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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?

A.

Magnetic Resonance Imaging (MRI).

B.

Doppler flow studies.

C.

Amniocentesis.

D.

Chorionic villus sampling (CVS).

Answer and Explanation

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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View Related questions

Correct Answer is A

Explanation

Choice A rationale

Late decelerations are a sign of uteroplacental insufficiency and fetal hypoxia. They occur after the peak of a contraction and indicate that the fetus is not receiving enough oxygen. This requires immediate intervention to improve fetal oxygenation and prevent fetal distress.

Choice B rationale

Variability in fetal heart rate of 12 bpm is considered moderate variability, which is a reassuring sign of fetal well-being. It indicates that the fetus has a healthy autonomic nervous system and is not in distress.

Choice C rationale

Accelerations in fetal heart rate are also a reassuring sign. They indicate that the fetus is well-oxygenated and responding appropriately to stimuli. No intervention is needed for accelerations.

Choice D rationale

A baseline fetal heart rate of 140 bpm is within the normal range (110-160 bpm) and does not indicate any immediate concern. It is a sign of a healthy, well-oxygenated fetus.

Correct Answer is B

Explanation

Choice A rationale

Variable decelerations are not related to the use of narcotic analgesics. Narcotic analgesics can cause other fetal heart rate changes, such as decreased variability, but they do not cause variable decelerations.

Choice B rationale

Variable decelerations are due to umbilical cord compression. This is the correct interpretation. Umbilical cord compression can lead to transient decreases in fetal blood flow and oxygenation, resulting in variable decelerations on the fetal monitor tracing.

Choice C rationale

Variable decelerations are not caused by maternal hypotension. Maternal hypotension can lead to late decelerations due to uteroplacental insufficiency, but it does not cause variable decelerations.

Choice D rationale

Variable decelerations are not indicative of fetal hypoxia. While severe and persistent variable decelerations can lead to fetal hypoxia, the primary cause of variable decelerations is umbilical cord compression.

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