It is important for the obstetric registered nurse to recognize the following danger signs of pregnancy: profuse vaginal bleeding, severe headaches/visual disturbances/abdominal pain, persistent vomiting, fever, chills, or swelling in the face or fingers. These may be signs of placental abnormalities, hypertensive disorders or pregnancy, maternal infection, or hyperemesis. Increased urination may be concerning to some women, but during pregnancy, the increased mass of the uterus induces pressure upon the bladder. 

The alpha-fetal protein (AFP) test is the only test that can predict neural tube defects in a fetus during pregnancy. CVS can detect fetal karyotype, sickle-cell anemia, phenylketonuria (PKU), Down syndrome, and Duchenne muscular dystrophy. Amniocentesis can detect genetic disorders and lung maturity. Ultrasounds provide images of the fetal position, measurements of the fetus and placenta, and can confirm pregnancy and gestational age. Non-stress tests (NST) are used to record fetal heart rate to assess fetal well being after 28 weeks gestation.

ASC-US or LSIL in women age 21-24 should be managed by repeat cytology in one year. Neither cervical conization nor LEEP (loop electrosurgical excision procedure) would be appropriate in a patient of this age or presentation.

Premature ovarian failure is the loss of ovarian function in an individual under the age of 40. A  and  would be indicative of this condition.

The most common symptoms of ectopic pregnancy are moderate to severe abdominal pain and vaginal bleeding. Pain may be cramping or sharp. Bleeding can be heavy and the individual can even begin to bleed into their abdominal cavity. Ectopic pregnancy is not consistent with fetal survival and requires treatment with methotrexate or, in the case of bleeding, surgery may be indicated.

The most likely cause of her rash is pruritic urticarial papules and plaques of pregnancy (PUPPP), a condition affecting about 1 in every 200 pregnancies. While she could be having an allergic reaction (dermatitis herpetiformis or urticaria) or an inflammatory eruption such as heat rash, these are less likely due to their absence before pregnancy and the absence of any significant changes in her diet or lifestyle.

In the average normal pregnancy, the GFR increases by upwards of 50%. This correlates with an overall 50% increase in blood plasma volume. 

In placenta previa, the placenta develops in such a way that all or part of it is positioned in the lower one-third of the uterus, placing it between the fetus and the cervix. This can cause the placenta to tear and bleed. The most common sign is painless vaginal bleeding in the third trimester (generally after week 32). 

Hegar's sign is indicated by a softening of the portion of the uterus between the uterus and a portion of the cervix. The remaining choices are all examples of various skin discolorations commonly associated with pregnancy.

It is not necessary to limit water intake in women with pre-eclampsia. It is important that women with pre-eclampsia drink at least 8 glasses of water per day. The ingestion of water may even help reduce swelling. Checking blood pressure and body weight frequently are important in tracking fluid levels. It is also important to keep track of fetal movement and notify a provider immediately if decrease in movement is noted. Women who are preeclamptic may spill protein into their urine as a result of malfunctioning kidneys.