A woman diagnosed with marginal placenta previa gave birth vaginally 15 minutes ago. At the present time she is at the greatest risk for:

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: Woman shorter than 62 inches or 157 cm should not restrict her weight gain during pregnancy, as she may have a higher risk of delivering a low birth weight infant. She should follow the recommended weight gain guidelines based on her pre-pregnancy body mass index (BMI).

Choice B reason: Woman in early adolescence should not restrict her weight gain during pregnancy, as she is still growing and developing herself. She may need more calories and nutrients than an adult woman to support her own health and the fetal growth.

Choice C reason: Woman who was 30 lbs overweight before pregnancy should restrict her weight gain during pregnancy, as she may have a higher risk of developing gestational diabetes, hypertension, or preeclampsia. She should aim for a lower weight gain range than a woman with a normal BMI.

Choice D reason: Woman pregnant with twins should not restrict her weight gain during pregnancy, as she needs more energy and nutrients to support the growth of two fetuses. She should aim for a higher weight gain range than a woman with a singleton pregnancy.