Advanced Fetal Monitoring Test Questions and Answers Graded A
Cat 1 - -What category rules out fetal
acidemia?
They are constricted which decreases blood flow
- -What happens to the spiral arteries
Severe astha, cardiac issues, and ecclampic during pre-e?
seizures - -What maternal conditions
greatly impact fetal oxygenation?
The aorta and vena cava get compressed (20
weeks) - -Why does the supine position
intervillous space - -Where does the cause decreased uteroplactenal blood flow?
exchange of O2 and nutrients take place?
Blocks the sympathetic pathway
O2 enters the intervillous space via the maternal Pooling of blood in the lower extremities
arteries, to the villi then the umbilical vein take decreases blood flow back to moms heart which
the o2 blood to the fetus. The umbilical arteries decreases blood flow to the fetus - -Why
take the deO2 blood from the baby through the does maternal hypotension happen after regional
villi and back to the mother - -How is o2 analgesia?
blood transferred to the fetus?
60% - -What percentage is uteroplacental
High to low concentration blood flow decreased by during cxts?
Mom to fetus for O2
Low to high concentration for CO2 so baby to
mom - -Diffusion Environment to lungs to heart to vasculature to
uterus to placenta to umbilical cord - -
Explain the pathway for maternal- fetal exchange
Diffusion - -How is O2 transferred from for fetal oxygenation (basic)
mom to baby
Limbs, kidneys, and descending aorta - -
Carry O2 into intervillous space Where is the least O2 blood in the fetus?
Are maximally dilated so they can not be
increased - -Explain spiral arteries in
placenta Umbilical vein and ductous venous - -
Where is the most O2 blood in the fetus?
Maternal conditions like pre-e and cardiac
disease Ductus venosus - -Connects the umbilical
Maternal hypotension vein to the inferior vena cava, bypassing the liver
Placental changes- abruptions, infections, Shunt that allows most O2 blood to fetal heart
edema, or smaller size
Excessive uterine activity
Vasoconstriction - -What are factors that ductus venosus, foramen ovale, ductus
can decrease uteroplacental blood flow? arteriosus - -3 important shunts in fetal
1/7
, Advanced Fetal Monitoring Test Questions and Answers Graded A
circulation Protect
Regulates BP - -What do baroreceptors
do?
Foramen Ovale - -connects the two atria in
the fetal heart
Allows O2 blood to flow through the heart and Decreased FHR, BP and CO - -What effect
directly to the brain do baroreceptors have on the fetus?
Ductus Arteriosus - -a blood vessel in a The cord gets compressed and then fetal BP
fetus that bypasses pulmonary circulation by increased which triggers baroreceptors that
connecting the pulmonary artery directly to the decreased the FHR which produces a variable -
ascending aorta -What happens when there is cord
compression (in regards to baroreceptors)?
80-100 mL/kg - -What is a normal blood
volume for a fetus at term? Variables - -What decels relate to
baroreceptors?
Increased heart rate - -What happens if
you stimulate the sympathetic nervous system? Lates - -What decels relate to
chemoreceptors?
Regulates the sympathetic - -What does
the parasympathetic nervous system do? Increased PCO2
Decreased PO2 and pH - -What action
takes place when chemoreceptors are
Increased heart rate - -What happens stimulated?
when catecholamines (sympathetic) get
released?
Bradycardia and hypertension - -What
effect do chemoreceptors have?
The sympathetic develops first so there is no
parasympathetic to regulate the heart rate -
-Why do pre-termers have increased heart Decreased or absent variability - -
rates?
The stoke volume does not fluctuate - -
Acetylcholine is released which decreases the What differs in fetal CO from adult CO?
intrinsic heart rate
Vagus stimulation - -What happens when
the parasympathetic nervous system is The CO decreases which leads to hypoxia and
stimulated? acidemia - -What happens when the fetal
heart decreases (in regards to CO)?
2/7
Cat 1 - -What category rules out fetal
acidemia?
They are constricted which decreases blood flow
- -What happens to the spiral arteries
Severe astha, cardiac issues, and ecclampic during pre-e?
seizures - -What maternal conditions
greatly impact fetal oxygenation?
The aorta and vena cava get compressed (20
weeks) - -Why does the supine position
intervillous space - -Where does the cause decreased uteroplactenal blood flow?
exchange of O2 and nutrients take place?
Blocks the sympathetic pathway
O2 enters the intervillous space via the maternal Pooling of blood in the lower extremities
arteries, to the villi then the umbilical vein take decreases blood flow back to moms heart which
the o2 blood to the fetus. The umbilical arteries decreases blood flow to the fetus - -Why
take the deO2 blood from the baby through the does maternal hypotension happen after regional
villi and back to the mother - -How is o2 analgesia?
blood transferred to the fetus?
60% - -What percentage is uteroplacental
High to low concentration blood flow decreased by during cxts?
Mom to fetus for O2
Low to high concentration for CO2 so baby to
mom - -Diffusion Environment to lungs to heart to vasculature to
uterus to placenta to umbilical cord - -
Explain the pathway for maternal- fetal exchange
Diffusion - -How is O2 transferred from for fetal oxygenation (basic)
mom to baby
Limbs, kidneys, and descending aorta - -
Carry O2 into intervillous space Where is the least O2 blood in the fetus?
Are maximally dilated so they can not be
increased - -Explain spiral arteries in
placenta Umbilical vein and ductous venous - -
Where is the most O2 blood in the fetus?
Maternal conditions like pre-e and cardiac
disease Ductus venosus - -Connects the umbilical
Maternal hypotension vein to the inferior vena cava, bypassing the liver
Placental changes- abruptions, infections, Shunt that allows most O2 blood to fetal heart
edema, or smaller size
Excessive uterine activity
Vasoconstriction - -What are factors that ductus venosus, foramen ovale, ductus
can decrease uteroplacental blood flow? arteriosus - -3 important shunts in fetal
1/7
, Advanced Fetal Monitoring Test Questions and Answers Graded A
circulation Protect
Regulates BP - -What do baroreceptors
do?
Foramen Ovale - -connects the two atria in
the fetal heart
Allows O2 blood to flow through the heart and Decreased FHR, BP and CO - -What effect
directly to the brain do baroreceptors have on the fetus?
Ductus Arteriosus - -a blood vessel in a The cord gets compressed and then fetal BP
fetus that bypasses pulmonary circulation by increased which triggers baroreceptors that
connecting the pulmonary artery directly to the decreased the FHR which produces a variable -
ascending aorta -What happens when there is cord
compression (in regards to baroreceptors)?
80-100 mL/kg - -What is a normal blood
volume for a fetus at term? Variables - -What decels relate to
baroreceptors?
Increased heart rate - -What happens if
you stimulate the sympathetic nervous system? Lates - -What decels relate to
chemoreceptors?
Regulates the sympathetic - -What does
the parasympathetic nervous system do? Increased PCO2
Decreased PO2 and pH - -What action
takes place when chemoreceptors are
Increased heart rate - -What happens stimulated?
when catecholamines (sympathetic) get
released?
Bradycardia and hypertension - -What
effect do chemoreceptors have?
The sympathetic develops first so there is no
parasympathetic to regulate the heart rate -
-Why do pre-termers have increased heart Decreased or absent variability - -
rates?
The stoke volume does not fluctuate - -
Acetylcholine is released which decreases the What differs in fetal CO from adult CO?
intrinsic heart rate
Vagus stimulation - -What happens when
the parasympathetic nervous system is The CO decreases which leads to hypoxia and
stimulated? acidemia - -What happens when the fetal
heart decreases (in regards to CO)?
2/7
