MedNax NNP Exam 2025–2026 Accurate Real
Exam Questions and Verified Correct Answers
Which test for fetal lung maturity demonstrates the greatest validity in the presence of
blood or meconium contaminated amniotic fluid?
Lamellar body count (LBC)
Lecithin/sphingomyelin (L/S) ratio
Phosphatidylglycerol (PG) - answer>>>Phosphatidylglycerol (PG)
Which ultrasonographic measurement maintains the closest correlation with gestational
age in the second trimester?
Biparietal diameter (BPD)
Crown-rump length
Head circumference - answer>>>Biparietal diameter (BPD)
Which of the following ultrasound biometrics is the best single predictor of fetal growth
aberrations?
Abdominal circumference
Femur length
Estraocular and transcerebellar diameters - answer>>>Abdominal circumference
The abdominal circumference, measured along the outer margin of the abdominal skin
line at the level of the gastric bubble and the intrahepatic portion of the umbilical vein at
the bifurcation of the portal veins, is the best single predictor of growth aberrations but is
less helpful for
dating. Femur length and extraocular and transcerebellar diameters commonly used
dating parameters.
Amniocentesis is ideally performed at:
11-14 weeks gestation
15-22 weeks gestation
1|Page
,23-26 weeks gestation - answer>>>15-22 weeks gestation
Amniocentesis results reveal an elevated alpha-fetoprotein (AFP) level. This may be
associated with:
Neural tube defect
Trisomy 18
Trisomy 21 - answer>>>Neural tube defect
A component of a traditional biophysical profile (BPP) is:
Fetal breathing
Fetal heart rate
Placental grading - answer>>>Fetal breathing
Which of the following findings would improve diagnostic accuracy of imminent delivery
for a woman in preterm labor?
Cervical length of 30 mm measured by transabdominal ultrasound
Effacement of less than 80%
Presence of fetal fibronectin in cervicovaginal fluid - answer>>>Presence of fetal
fibronectin in cervicovaginal fluid
Most cases of human immunodeficiency virus (HIV) transmission from the mother to the
infant occur:
Antenatally as a result of invasive procedures
At the time of delivery
Postnatally from breastfeeding - answer>>>At the time of delivery
Most cases of transmission occur at the time of delivery. Antenatal transmission is
possible, typically as a result of invasive antepartum procedures such as amniocentesis or
chorionic villus sampling. Postnatal transmission also can occur from breastfeeding.
Of those listed below, which medication used in the management of maternal
cardiovascular disease has harmful effects on the developing fetus?
Beta-Blockers
2|Page
,Heparin
Warfarin - answer>>>Warfarin
The primary response to fetal hypoxemia is:
Bradycardia
Tachycardia
Variable decelerations - answer>>>Tachycardia
Decreased placental perfusion during uterine contractions is associated with:
Early decelerations
Late decelerations
Variable decelerations - answer>>>Late decelerations
Early decelerations in the fetal heart rate during continuous monitoring are indicative of:
Fetal hypoxemia
Increased systemic vascular resistance
Transient increases in fetal intracranial pressure - answer>>>Transient increases in fetal
intracranial pressure
Which of the following complications have been reported in infants with prenatal
exposure to indomethacin?
Intrauterine growth retardation (IUGR)
Necrotizing enterocolitis (NEC)
Supraventricular tachycardia (SVT) - answer>>>Necrotizing enterocolitis (NEC)
Which of the following treatments have been shown to reduce risk for preterm birth,
small for gestational age infants, and fetal or neonatal deaths?
Antioxidant vitamins C and E
Low dose aspirin
Supplemental calcium - answer>>>Low dose aspirin
Which one of the following fetal conditions occurs most frequently in diabetic women
with vasculopathy?
3|Page
, Asymmetric intrauterine growth restriction (IUGR)
Fetal demise
Macrosomia - answer>>>Asymmetric intrauterine growth restriction (IUGR)
The underlying pathophysiology for the majority of women who develop gestational
diabetes is:
Antibodies directed aginst specific beta cell antigens
Genetic variants that have been identified as causes of diabetes in the general population
Significant decreases in insulin sensitivity with advancing gestation -
answer>>>Significant decreases in insulin sensitivity with advancing gestation
Which of the following complications has been reported in infants exposed to ACE
Inhibitors and angiotensin receptor blockers prenatally?
Hypoglycemia
Necrotizing enterocolitis (NEC)
Renal failure - answer>>>Renal failure
Maternal cardiac disease is most likely to have which of the following effects on the
fetus?
Hydrops
Intrauterine growth restriction (IUGR)
Intraventricular hemorrhage - answer>>>Intrauterine growth restriction (IUGR)
The most commonly heard continuous murmur in the newborn is associated with:
Patent ductus arteriosus (PDA)
Patent foramen ovale (PFO)
Pulmonary artery stenosis (PAS) - answer>>>Patent ductus arteriosus (PDA)
Patent ductus arteriosus (PDA) murmurs are auscultated best at the:
Lower left sternal border
Upper left sternal border
Upper right sternal border - answer>>>Upper left sternal border
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Exam Questions and Verified Correct Answers
Which test for fetal lung maturity demonstrates the greatest validity in the presence of
blood or meconium contaminated amniotic fluid?
Lamellar body count (LBC)
Lecithin/sphingomyelin (L/S) ratio
Phosphatidylglycerol (PG) - answer>>>Phosphatidylglycerol (PG)
Which ultrasonographic measurement maintains the closest correlation with gestational
age in the second trimester?
Biparietal diameter (BPD)
Crown-rump length
Head circumference - answer>>>Biparietal diameter (BPD)
Which of the following ultrasound biometrics is the best single predictor of fetal growth
aberrations?
Abdominal circumference
Femur length
Estraocular and transcerebellar diameters - answer>>>Abdominal circumference
The abdominal circumference, measured along the outer margin of the abdominal skin
line at the level of the gastric bubble and the intrahepatic portion of the umbilical vein at
the bifurcation of the portal veins, is the best single predictor of growth aberrations but is
less helpful for
dating. Femur length and extraocular and transcerebellar diameters commonly used
dating parameters.
Amniocentesis is ideally performed at:
11-14 weeks gestation
15-22 weeks gestation
1|Page
,23-26 weeks gestation - answer>>>15-22 weeks gestation
Amniocentesis results reveal an elevated alpha-fetoprotein (AFP) level. This may be
associated with:
Neural tube defect
Trisomy 18
Trisomy 21 - answer>>>Neural tube defect
A component of a traditional biophysical profile (BPP) is:
Fetal breathing
Fetal heart rate
Placental grading - answer>>>Fetal breathing
Which of the following findings would improve diagnostic accuracy of imminent delivery
for a woman in preterm labor?
Cervical length of 30 mm measured by transabdominal ultrasound
Effacement of less than 80%
Presence of fetal fibronectin in cervicovaginal fluid - answer>>>Presence of fetal
fibronectin in cervicovaginal fluid
Most cases of human immunodeficiency virus (HIV) transmission from the mother to the
infant occur:
Antenatally as a result of invasive procedures
At the time of delivery
Postnatally from breastfeeding - answer>>>At the time of delivery
Most cases of transmission occur at the time of delivery. Antenatal transmission is
possible, typically as a result of invasive antepartum procedures such as amniocentesis or
chorionic villus sampling. Postnatal transmission also can occur from breastfeeding.
Of those listed below, which medication used in the management of maternal
cardiovascular disease has harmful effects on the developing fetus?
Beta-Blockers
2|Page
,Heparin
Warfarin - answer>>>Warfarin
The primary response to fetal hypoxemia is:
Bradycardia
Tachycardia
Variable decelerations - answer>>>Tachycardia
Decreased placental perfusion during uterine contractions is associated with:
Early decelerations
Late decelerations
Variable decelerations - answer>>>Late decelerations
Early decelerations in the fetal heart rate during continuous monitoring are indicative of:
Fetal hypoxemia
Increased systemic vascular resistance
Transient increases in fetal intracranial pressure - answer>>>Transient increases in fetal
intracranial pressure
Which of the following complications have been reported in infants with prenatal
exposure to indomethacin?
Intrauterine growth retardation (IUGR)
Necrotizing enterocolitis (NEC)
Supraventricular tachycardia (SVT) - answer>>>Necrotizing enterocolitis (NEC)
Which of the following treatments have been shown to reduce risk for preterm birth,
small for gestational age infants, and fetal or neonatal deaths?
Antioxidant vitamins C and E
Low dose aspirin
Supplemental calcium - answer>>>Low dose aspirin
Which one of the following fetal conditions occurs most frequently in diabetic women
with vasculopathy?
3|Page
, Asymmetric intrauterine growth restriction (IUGR)
Fetal demise
Macrosomia - answer>>>Asymmetric intrauterine growth restriction (IUGR)
The underlying pathophysiology for the majority of women who develop gestational
diabetes is:
Antibodies directed aginst specific beta cell antigens
Genetic variants that have been identified as causes of diabetes in the general population
Significant decreases in insulin sensitivity with advancing gestation -
answer>>>Significant decreases in insulin sensitivity with advancing gestation
Which of the following complications has been reported in infants exposed to ACE
Inhibitors and angiotensin receptor blockers prenatally?
Hypoglycemia
Necrotizing enterocolitis (NEC)
Renal failure - answer>>>Renal failure
Maternal cardiac disease is most likely to have which of the following effects on the
fetus?
Hydrops
Intrauterine growth restriction (IUGR)
Intraventricular hemorrhage - answer>>>Intrauterine growth restriction (IUGR)
The most commonly heard continuous murmur in the newborn is associated with:
Patent ductus arteriosus (PDA)
Patent foramen ovale (PFO)
Pulmonary artery stenosis (PAS) - answer>>>Patent ductus arteriosus (PDA)
Patent ductus arteriosus (PDA) murmurs are auscultated best at the:
Lower left sternal border
Upper left sternal border
Upper right sternal border - answer>>>Upper left sternal border
4|Page
