RNC-OB REAL EXAM 2025-2026 ACCURATE FALL-SPRING
SESSION ORIGINAL COMPLETE QUESTION AND ANSWER
GRADED A+ 400 QUESTIONS WITH VERIFIED RATIONALES
What is the normal contraction frequency in the active phase of
labor?-ANSWER-q 2 to 3 min
Hyperstimulation is defined as:-ANSWER-More than 5
contractions in a 10 minute period, or contractions occuring
within 1 min of each other. (Usually averaged over 30 minute
period.)
Are coupling or tripling ominous signs?-ANSWER-No. It is a
common pattern early in labor and does not usually initiate
FHR responses.
At term, how much cardiac output perfuses the uterus each
minute?-ANSWER-10% to 15% or 600 to 750 ml
1|P a g e
,Fetal deoxygenated blood is carried to the placental villi by-
ANSWER-the two umbilical arteries
How does maternal–fetal exchange of oxygen and other
nutrients occur?-ANSWER-In the intervillous space across the
membranes that separate fetal and maternal circulation.
Oxygen is exchanged through passive diffusion (high
concentration is maternal side; low concentration is fetal side)
and nutrients are exchanged by active transport, facilitated
diffusion and pinocytosis.
The significant factors (3) affecting placental exchange of gases
and nutrients for the fetus are-ANSWER-uterine blood flow,
umbilical blood flow, and the amount of placental area
available for exchange.
Why does the FHR slowly drop in normal baseline as the fetus
matures?-ANSWER-The parasympathetic nervous system
matures during the second trimester, and the vegas nerve
(which slows the HR) gradually becomes dominant over
sympathetic stimulation.
2|P a g e
,Define FHR accelerations.-ANSWER-An abrupt increase in FHR
of at least 15 beats/min above baseline and the acceleration
lasts at least 15 seconds but less than 2 minutes. ("15 by 15")
(Before 32 weeks, 10 x 10.)
Causes of sinusoidal FHR patterns include:-ANSWER-Maternal–
fetal hemorrhage, placental abruption, or severe fetal anemia,
which can be caused by Rh isoimmunization. Can occur after
administration to some narcotics especially Stadol.
Approx 50% to 60% of mothers whose fetuses exhibit
congenital heart block have evidence of having what???-
ANSWER-Connective tissue disease such as systemic lupus
erythematosus.
T/F
Most fetal dysrhythmias convert to normal sinus rhythm shortly
after birth-ANSWER-True
Most fetal dysrhythmias are not life–threatening, except for
___, which may lead to fetal congestive heart failure-ANSWER-
supraventricular tachycardia
3|P a g e
, In the presence of variable decelerations, progresive
hypoxemia may be characterized by-ANSWER-and increase in
baseline, loss of variability and the presence of overshoots
after the decelerations
Failure to exercise reasonable care is termed-ANSWER-
negligence
What is malpractice?-ANSWER-Failure of a professional to
render reasonable care whether from negligence or great
ignorance.
Human chorionic gonadotropin (hCG) is secreted by:-ANSWER-
Blastocysts & Placenta
hCG stimulates what two hormones until the developed
placenta can take over?-ANSWER-progesterone and estrogen
When are hCG levels are at their max?-ANSWER-between 60 to
70 days gestation and declines after.
4|P a g e
SESSION ORIGINAL COMPLETE QUESTION AND ANSWER
GRADED A+ 400 QUESTIONS WITH VERIFIED RATIONALES
What is the normal contraction frequency in the active phase of
labor?-ANSWER-q 2 to 3 min
Hyperstimulation is defined as:-ANSWER-More than 5
contractions in a 10 minute period, or contractions occuring
within 1 min of each other. (Usually averaged over 30 minute
period.)
Are coupling or tripling ominous signs?-ANSWER-No. It is a
common pattern early in labor and does not usually initiate
FHR responses.
At term, how much cardiac output perfuses the uterus each
minute?-ANSWER-10% to 15% or 600 to 750 ml
1|P a g e
,Fetal deoxygenated blood is carried to the placental villi by-
ANSWER-the two umbilical arteries
How does maternal–fetal exchange of oxygen and other
nutrients occur?-ANSWER-In the intervillous space across the
membranes that separate fetal and maternal circulation.
Oxygen is exchanged through passive diffusion (high
concentration is maternal side; low concentration is fetal side)
and nutrients are exchanged by active transport, facilitated
diffusion and pinocytosis.
The significant factors (3) affecting placental exchange of gases
and nutrients for the fetus are-ANSWER-uterine blood flow,
umbilical blood flow, and the amount of placental area
available for exchange.
Why does the FHR slowly drop in normal baseline as the fetus
matures?-ANSWER-The parasympathetic nervous system
matures during the second trimester, and the vegas nerve
(which slows the HR) gradually becomes dominant over
sympathetic stimulation.
2|P a g e
,Define FHR accelerations.-ANSWER-An abrupt increase in FHR
of at least 15 beats/min above baseline and the acceleration
lasts at least 15 seconds but less than 2 minutes. ("15 by 15")
(Before 32 weeks, 10 x 10.)
Causes of sinusoidal FHR patterns include:-ANSWER-Maternal–
fetal hemorrhage, placental abruption, or severe fetal anemia,
which can be caused by Rh isoimmunization. Can occur after
administration to some narcotics especially Stadol.
Approx 50% to 60% of mothers whose fetuses exhibit
congenital heart block have evidence of having what???-
ANSWER-Connective tissue disease such as systemic lupus
erythematosus.
T/F
Most fetal dysrhythmias convert to normal sinus rhythm shortly
after birth-ANSWER-True
Most fetal dysrhythmias are not life–threatening, except for
___, which may lead to fetal congestive heart failure-ANSWER-
supraventricular tachycardia
3|P a g e
, In the presence of variable decelerations, progresive
hypoxemia may be characterized by-ANSWER-and increase in
baseline, loss of variability and the presence of overshoots
after the decelerations
Failure to exercise reasonable care is termed-ANSWER-
negligence
What is malpractice?-ANSWER-Failure of a professional to
render reasonable care whether from negligence or great
ignorance.
Human chorionic gonadotropin (hCG) is secreted by:-ANSWER-
Blastocysts & Placenta
hCG stimulates what two hormones until the developed
placenta can take over?-ANSWER-progesterone and estrogen
When are hCG levels are at their max?-ANSWER-between 60 to
70 days gestation and declines after.
4|P a g e
