N164 Final Exam Questions With 100% Verified Answers
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Course
N164
Institution
N164
N164 Final Exam Questions With 100%
Verified Answers
What diagnostic testing is conducted on maternal blood? (3) - answerCoomb's test: assessing
for Rh antibodies; if greater than 1:8 or 1:32, Rho-gam given
Cell-free DNA: risk assessment done to assess for potential aneuploidies
AFP-- possibil...
N164 Final Exam Questions With 100%
Verified Answers
What diagnostic testing is conducted on maternal blood? (3) - answer✔Coomb's test: assessing
for Rh antibodies; if greater than 1:8 or 1:32, Rho-gam given
Cell-free DNA: risk assessment done to assess for potential aneuploidies
AFP-- possibility of NTD
What diagnostic testing is conducted on amniotic fluid? (8) - answer✔Assessment of fetal lung
maturity:
- L/S ratio: anything lower than 2.0:1 is not good -- usually a sign lungs are not mature
- Presence of phosphatidylglycerol (indicative of mature lungs)
- Lamellar Body Count (LBC)... anything above 50,000/uL is indicative of mature lungs
Gestational Age:
- Creatinine > 2 mg/dL, gestational age > 36 weeks
- Lipid cells > 10%, gestational age > 35 weeks
- Osmolality declines after 20 weeks
- AFP (alpha-fetoprotein A)-- high levels after 15 weeks are associated with neural tube defects
- Genetic testing-- dependent on cultured cells for karyotype and enzymatic activity; counseling
may be required.
Explain the purpose of the biophysical profile. How is it scored? - answer✔Noninvasive, reliable
fetal assessment performed in the late 2nd & 3rd trimesters based on acute and chronic markers
of fetal disease via ultrasound to predict fetal well-being.
Scored (2 or 0) by evaluating fetal breath movements, fetal movements, fetal tone, amniotic fluid
level, non-stress test
How is BPP scoring interpreted? - answer✔BPP of 8 or 10 with a NORMAL AFV, is considered
a normal, healthy fetus
A score 8 and above requires repeat testing weekly or twice weekly
**look at chart for other scoring
What are the advantages (5) and disadvantages (4) of a non-stress test? - answer✔Advantages:
- non-invasive
- easy to perform and interpret
- quick
- relatively inexpensive
- no known contraindications
Disadvantages:
- twice weekly testin g
- high false positive
- low false negative
- less sensitive than BPP
What would be observed in a non-stress test of a normal, healthy fetus ("reactive" result)? What
should be interpreted form a non-reactive (abnormal) result? - answer✔Fetus produces
characteristic HR patterns in response to fetal movement, uterine contractions, or stimulation
Non-reactive result typically doesn't indicate compromise-- could be fetus is in a quiet sleep state
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