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AWHONN Fetal Heart monitoring basics Exam Questions and Answers

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AWHONN Fetal Heart monitoring basics Exam Questions and Answers Which contraction characteristics can be assessed with a tocodynamometer? a) Frequency b) Duration c) Intensity - ANSWER-a) Frequency b) Duration All Fetuses of mothers in labor experience an interruption of the oxygenation path...

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  • October 29, 2024
  • 55
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • POEP AWHONN
  • POEP AWHONN
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FIRST PUBLISH OCTOBER 2024




AWHONN Fetal Heart monitoring basics

Exam Questions and Answers


Which contraction characteristics can be assessed with a tocodynamometer?


a) Frequency


b) Duration


c) Intensity - ANSWER✔✔-a) Frequency


b) Duration


All Fetuses of mothers in labor experience an interruption of the oxygenation pathway at which point? -

ANSWER✔✔-Uterus


The FHR can be monitored using doppler ultrasound?


a) Throughout labor and delivery unless the use of a more accurate method is clearly indicated


b) Internally


c) Only early in labor



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d) The FHR cannot be monitored by doppler ultrasound - ANSWER✔✔-a) Throughout labor and delivery

unless the use of a more accurate method is clearly indicated


What is the normal range for FHR base line in a term infant?


a) 80-120 bpm


b) 110-160 bpm


c) 140-180bpm


d) it depends on the sex of the fetus - ANSWER✔✔-b) 110-160 bpm


Trace the flow of oxygen from mother to fetus and back. - ANSWER✔✔-Mother's inhalation to lungs to

mat. circulatory system to hemoglobin in RBC's to bloodstream in uterus. Uterus to spiral arteries to

placenta to intervillous space to travel via simple diffusion into the villi. The capillaries to the umb. vein

to the fetus.


The umb. artery sends waste (CO2) to the intervillous space to the mothers venous system.


What factors impact maternal oxygen delivery? - ANSWER✔✔-1. Mother (blood plasma, cardiac output,

hemoglobin concentration & O2 saturation)


2. Placenta/intervillous space (uterine contractions & calcification's)


3. Fetus (vagal response aka decel or cord compression)


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By what % does maternal cardiac output increase above the non-pregnant state and what position helps

this uteroplacental blood flow? - ANSWER✔✔-30-50%


lateral recumbent or semi-Fowler's


Define tachysystole contractions and the cause of. - ANSWER✔✔->5 contractions in 10 min (more

frequently than Q 2 min) averaged over 30 min window.


Caused by oxytocin, aminoinfusion or in rare cases spontaneously.


List interventions for tachysystole contractions. - ANSWER✔✔-Maintaining mat. volume, mat.

positioning, intravenous hydration. Decreasing mat. pain/anxiety.


1. Reposition pt to side.


2. Admin IV fluid bolus.


3. Admin 0.25mg terbutaline SQ.


4. Admin O2 10L via non rebreather face mask.


Describe passive diffusion as related to the maternal placental fetal system. - ANSWER✔✔-higher conc.

to lower concentration.


1.Oxygen from maternal (higher) to fetal compartment (lower) to fetal hgb then transported to fetal

tissue.


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2. CO2 returns to intervillous space by passive diffusion and is removed by the mat. venous system.


Maternal hypotension is a potential side effect of regional anesthesia and analgesia. What nursing

interventions could you use to raise the client's blood pressure? Choose all that apply.


A) Place the woman in a supine position.


B) Place the woman in a lateral position.


C) Increase intravenous (IV) fluids.


D) Continuous Fetal Monitor


E) Administer ephedrine per MD order - ANSWER✔✔-Place her in lateral position, & increase IV fluids. If

no improvement may need to give epi to increase vascular tone.


Define maternal hypertension (gestational). - ANSWER✔✔-systolic BP >= 140mm hg, a diastolic BP>= 90

mm hg or MAP of >=105


What is the normal expected value for a term fetal HGB? - ANSWER✔✔-17g/dl, fetal hgb has a higher

oxygen affinity than an adult to develop in an oxygen poor environment. The fetal circulatory pattern

ensures blood with higher O2 and nutrition content is delivered to the vital organs (brain and heart) to

tolerate the stress of labor.


detail the umbilical cord - ANSWER✔✔-1 vein, 2 arteries encased in wharton's jelly.



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