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?

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

The correct answer is choice B. Monitor fetal heart rate.

This is because cramping and vaginal bleeding after amniocentesis are signs of possible complications such as miscarriage, preterm labor, or injury to the fetus.

Monitoring fetal heart rate can help assess the well-being of the fetus and detect any signs of distress.

Choice A is wrong because administering Rho(D) immunoglobulin is only necessary if the mother has Rh-negative blood and the baby has Rh-positive blood, which can cause Rh sensitization.

This is not given routinely to all women who have amniocentesis.

Choice C is wrong because assessing maternal vital signs is not the first priority when there is a risk of fetal compromise.

Maternal vital signs can be affected by many factors and are not specific indicators of fetal health.

Choice D is wrong because obtaining an order for an ultrasound exam is not the first action to take.

An ultrasound exam can help confirm the diagnosis of complications such as placental abruption or fetal demise, but it requires time and equipment that might delay immediate intervention.

Monitoring fetal heart rate can be done quickly and easily at the bedside.