Page 1 of 21
RELIAS - FETAL HEART MONITORING EXAM |
FREQUENTLY TESTED QUESTIONS WITH
CORRECT ANSWERS | BRAND NEW!
Uterine blood supply - ✔✔✔ Correct Answer > - uterine arteries deliver
oxygenated blood to spiral arteries which bring oxygen rich
blood to intervillous space of placenta that has fetal capillaries
- fetal capillaries carry the O2 rich blood to umbilical VEIN that
goes to fetus
-in contrast, the umbilical ARTERIES return waste products to
that intervillous space that go into mother's venous system
Potential issues that negatively affect fetal oxygenation - ✔✔✔
Correct Answer > *Maternal Oxygenation:* asthma, hyper- or hypo-
ventilation
*Maternal Circulation:* decreased maternal cardiac output,
hypotension, decreased Hgb
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*Placental O2 and CO2 Exchange:* postterm, abruption, HTN,
hypotension, uterine tachysystole
*Fetal circulation:* cord compression or occlusion
Fetal hypoxemia - ✔✔✔ Correct Answer > - can occur d/t reduced fetal
O2 reserves, excessive uterine activity, or reduced uteroplacental
blood flow
- worsening fetal hypoxemia can lead to abnormal FHR patterns,
mostly minimal or absent variability from acidemia
(1) hypoxemia vs. (2) hypoxia - ✔✔✔ Correct Answer > 1 - reduce O2 in
blood
2 - reduced O2 delivery at tissue level
Fetal anaerobic metabolism - ✔✔✔ Correct Answer > - occurs when
long term O2 delivery is insufficient to meet cellular needs of
tissues
- results in production of lactic acid and other noncarbonic acids
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- ACIDOSIS is the presence of excessive acids in tissues
Acidosis - ✔✔✔ Correct Answer > ph below 7.35
Ph is low
(acidosis is the process that leads to low blood ph, or acidemia)
Alkalosis - ✔✔✔ Correct Answer > ph above 7.45
Ph is high
Buffers - ✔✔✔ Correct Answer > - help maintain acid base
homeostasis
- 2 major fetal buffers are plasma bicarbonate and hgb
Base excess and base deficit - ✔✔✔ Correct Answer > - base deficit is
expressed as a positive number
- base excess is expressed as a negative number
RELIAS - FETAL HEART MONITORING EXAM |
FREQUENTLY TESTED QUESTIONS WITH
CORRECT ANSWERS | BRAND NEW!
Uterine blood supply - ✔✔✔ Correct Answer > - uterine arteries deliver
oxygenated blood to spiral arteries which bring oxygen rich
blood to intervillous space of placenta that has fetal capillaries
- fetal capillaries carry the O2 rich blood to umbilical VEIN that
goes to fetus
-in contrast, the umbilical ARTERIES return waste products to
that intervillous space that go into mother's venous system
Potential issues that negatively affect fetal oxygenation - ✔✔✔
Correct Answer > *Maternal Oxygenation:* asthma, hyper- or hypo-
ventilation
*Maternal Circulation:* decreased maternal cardiac output,
hypotension, decreased Hgb
,Page 2 of 21
*Placental O2 and CO2 Exchange:* postterm, abruption, HTN,
hypotension, uterine tachysystole
*Fetal circulation:* cord compression or occlusion
Fetal hypoxemia - ✔✔✔ Correct Answer > - can occur d/t reduced fetal
O2 reserves, excessive uterine activity, or reduced uteroplacental
blood flow
- worsening fetal hypoxemia can lead to abnormal FHR patterns,
mostly minimal or absent variability from acidemia
(1) hypoxemia vs. (2) hypoxia - ✔✔✔ Correct Answer > 1 - reduce O2 in
blood
2 - reduced O2 delivery at tissue level
Fetal anaerobic metabolism - ✔✔✔ Correct Answer > - occurs when
long term O2 delivery is insufficient to meet cellular needs of
tissues
- results in production of lactic acid and other noncarbonic acids
, Page 3 of 21
- ACIDOSIS is the presence of excessive acids in tissues
Acidosis - ✔✔✔ Correct Answer > ph below 7.35
Ph is low
(acidosis is the process that leads to low blood ph, or acidemia)
Alkalosis - ✔✔✔ Correct Answer > ph above 7.45
Ph is high
Buffers - ✔✔✔ Correct Answer > - help maintain acid base
homeostasis
- 2 major fetal buffers are plasma bicarbonate and hgb
Base excess and base deficit - ✔✔✔ Correct Answer > - base deficit is
expressed as a positive number
- base excess is expressed as a negative number
