The OB provider is concerned about placental perfusion and intrauterine growth restriction (IUGR) after noting minimal fetal growth over the past month.
What non-invasive antenatal test would the nurse anticipate the provider will order?
Magnetic Resonance Imaging (MRI).
Doppler flow studies.
Amniocentesis.
Chorionic villus sampling (CVS).
The Correct Answer is B
Choice A rationale
Magnetic Resonance Imaging (MRI) is a non-invasive imaging technique that provides detailed images of the fetus and placenta. However, it is not typically used as the first-line test for assessing placental perfusion and IUGR. Doppler flow studies are more specific for evaluating blood flow and detecting issues related to placental insufficiency.
Choice B rationale
Doppler flow studies are non-invasive tests that assess blood flow in the umbilical artery and other fetal vessels. These studies are particularly useful in evaluating placental perfusion and identifying intrauterine growth restriction (IUGR). Abnormal Doppler flow patterns can indicate compromised blood flow to the fetus, which is a concern in cases of minimal fetal growth.
Choice C rationale
Amniocentesis is an invasive procedure that involves extracting a sample of amniotic fluid for genetic testing and assessment of fetal lung maturity. It is not used for evaluating placental perfusion or IUGR7.
Choice D rationale
Chorionic villus sampling (CVS) is an invasive procedure used for early genetic testing by sampling placental tissue. It is not used for assessing placental perfusion or IUGR7.
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Correct Answer is A
Explanation
Choice A rationale
Amniocentesis is a diagnostic test that involves extracting a small amount of amniotic fluid from the uterus to test for chromosomal abnormalities and genetic disorders. It is typically performed between 15 and 20 weeks of pregnancy. The fluid contains fetal cells and various chemicals produced by the baby, which can be analyzed to detect conditions such as Down syndrome, trisomy 18, and neural tube defects. This test is highly accurate and is often recommended when screening tests like the MSAFP indicate a potential issue.
Choice B rationale
A Nonstress Test (NST) is a non-invasive test that measures the fetal heart rate in response to its movements. It is used to assess fetal well-being, particularly in the third trimester, but it does not provide information about chromosomal abnormalities. The NST is typically used to monitor high-risk pregnancies and to ensure that the fetus is receiving enough oxygen.
Choice C rationale
A Biophysical Profile (BPP) combines an ultrasound with a Nonstress Test to evaluate the fetus’s health. It assesses fetal breathing movements, body movements, muscle tone, amniotic fluid volume, and heart rate reactivity. While it provides a comprehensive assessment of fetal well-being, it does not specifically diagnose chromosomal abnormalities. The BPP is often used in the third trimester to monitor high-risk pregnancies.
Choice D rationale
Chorionic Villus Sampling (CVS) is another diagnostic test that can detect chromosomal abnormalities and genetic disorders. It involves taking a small sample of placental tissue (chorionic villi) for analysis. CVS is typically performed between 10 and 13 weeks of pregnancy, earlier than amniocentesis. While it provides similar diagnostic information, it is not the test of choice following an abnormal MSAFP result, which is usually conducted later in pregnancy.
Correct Answer is A
Explanation
Choice A rationale
- Thenon-stress test (NST)is reactive, indicating normal fetal heart rate patterns with adequate accelerations.
- Theultrasoundshows normal amniotic fluid index and fetal movements, with no abnormalities detected.
- The client has no significant medical history and is generally feeling well.
These findings suggest that the fetus is currently well, and there is no immediate need for further intervention. However, the client should be instructed to monitor fetal movements at home and return if there are any concerns or if decreased fetal movement persists. This approach balances the need for vigilance with the reassurance provided by the normal test results.
.
Choice B rationale
Continuous fetal monitoring is typically reserved for cases where there is a significant concern for fetal distress or other complications. In this case, both the non-stress test (NST) and ultrasound results are normal, indicating that the fetus is currently well. Therefore, continuous monitoring in a hospital setting is not necessary.
Choice C rationale
An immediate cesarean section is a major surgical procedure that is usually performed when there is an urgent risk to the mother or baby. Given the normal NST and ultrasound findings, there is no indication of fetal distress or other complications that would warrant such an intervention at this time.
Choice D rationale
Corticosteroids are given to enhance fetal lung maturity in cases where preterm delivery is anticipated, typically before 34 weeks of gestation. Since the client is already at 35 weeks and there is no indication of imminent preterm labor or other complications, administering corticosteroids is not necessary..