"NUR 410: EXIT-NCLEX Obstetric Nursing Exam Prep 2026 |
Comprehensive Study Guide & Practice Questions with
Detailed Rationales"
Course Code: NUR 410
Course Name: Advanced Family Medicine and Perinatal Therapeutics
Topic: Comprehensive Comprehensive Maternal-Neonatal Pathophysiology, High-Yield Priority
Operations, and Clinical Dosage Calculations
Academic Year: 2026/2027
1. A multigravida client at 34 weeks gestation with severe preeclampsia is undergoing a
continuous maintenance infusion of magnesium sulfate at 2 g/hour. The nurse’s hourly
assessment reveals an absolute absence of patellar deep tendon reflexes (DTRs), a respiratory
rate of 9 breaths per minute, and a urine output of 15 mL over the past hour. Which multi-step
intervention must the nurse execute immediately to guarantee client safety?
A. Increase the magnesium sulfate infusion to 4 g/hour to treat worsening renal perfusion and
prevent eclamptic seizures.
B. Immediately halt the magnesium sulfate infusion, apply supplemental oxygen via a non-
rebreather mask at 10 L/minute, and administer intravenous calcium gluconate 1 g slowly
over 5 to 10 minutes.
C. Position the client flat in a supine frame, perform a STAT digital vaginal exam to assess
cervical dilation, and draw a serum magnesium clearance profile.
D. Maintain the current infusion rate, encourage oral fluid intake, and request a repeat
laboratory assessment of liver enzymes to rule out HELLP syndrome.
CORRECT ANSWER: B
RATIONALE: The client is displaying classic, life-threatening signs of magnesium sulfate toxicity (loss
of deep tendon reflexes, severe bradypnea, and profound oliguria indicating systemic accumulation).
The immediate priority is to stop the magnesium sulfate infusion to prevent cardiac arrest and
administer the specific chemical antidote, calcium gluconate (1 g IV slow push). Applying supplemental
high-flow oxygen addresses respiratory depression. Increasing the dose or keeping the client supine is
contraindicated and fatal, while drawing labs without turning off the toxic infusion delays emergency
resuscitation.
2. A multiparous client at 39 weeks gestation is admitted in active labor. After 8 hours of
progressive contractions, she experiences a sudden gush of dark red vaginal bleeding, agonizing,
continuous abdominal pain, and a rapidly developing rigid, board-like abdomen. The fetal
monitoring strip reveals severe, recurring late decelerations. Which pathological condition
should the nurse identify, and what is the required operational management?
A. Placenta previa; implement strict bed rest, maintain pelvic rest, and schedule a routine
, ultrasound.
B. Uterine atony; initiate a continuous oxytocin infusion and perform intense bimanual fundal
massage.
C. Abruptio placentae; activate the emergency surgical team for an immediate cesarean
delivery and prepare for blood transfusions.
D. Cervicitis with show; encourage ambulation, provide therapeutic hydrotherapy, and
administer a tocolytic agent.
CORRECT ANSWER: C
RATIONALE: The combination of dark red vaginal bleeding, continuous severe abdominal pain, and
a rigid, board-like uterus is the classic diagnostic triad for abruptio placentae (premature detachment
of the placenta from the uterine wall). This constitutes an extreme medical emergency due to the risk of
maternal hemorrhage and fetal asphyxia, requiring immediate cesarean delivery and blood product
preparation. Placenta previa presents with painless bright red bleeding and a soft, non-tender uterus.
Uterine atony is a postpartum complication, not an intrapartum condition.
3. A postpartum client weighing 154 lbs is experiencing severe, intractable uterine atony and
hemorrhage 30 minutes following the delivery of a macrosomic infant. The healthcare provider
prescribes carboprost tromethamine (Hemabate) 0.25 mg intramuscularly STAT. The available
vial is labeled Carboprost 250 mcg/mL. Which mechanical health history parameter must the
nurse verify before injecting this medication, and how many milliliters (mL) should be drawn up?
A. Verify the absence of asthma; administer 1.0 mL of the medication.
B. Verify the absence of hypertension; administer 0.5 mL of the medication.
C. Verify the absence of active peptic ulcer disease; administer 2.5 mL of the medication.
D. Verify the absence of glaucoma; administer 0.25 mL of the medication.
CORRECT ANSWER: A
RATIONALE: Carboprost tromethamine (Hemabate) is a potent uterotonic prostaglandin that causes
intense smooth muscle contraction. It is strictly contraindicated in clients with a history of asthma
because it can induce severe, life-threatening bronchospasm. To calculate the dosage: 1 mg = 1,000
mcg, therefore 0.25 mg is exactly equal to 250 mcg. Since the available vial is concentrated at 250
mcg/mL, the nurse must administer 1.0 mL intramuscularly. Methylergonovine (Methergine) is the
agent contraindicated in hypertension, not carboprost.
4. A nurse in a rural family medicine clinic is preparing to administer vitamin K (phytonadione) 1
mg intramuscularly to a stable newborn infant 1 hour after birth. The available neonatal single-
dose ampule contains Vitamin K 2 mg/mL. What is the correct volume to administer, and which
anatomical site must the nurse utilize to guarantee safe delivery?
A. Administer 1.0 mL within the deltoid muscle matrix of the upper arm.
B. Administer 0.5 mL within the anterolateral aspect of the middle third of the vastus lateralis
thigh muscle.
C. Administer 2.0 mL within the gluteus maximus muscle using a 1-inch needle.
D. Administer 0.5 mL via a subcutaneous injection directly into the umbilical periumbilical
tissues.
, CORRECT ANSWER: B
RATIONALE: To deliver the prescribed dose of 1 mg from a 2 mg/mL solution, the calculation is: 1 mg
÷ 2 mg/mL = 0.5 mL. The universally mandated anatomical site for intramuscular injections in newborns
is the anterolateral aspect of the middle third of the vastus lateralis (thigh) muscle due to its relative
mass and safety from major vascular structures. The deltoid or gluteal muscles are insufficiently
developed in neonates, and vitamin K must be given IM rather than subcutaneously to stimulate clotting
factor synthesis effectively.
5. A hospitalized pregnant client at 29 weeks gestation is diagnosed with a severe, acute
exacerbation of hyperemesis gravidarum (HG) characterized by an 8% loss of her pre-pregnancy
body weight, persistent ketonuria, and extreme dehydration. The provider prescribes an
immediate intravenous fluid bolus of 5% Dextrose in Lactated Ringer's to run at 150 mL/hour for
the first 4 hours, followed by a maintenance rate. What is the total volume of fluid the client
will receive during this initial 4-hour window, and which first-line medication combination
should the nurse anticipate administering?
A. 450 mL; Oral methotrexate combined with misoprostol.
B. 600 mL; Intravenous Vitamin B6 (pyridoxine) combined with doxylamine.
C. 1,200 mL; Intramuscular methylergonovine combined with terbutaline.
D. 600 mL; Intrathecal ampicillin combined with continuous magnesium infusions.
CORRECT ANSWER: B
RATIONALE: The total fluid volume delivered over 4 hours at a rate of 150 mL/hour is calculated as:
150 mL/hour × 4 hours = 600 mL. For the management of hyperemesis gravidarum (HG), standard
evidence-based guidelines establish Vitamin B6 (pyridoxine) combined with doxylamine as the first-
line medication regimen to safely control intractable nausea and vomiting. Methotrexate and
misoprostol are utilized for pregnancy termination, not HG management.
6. The nurse is maintaining a continuous intravenous oxytocin (Pitocin) infusion for induction of
labor in a primigravida client at 39 weeks gestation. The electronic fetal monitor suddenly
reveals a pattern of Variable Decelerations that resemble a sharp "V" shape, dropping 40 beats
below the baseline for 20 seconds. The nurse applies the "ROADI" framework to manage this
intrauterine event. What is the underlying cause of this pattern, and what are the correct
immediate actions?
A. Head compression; immediately perform a digital exam to verify complete cervical
effacement.
B. Cord compression; reposition the client to her left lateral side, stop the oxytocin infusion,
and increase mainline IV fluids.
C. Uteroplacental insufficiency; apply a low-pressure abdominal binder and administer a bolus of
D5W.
D. Fetal sleep cycle; stimulate the maternal abdomen manually and increase the oxytocin flow
rate.
CORRECT ANSWER: B
RATIONALE: According to the classic "VEAL CHOP" mnemonic, Variable decelerations are caused
directly by umbilical cord compression. To manage this, the nurse executes the "ROADI" protocol:
Comprehensive Study Guide & Practice Questions with
Detailed Rationales"
Course Code: NUR 410
Course Name: Advanced Family Medicine and Perinatal Therapeutics
Topic: Comprehensive Comprehensive Maternal-Neonatal Pathophysiology, High-Yield Priority
Operations, and Clinical Dosage Calculations
Academic Year: 2026/2027
1. A multigravida client at 34 weeks gestation with severe preeclampsia is undergoing a
continuous maintenance infusion of magnesium sulfate at 2 g/hour. The nurse’s hourly
assessment reveals an absolute absence of patellar deep tendon reflexes (DTRs), a respiratory
rate of 9 breaths per minute, and a urine output of 15 mL over the past hour. Which multi-step
intervention must the nurse execute immediately to guarantee client safety?
A. Increase the magnesium sulfate infusion to 4 g/hour to treat worsening renal perfusion and
prevent eclamptic seizures.
B. Immediately halt the magnesium sulfate infusion, apply supplemental oxygen via a non-
rebreather mask at 10 L/minute, and administer intravenous calcium gluconate 1 g slowly
over 5 to 10 minutes.
C. Position the client flat in a supine frame, perform a STAT digital vaginal exam to assess
cervical dilation, and draw a serum magnesium clearance profile.
D. Maintain the current infusion rate, encourage oral fluid intake, and request a repeat
laboratory assessment of liver enzymes to rule out HELLP syndrome.
CORRECT ANSWER: B
RATIONALE: The client is displaying classic, life-threatening signs of magnesium sulfate toxicity (loss
of deep tendon reflexes, severe bradypnea, and profound oliguria indicating systemic accumulation).
The immediate priority is to stop the magnesium sulfate infusion to prevent cardiac arrest and
administer the specific chemical antidote, calcium gluconate (1 g IV slow push). Applying supplemental
high-flow oxygen addresses respiratory depression. Increasing the dose or keeping the client supine is
contraindicated and fatal, while drawing labs without turning off the toxic infusion delays emergency
resuscitation.
2. A multiparous client at 39 weeks gestation is admitted in active labor. After 8 hours of
progressive contractions, she experiences a sudden gush of dark red vaginal bleeding, agonizing,
continuous abdominal pain, and a rapidly developing rigid, board-like abdomen. The fetal
monitoring strip reveals severe, recurring late decelerations. Which pathological condition
should the nurse identify, and what is the required operational management?
A. Placenta previa; implement strict bed rest, maintain pelvic rest, and schedule a routine
, ultrasound.
B. Uterine atony; initiate a continuous oxytocin infusion and perform intense bimanual fundal
massage.
C. Abruptio placentae; activate the emergency surgical team for an immediate cesarean
delivery and prepare for blood transfusions.
D. Cervicitis with show; encourage ambulation, provide therapeutic hydrotherapy, and
administer a tocolytic agent.
CORRECT ANSWER: C
RATIONALE: The combination of dark red vaginal bleeding, continuous severe abdominal pain, and
a rigid, board-like uterus is the classic diagnostic triad for abruptio placentae (premature detachment
of the placenta from the uterine wall). This constitutes an extreme medical emergency due to the risk of
maternal hemorrhage and fetal asphyxia, requiring immediate cesarean delivery and blood product
preparation. Placenta previa presents with painless bright red bleeding and a soft, non-tender uterus.
Uterine atony is a postpartum complication, not an intrapartum condition.
3. A postpartum client weighing 154 lbs is experiencing severe, intractable uterine atony and
hemorrhage 30 minutes following the delivery of a macrosomic infant. The healthcare provider
prescribes carboprost tromethamine (Hemabate) 0.25 mg intramuscularly STAT. The available
vial is labeled Carboprost 250 mcg/mL. Which mechanical health history parameter must the
nurse verify before injecting this medication, and how many milliliters (mL) should be drawn up?
A. Verify the absence of asthma; administer 1.0 mL of the medication.
B. Verify the absence of hypertension; administer 0.5 mL of the medication.
C. Verify the absence of active peptic ulcer disease; administer 2.5 mL of the medication.
D. Verify the absence of glaucoma; administer 0.25 mL of the medication.
CORRECT ANSWER: A
RATIONALE: Carboprost tromethamine (Hemabate) is a potent uterotonic prostaglandin that causes
intense smooth muscle contraction. It is strictly contraindicated in clients with a history of asthma
because it can induce severe, life-threatening bronchospasm. To calculate the dosage: 1 mg = 1,000
mcg, therefore 0.25 mg is exactly equal to 250 mcg. Since the available vial is concentrated at 250
mcg/mL, the nurse must administer 1.0 mL intramuscularly. Methylergonovine (Methergine) is the
agent contraindicated in hypertension, not carboprost.
4. A nurse in a rural family medicine clinic is preparing to administer vitamin K (phytonadione) 1
mg intramuscularly to a stable newborn infant 1 hour after birth. The available neonatal single-
dose ampule contains Vitamin K 2 mg/mL. What is the correct volume to administer, and which
anatomical site must the nurse utilize to guarantee safe delivery?
A. Administer 1.0 mL within the deltoid muscle matrix of the upper arm.
B. Administer 0.5 mL within the anterolateral aspect of the middle third of the vastus lateralis
thigh muscle.
C. Administer 2.0 mL within the gluteus maximus muscle using a 1-inch needle.
D. Administer 0.5 mL via a subcutaneous injection directly into the umbilical periumbilical
tissues.
, CORRECT ANSWER: B
RATIONALE: To deliver the prescribed dose of 1 mg from a 2 mg/mL solution, the calculation is: 1 mg
÷ 2 mg/mL = 0.5 mL. The universally mandated anatomical site for intramuscular injections in newborns
is the anterolateral aspect of the middle third of the vastus lateralis (thigh) muscle due to its relative
mass and safety from major vascular structures. The deltoid or gluteal muscles are insufficiently
developed in neonates, and vitamin K must be given IM rather than subcutaneously to stimulate clotting
factor synthesis effectively.
5. A hospitalized pregnant client at 29 weeks gestation is diagnosed with a severe, acute
exacerbation of hyperemesis gravidarum (HG) characterized by an 8% loss of her pre-pregnancy
body weight, persistent ketonuria, and extreme dehydration. The provider prescribes an
immediate intravenous fluid bolus of 5% Dextrose in Lactated Ringer's to run at 150 mL/hour for
the first 4 hours, followed by a maintenance rate. What is the total volume of fluid the client
will receive during this initial 4-hour window, and which first-line medication combination
should the nurse anticipate administering?
A. 450 mL; Oral methotrexate combined with misoprostol.
B. 600 mL; Intravenous Vitamin B6 (pyridoxine) combined with doxylamine.
C. 1,200 mL; Intramuscular methylergonovine combined with terbutaline.
D. 600 mL; Intrathecal ampicillin combined with continuous magnesium infusions.
CORRECT ANSWER: B
RATIONALE: The total fluid volume delivered over 4 hours at a rate of 150 mL/hour is calculated as:
150 mL/hour × 4 hours = 600 mL. For the management of hyperemesis gravidarum (HG), standard
evidence-based guidelines establish Vitamin B6 (pyridoxine) combined with doxylamine as the first-
line medication regimen to safely control intractable nausea and vomiting. Methotrexate and
misoprostol are utilized for pregnancy termination, not HG management.
6. The nurse is maintaining a continuous intravenous oxytocin (Pitocin) infusion for induction of
labor in a primigravida client at 39 weeks gestation. The electronic fetal monitor suddenly
reveals a pattern of Variable Decelerations that resemble a sharp "V" shape, dropping 40 beats
below the baseline for 20 seconds. The nurse applies the "ROADI" framework to manage this
intrauterine event. What is the underlying cause of this pattern, and what are the correct
immediate actions?
A. Head compression; immediately perform a digital exam to verify complete cervical
effacement.
B. Cord compression; reposition the client to her left lateral side, stop the oxytocin infusion,
and increase mainline IV fluids.
C. Uteroplacental insufficiency; apply a low-pressure abdominal binder and administer a bolus of
D5W.
D. Fetal sleep cycle; stimulate the maternal abdomen manually and increase the oxytocin flow
rate.
CORRECT ANSWER: B
RATIONALE: According to the classic "VEAL CHOP" mnemonic, Variable decelerations are caused
directly by umbilical cord compression. To manage this, the nurse executes the "ROADI" protocol:
