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 A
Explanation
An NST is a test that measures the fetal heart rate in response to fetal movement.
It is a non-invasive and simple way to assess fetal well-being.
An NST may be recommended to further evaluate fetal well-being if the CST result is equivocal, meaning that occasional but not persistent late decelerations are present.
Choice B. Amniocentesis is wrong because it is an invasive procedure that involves inserting a needle into the uterus to collect amniotic fluid for genetic testing or fetal lung maturity.
It is not used to evaluate fetal well-being in response to contractions.
Choice C. Magnetic resonance imaging (MRI) is wrong because it is an imaging technique that uses magnetic fields to create detailed pictures of the fetus and the placenta.
It is not used to evaluate fetal well-being in response to contractions.
Choice D. Chorionic villus sampling (CVS) is wrong because it is an invasive procedure that involves inserting a catheter or a needle into the placenta to collect chorionic villi for genetic testing.
It is not used to evaluate fetal well-being in response to contractions.
Normal ranges for CST are negative (normal) or positive (abnormal).
Equivocal and unsatisfactory are special categories of test outcomes that require further testing.
Normal ranges for NST are reactive (reassuring) ornon-reactive (non-reassuring).
Correct Answer is A
Explanation
This is because migraine headaches with aura are a contraindication for receiving oral contraceptives, as they increase the risk of stroke and other cardiovascular complications.
Some possible explanations for the other choices are:
Choice B: A 32-year-old client who has endometriosis.
This is not a contraindication for receiving oral contraceptives, as they can actually help reduce the symptoms of endometriosis by suppressing ovulation and reducing menstrual bleeding.
Choice C: A 28-year-old client who has polycystic ovary syndrome (PCOS).
This is not a contraindication for receiving oral contraceptives, as they can help regulate the menstrual cycle and lower the levels of androgens (male hormones) that cause acne, hirsutism (excess hair growth), and other problems in women with PCOS.
Choice D: A 22-year-old client who has irregular menstrual cycles.
This is not a contraindication for receiving oral contraceptives, as they can help normalize the menstrual cycle and prevent unintended pregnancy.
Normal ranges for oral contraceptive doses are:
Estrogen: 10 to 35 mcg of ethinyl estradiol or estradiol valerate
Progestin: varies depending on the type and brand of oral contraceptive
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