A nurse is explaining the purpose of a Doppler ultrasound blood flow analysis to a client who has intrauterine growth restriction (IUGR).
The nurse should inform the client that this test measures which of the following?
The velocity of blood flow in the uterine and fetal vessels.
The amount of amniotic fluid in the uterine cavity.
The pressure of blood flow in the umbilical cord.
The oxygen saturation level of fetal blo.
The Correct Answer is A
A Doppler ultrasound blood flow analysis measures the velocity of blood flow in the uterine and fetal vessels.
This test can help assess the fetal well-being and oxygenation in cases of intrauterine growth restriction (IUGR).
Choice B is wrong because the amount of amniotic fluid in the uterine cavity is measured by ultrasound, not Doppler.
Choice C is wrong because the pressure of blood flow in the umbilical cord is not directly measured by Doppler, but rather inferred from the resistance index or pulsatility index.
Choice D is wrong because the oxygen saturation level of fetal blood is not measured by Doppler, but rather by fetal scalp sampling or pulse oximetry.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
The correct answer is choice D. The client has a history of placenta previa.
Placenta previa is a condition where the placenta covers all or part of the cervix, blocking the baby’s exit from the uterus.
This can cause severe bleeding during pregnancy and delivery and increase the risk of complications for both the mother and the baby.
Therefore, the nurse should report this condition to the provider before performing an amniocentesis.
Choice A is wrong because having Rh-negative blood type is not a contraindication for amniocentesis.
However, the client may need an injection of Rh immunoglobulin after the procedure to prevent Rh sensitization.
Choice B is wrong because having a history of preterm labor is not a contraindication for amniocentesis.
However, the client may need to be monitored closely for signs of preterm labor after the procedure.
Choice C is wrong because having a history of gestational diabetes is not a contraindication for amniocentesis.
However, the client may need to have their blood glucose levels checked before and after the procedure.
Amniocentesis is a diagnostic procedure that involves removing and testing a small sample of amniotic fluid from the uterus for genetic or chromosomal conditions, such as Down syndrome, Edwards syndrome or Patau syndrome.
It can also be used to diagnose fetal infections, treat excess amniotic fluid, or test fetal lung maturity
Correct Answer is B
Explanation
An amniotic fluid index (AFI) of 4 cm indicates oligohydramnios, which is a low amount of amniotic fluid.
Oligohydramnios can be caused by various factors, such as uteroplacental insufficiency, rupture of membranes, postterm pregnancy, fetal anomalies, or certain medications.
Oligohydramnios can lead to complications such as fetal death, intrauterine growth restriction, limb contractures, or delayed lung maturation.
Choice A is wrong because an AFI of 8 cm is within the normal range for amniotic fluid volume.
Choice C is wrong because a single vertical pocket of amniotic fluid measuring 3 cm is also within the normal range for amniotic fluid volume.
Choice D is wrong because a single vertical pocket of amniotic fluid measuring 5 cm is also within the normal range for amniotic fluid volume.
Normal ranges for AFI and single vertical pocket are > 5 to < 24 cm and ≥ 2 to < 8 cm, respectively.
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