Maternal Newborn Nursing Certification
(RNC-MNN) TEST BANK Comprehensive
Mock Exam Bank
Question 1
A 26-year-old G1P1 is evaluated 8 hours after an uncomplicated vaginal delivery of a
3,800g infant. The nurse notes the patient’s fundus is firm, deviated to the right side,
and located 2 centimeters above the umbilicus. The patient denies pain but states she
has been unable to void since delivery. Which of the following is the most appropriate
initial nursing intervention?
A. Administer 20 units of intramuscular oxytocin immediately.
B. Perform aggressive fundal massage for 5 consecutive minutes.
C. Assist the patient to the bathroom to attempt voiding.
D. Place an indwelling Foley catheter to drain the bladder completely.
, Correct Answer: C
Rationale: A postpartum fundus that is firm but displaced to the right and elevated
above the umbilicus is a classic clinical indicator of uterine displacement due to a
distended bladder. The initial action should always be non-invasive assistance to
facilitate spontaneous voiding. Catheterization is reserved for cases where the patient
cannot void spontaneously after multiple non-invasive attempts. Fundal massage is
inappropriate because the fundus is already firm, and oxytocin is not indicated as there
is no uterine atony.
Question 2
During a routine assessment of a patient 24 hours postpartum, the nurse records a
maternal heart rate of 52 beats per minute, a blood pressure of 114/72 mmHg, and an
oral temperature of 37.6°C (99.7°F). The patient reports feeling tired but otherwise
asymptomatic. How should the nurse interpret these vital signs?
A. Normal physiological puerperal bradycardia and expected low-grade temperature.
B. Early signs of hypovolemic shock requiring an immediate intravenous fluid bolus.
C. Incipient postpartum infection requiring broad-spectrum antibiotic initiation.
D. Autonomic dysreflexia related to unresolved epidural anesthesia effects.
Correct Answer: A
Rationale: In the first 24–48 hours postpartum, physiological bradycardia (heart rates
ranging between 40 and 60 bpm) is a normal phenomenon caused by the sudden
increase in central blood volume (autotransfusion) following placental separation and
the reduction of the low-resistance uteroplacental vascular bed. A temperature up to
38°C (100.4°F) is also common during the first 24 hours due to dehydration and the
physical stress of labor. No emergency interventions are warranted.
Question 3
A postpartum patient who underwent an emergency cesarean birth under general
anesthesia 12 hours ago reports sudden, sharp chest pain that worsens with deep
inspiration, accompanied by mild dyspnea. Her oxygen saturation is 91% on room air,
and her respiratory rate is 26 breaths per minute. Which complication should the nurse
suspect first?
, A. Endometritis with systemic inflammatory response syndrome.
B. Postpartum pulmonary embolism.
C. Diaphragmatic irritation secondary to trapped intra-abdominal carbon dioxide.
D. Delayed respiratory depression from intrathecal morphine.
Correct Answer: B
Rationale: Postpartum patients are in a hypercoagulable state due to elevations in
clotting factors and decreased fibrinolytic activity designed to protect against
hemorrhage. Cesarean birth and general anesthesia significantly increase the risk of
deep vein thrombosis (DVT) and subsequent pulmonary embolism (PE). Pleuritic chest
pain, tachypnea, and hypoxia are classic signs of PE and require immediate medical
evaluation, oxygen administration, and diagnostic imaging.
👶 Section 2: Newborn Assessment & Transition
Question 4
A male infant is delivered vaginally at 39 weeks’ gestation. At 1 minute of life, the infant
exhibits a weak, irregular cry, a heart rate of 104 beats per minute, some flexion of the
extremities, grimacing when his feet are slapped, and a pink body with blue hands and
feet. What is the calculated 1-minute Apgar score for this newborn?
A. 5
B. 6
C. 7
D. 8
Correct Answer: B
, Rationale: The Apgar scoring breakdown is as follows: Heart rate >100 bpm = 2 points;
Respiratory effort (weak, irregular cry) = 1 point; Muscle tone (some flexion) = 1 point;
Reflex irritability (grimace only) = 1 point; Color (pink body, blue extremities /
acrocyanosis) = 1 point. Adding these components together yields a total score of 6 (2 +
1 + 1 + 1 + 1).
Question 5
While performing a physical examination on a 12-hour-old infant born at 41 weeks’
gestation, the nurse identifies a well-demarcated area of swelling over the right parietal
bone that does not cross the sagittal or coronal suture lines. The mother asks if this
swelling will cause brain damage. Which response by the nurse is most accurate?
A. "This is a cephalohematoma caused by bleeding under the bone's covering. It does
not affect the brain and usually resolves on its own over several weeks."
B. "This is caput succedaneum, which is a collection of fluid under the skin. It will likely
cross over the other side of the skull and disappear by tomorrow."
C. "This represents an intracranial hemorrhage that requires immediate transfer to the
neonatal intensive care unit for surgical drainage."
D. "This swelling is an encephalocele, which is a structural defect where brain tissue
protrudes through the skull plates."
Correct Answer: A
Rationale: A cephalohematoma is a collection of blood between the skull bone and its
periosteum, caused by ruptured blood vessels during labor or delivery. Because it is
bounded by the periosteum, it is strictly confined to a single bone and does not cross
suture lines. It does not involve the brain tissue underneath. In contrast, caput
succedaneum is a collection of edematous fluid above the periosteum that crosses
suture lines and resolves within a few days.
Question 6
A newborn infant born at 36 weeks’ gestation is noted to have a respiratory rate of 72
breaths per minute, persistent expiratory grunting, audible intercostal retractions, and
nasal flaring at 30 minutes of life. What is the primary underlying pathophysiology
responsible for these clinical signs?
(RNC-MNN) TEST BANK Comprehensive
Mock Exam Bank
Question 1
A 26-year-old G1P1 is evaluated 8 hours after an uncomplicated vaginal delivery of a
3,800g infant. The nurse notes the patient’s fundus is firm, deviated to the right side,
and located 2 centimeters above the umbilicus. The patient denies pain but states she
has been unable to void since delivery. Which of the following is the most appropriate
initial nursing intervention?
A. Administer 20 units of intramuscular oxytocin immediately.
B. Perform aggressive fundal massage for 5 consecutive minutes.
C. Assist the patient to the bathroom to attempt voiding.
D. Place an indwelling Foley catheter to drain the bladder completely.
, Correct Answer: C
Rationale: A postpartum fundus that is firm but displaced to the right and elevated
above the umbilicus is a classic clinical indicator of uterine displacement due to a
distended bladder. The initial action should always be non-invasive assistance to
facilitate spontaneous voiding. Catheterization is reserved for cases where the patient
cannot void spontaneously after multiple non-invasive attempts. Fundal massage is
inappropriate because the fundus is already firm, and oxytocin is not indicated as there
is no uterine atony.
Question 2
During a routine assessment of a patient 24 hours postpartum, the nurse records a
maternal heart rate of 52 beats per minute, a blood pressure of 114/72 mmHg, and an
oral temperature of 37.6°C (99.7°F). The patient reports feeling tired but otherwise
asymptomatic. How should the nurse interpret these vital signs?
A. Normal physiological puerperal bradycardia and expected low-grade temperature.
B. Early signs of hypovolemic shock requiring an immediate intravenous fluid bolus.
C. Incipient postpartum infection requiring broad-spectrum antibiotic initiation.
D. Autonomic dysreflexia related to unresolved epidural anesthesia effects.
Correct Answer: A
Rationale: In the first 24–48 hours postpartum, physiological bradycardia (heart rates
ranging between 40 and 60 bpm) is a normal phenomenon caused by the sudden
increase in central blood volume (autotransfusion) following placental separation and
the reduction of the low-resistance uteroplacental vascular bed. A temperature up to
38°C (100.4°F) is also common during the first 24 hours due to dehydration and the
physical stress of labor. No emergency interventions are warranted.
Question 3
A postpartum patient who underwent an emergency cesarean birth under general
anesthesia 12 hours ago reports sudden, sharp chest pain that worsens with deep
inspiration, accompanied by mild dyspnea. Her oxygen saturation is 91% on room air,
and her respiratory rate is 26 breaths per minute. Which complication should the nurse
suspect first?
, A. Endometritis with systemic inflammatory response syndrome.
B. Postpartum pulmonary embolism.
C. Diaphragmatic irritation secondary to trapped intra-abdominal carbon dioxide.
D. Delayed respiratory depression from intrathecal morphine.
Correct Answer: B
Rationale: Postpartum patients are in a hypercoagulable state due to elevations in
clotting factors and decreased fibrinolytic activity designed to protect against
hemorrhage. Cesarean birth and general anesthesia significantly increase the risk of
deep vein thrombosis (DVT) and subsequent pulmonary embolism (PE). Pleuritic chest
pain, tachypnea, and hypoxia are classic signs of PE and require immediate medical
evaluation, oxygen administration, and diagnostic imaging.
👶 Section 2: Newborn Assessment & Transition
Question 4
A male infant is delivered vaginally at 39 weeks’ gestation. At 1 minute of life, the infant
exhibits a weak, irregular cry, a heart rate of 104 beats per minute, some flexion of the
extremities, grimacing when his feet are slapped, and a pink body with blue hands and
feet. What is the calculated 1-minute Apgar score for this newborn?
A. 5
B. 6
C. 7
D. 8
Correct Answer: B
, Rationale: The Apgar scoring breakdown is as follows: Heart rate >100 bpm = 2 points;
Respiratory effort (weak, irregular cry) = 1 point; Muscle tone (some flexion) = 1 point;
Reflex irritability (grimace only) = 1 point; Color (pink body, blue extremities /
acrocyanosis) = 1 point. Adding these components together yields a total score of 6 (2 +
1 + 1 + 1 + 1).
Question 5
While performing a physical examination on a 12-hour-old infant born at 41 weeks’
gestation, the nurse identifies a well-demarcated area of swelling over the right parietal
bone that does not cross the sagittal or coronal suture lines. The mother asks if this
swelling will cause brain damage. Which response by the nurse is most accurate?
A. "This is a cephalohematoma caused by bleeding under the bone's covering. It does
not affect the brain and usually resolves on its own over several weeks."
B. "This is caput succedaneum, which is a collection of fluid under the skin. It will likely
cross over the other side of the skull and disappear by tomorrow."
C. "This represents an intracranial hemorrhage that requires immediate transfer to the
neonatal intensive care unit for surgical drainage."
D. "This swelling is an encephalocele, which is a structural defect where brain tissue
protrudes through the skull plates."
Correct Answer: A
Rationale: A cephalohematoma is a collection of blood between the skull bone and its
periosteum, caused by ruptured blood vessels during labor or delivery. Because it is
bounded by the periosteum, it is strictly confined to a single bone and does not cross
suture lines. It does not involve the brain tissue underneath. In contrast, caput
succedaneum is a collection of edematous fluid above the periosteum that crosses
suture lines and resolves within a few days.
Question 6
A newborn infant born at 36 weeks’ gestation is noted to have a respiratory rate of 72
breaths per minute, persistent expiratory grunting, audible intercostal retractions, and
nasal flaring at 30 minutes of life. What is the primary underlying pathophysiology
responsible for these clinical signs?
