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: This is incorrect because venipuncture for blood work should be avoided on the affected arm. The mastectomy may have involved the removal of lymph nodes, which can impair the lymphatic drainage and increase the risk of lymphedema (swelling) in the arm. Venipuncture can cause further damage or infection to the arm.

Choice B reason: This is correct because the BP cuff should not be applied to the affected arm. The BP cuff can exert pressure on the arm and interfere with the blood and lymph flow. This can also increase the risk of lymphedema or pain in the arm.

Choice C reason: This is incorrect because the affected arm should not be held down close to the woman's side. The woman should be encouraged to elevate the arm above the level of the heart and perform gentle exercises to promote circulation and prevent stiffness. The arm should not be immobilized or restricted.

Choice D reason: This is incorrect because the affected arm should not be used for IV therapy. IV therapy can introduce fluids or medications into the arm that can affect the blood and lymph flow. It can also cause irritation or infection to the arm.

Choice A reason: Nonreactive is not the correct result, as it indicates that the FHR does not show adequate accelerations with fetal movement. A nonreactive NST means that the FHR does not increase by at least 15 beats/min for at least 15 seconds in a 20-minute period. A nonreactive NST may suggest fetal hypoxia (low oxygen) or fetal sleep.

Choice B reason: Reactive is the correct result, as it indicates that the FHR shows adequate accelerations with fetal movement. A reactive NST means that the FHR increases by at least 15 beats/min for at least 15 seconds twice or more in a 20-minute period. A reactive NST is reassuring and suggests that the fetus is well-oxygenated and healthy.

Choice C reason: Positive is not the correct result, as it is not used to describe the NST. Positive is a term used for the contraction stress test (CST), which is a different test that measures the FHR in response to uterine contractions. A positive CST means that the FHR shows late decelerations (decreases in the FHR that begin after the peak of a contraction and return to the baseline after the contraction ends) with at least 50% of the contractions. A positive CST indicates uteroplacental insufficiency (a condition where the placenta does not deliver enough oxygen and nutrients to the fetus) and fetal distress.

Choice D reason: Negative is not the correct result, as it is also not used to describe the NST. Negative is another term used for the CST, which is a different test that measures the FHR in response to uterine contractions. A negative CST means that the FHR does not show any late decelerations during at least three contractions in a 10-minute period. A negative CST is reassuring and suggests that the fetus is well-oxygenated and can tolerate labor.