A pregnant woman's biophysical profile score is 8. She asks the nurse to explain the results. The nurse's best response is:

Choice A reason: A blood pressure increase to 138/86 mm Hg is not a concerning finding for preeclampsia. The diagnostic criteria for preeclampsia include a BP of 140/90 mm Hg or higher on two occasions at least 4 hours apart, or a BP of 160/110 mm Hg or higher on one occasion.

Choice B reason: Pitting pedal edema at the end of the day is not a concerning finding for preeclampsia. Edema is a common symptom of pregnancy and can be influenced by factors such as hydration, activity, and posture. Edema is not a reliable indicator of preeclampsia.

Choice C reason: Weight gain of 0.5 kg during the past 2 weeks is not a concerning finding for preeclampsia. The recommended weight gain for a normal-weight woman during pregnancy is 11.5 to 16 kg, with an average of 0.4 kg per week in the second and third trimesters.

Choice D reason: A dipstick value of 3+ for protein in her urine is a concerning finding for preeclampsia. Proteinuria is one of the hallmark signs of preeclampsia and indicates renal impairment. A dipstick value of 3+ corresponds to a protein concentration of 300 mg/dL or higher, which is considered severe.

Choice A reason: This is not a good intervention, as it may worsen the symptoms of faintness, dizziness, and agitation. Standing up can cause a sudden drop in blood pressure (orthostatic hypotension), which can reduce the blood flow to the brain and the fetus. This can cause lightheadedness, blurred vision, and loss of consciousness in the woman, as well as fetal distress or hypoxia.

Choice B reason: This is not a good intervention, as it may also worsen the symptoms of faintness, dizziness, and agitation. Lying supine can cause compression of the inferior vena cava (a large vein that returns blood to the heart) by the gravid uterus, which can reduce the cardiac output (the amount of blood pumped by the heart) and the blood pressure. This can cause nausea, sweating, and visual disturbances in the woman, as well as fetal distress or hypoxia.

Choice C reason: This is not a good intervention, as it may not improve the symptoms of faintness, dizziness, and agitation. Sitting down and holding the arm in a dependent position can lower the blood pressure in the arm, but not in the rest of the body. This can cause inaccurate readings of the blood pressure and delay the detection of hypotension or hypertension. This can also cause discomfort and pain in the arm due to impaired circulation.

Choice D reason: This is the best intervention, as it can relieve the symptoms of faintness, dizziness, and agitation by improving the blood flow to the brain and the fetus. Turning to the left side can reduce the pressure of the uterus on the inferior vena cava and increase the cardiac output and the blood pressure. This can also optimize the placental perfusion (the blood flow to the placenta) and the fetal oxygenation.