating **placenta previa**. Multiparity is a significant risk factor for placenta previa.
- Placenta previa is more common in women who have had multiple pregnancies due to changes in the **endometrium** and previous uterine scarring.
*Smoking*
- While smoking is a risk factor for several pregnancy complications, including **placental abruption** and **preterm birth**, it is less strongly associated with placenta previa compared to other risk factors presented.
- Smoking can affect placental development and oxygenation but is not the primary risk factor for this specific presentation.
*Presence of uterine fibroids*
- Uterine fibroids (leiomyomas) can cause **bleeding in pregnancy** but are not a primary risk factor for placenta previa.
- Fibroids can interfere with placental implantation if they are submucosal or distort the uterine cavity, but the classic presentation here points more strongly to placenta previa.
*Early menarche*
- Early menarche is not a recognized risk factor for placenta previa.
- It is more commonly associated with conditions like **endometriosis** or increased lifetime exposure to estrogen, rather than placental implantation abnormalities.
*Pelvic inflammatory disease*
- PID is a risk factor for conditions such as **ectopic pregnancy** and **infertility** due to tubal damage.
- It does not directly increase the risk of placenta previa, which is a condition related to abnormal placental implantation in the uterus.
Prevention of postpartum hemorrhage US Medical PG Question 9: A 26-year-old gravida 1 at 36 weeks gestation is brought to the emergency department by her husband complaining of contractions lasting up to 2 minutes. The contractions are mostly in the front of her abdomen and do not radiate. The frequency and intensity of contractions have not changed since the onset. The patient worries that she is in labor. The blood pressure is 125/80 mm Hg, the heart rate is 96/min, the respiratory rate is 15/min, and the temperature 36.8°C (98.2℉). The physical examination is unremarkable. The estimated fetal weight is 3200 g (6.6 lb). The fetal heart rate is 146/min. The cervix is not dilated. The vertex is at the -4 station. Which of the following would be proper short-term management of this woman?
- A. Reassurance, hydration, and ambulation (Correct Answer)
- B. Admit to the Obstetrics Department for observation
- C. Manage with terbutaline
- D. Admit to the Obstetrics Department in preparation for labor induction
- E. Perform an ultrasound examination
Prevention of postpartum hemorrhage Explanation: ***Reassurance, hydration, and ambulation***
- This patient is experiencing **Braxton-Hicks contractions**, which are irregular, do not cause cervical change, and often resolve with hydration and rest or light activity.
- Given her stable vital signs, normal fetal heart rate, and undilated cervix, these interventions are appropriate to differentiate from true labor and provide comfort.
*Admit to the Obstetrics Department for observation*
- Admission for observation is unnecessary as there are no signs of **true labor** (cervical dilation or effacement) or fetal distress.
- The contractions are described as not changing in frequency or intensity and are localized to the anterior abdomen, consistent with **false labor**.
*Manage with terbutaline*
- **Terbutaline** is a tocolytic used to stop or prevent premature labor, but this patient is at 36 weeks gestation, which is near term, and not in true labor.
- Using a tocolytic for **Braxton-Hicks contractions** is not indicated and can have adverse effects.
*Admit to the Obstetrics Department in preparation for labor induction*
- There is no indication for **labor induction** as the patient is not in active labor and has not reached her due date.
- Labor induction is reserved for medical or obstetric indications, which are not present here.
*Perform an ultrasound examination*
- An ultrasound has already provided an estimated fetal weight and the fetal heart rate is normal, suggesting no immediate need for further **ultrasound evaluation**.
- There are no clinical signs to suggest fetal distress or other complications that would warrant an **urgent ultrasound**.
Prevention of postpartum hemorrhage US Medical PG Question 10: A 31-year-old G6P6 woman with a history of fibroids gives birth to twins via vaginal delivery. Her pregnancy was uneventful, and she reported having good prenatal care. Both placentas are delivered immediately after the birth. The patient continues to bleed significantly over the next 20 minutes. Her temperature is 97.0°F (36.1°C), blood pressure is 124/84 mmHg, pulse is 95/min, respirations are 16/min, and oxygen saturation is 98% on room air. Continued vaginal bleeding is noted. Which of the following is the most appropriate initial step in management?
- A. Oxytocin
- B. Blood product transfusion
- C. Uterine artery embolization
- D. Hysterectomy
- E. Bimanual massage (Correct Answer)
Prevention of postpartum hemorrhage Explanation: ***Bimanual massage***
- The patient is experiencing **postpartum hemorrhage (PPH)**, indicated by significant bleeding post-delivery. **Uterine atony** is the most common cause of PPH, and bimanual massage helps stimulate uterine contractions to reduce bleeding.
- This is a **first-line, non-pharmacological intervention** that can be rapidly initiated to manage uterine atony.
*Oxytocin*
- While **oxytocin** is a uterotonic agent used to treat PPH, the initial step is typically **bimanual massage** to physically stimulate the uterus while preparing for medication administration.
- Oxytocin infusion would be administered concurrent with or immediately following bimanual massage, but manual compression is often initiated first.
*Blood product transfusion*
- Blood product transfusion is indicated for significant blood loss and hemodynamic instability, but it is a **supportive measure** rather than an initial intervention to stop the bleeding.
- The patient's current **blood pressure (124/84 mmHg)** and **pulse (95/min)** do not immediately suggest severe hypovolemic shock requiring immediate transfusion as the *first* step before attempting to control the source of bleeding.
*Uterine artery embolization*
- **Uterine artery embolization** is a highly invasive procedure typically reserved for cases where conservative measures, including uterotonic agents and bimanual compression, have failed to control PPH.
- It is not an appropriate initial step, as it requires specialized equipment and personnel and would delay immediate management of active bleeding.
*Hysterectomy*
- **Hysterectomy** is a last-resort intervention for intractable PPH that cannot be controlled by all other methods, including uterotonics, uterine massage, and other surgical or interventional radiology techniques.
- It is a highly invasive procedure with significant morbidity and is not considered an initial management step.
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