A pregnant woman undergoes a triple/quadruple screen at 16 to 18 weeks' gestation. What would the nurse suspect if the woman's alpha-fetoprotein (AFP) level is decreased?

Choice A Reason: Homelessness is a risk factor for high-risk pregnancy because it exposes the woman to various challenges and stressors that can affect her health and well-being. Homeless women may face difficulties in accessing adequate nutrition, hygiene, safety, shelter, transportation, and health care. They may also experience higher levels of violence, substance abuse, mental illness, and social isolation. These factors can increase the risk of infections, complications, preterm birth, low birth weight, and infant mortality.

Choice B Reason: Age is not a risk factor for high-risk pregnancy in this case because the woman is 22 years old, which is within the optimal age range for childbearing. The optimal age range is considered to be between 20 and 35 years old, as women in this age group tend to have fewer complications and better outcomes than women who are younger or older. Women who are younger than 20 or older than 35 are considered to have advanced maternal age or adolescent pregnancy, respectively, which are risk factors for high-risk pregnancy.

Choice C Reason: BP 110/70 is not a risk factor for high-risk pregnancy because it is within the normal range for blood pressure. The normal range for blood pressure is considered to be between 90/60 and 120/80 mmHg. Blood pressure that is too high or too low can indicate problems such as preeclampsia, eclampsia, or hypotension, which are risk factors for high-risk pregnancy.

Choice D Reason: BMI 17.5 is a risk factor for high-risk pregnancy because it indicates that the woman is underweight. BMI stands for body mass index, which is a measure of body fat based on height and weight. The normal range for BMI is considered to be between 18.5 and 24.9 kg/m2. BMI that is too low or too high can indicate problems such as malnutrition, obesity, or gestational diabetes, which are risk factors for high-risk pregnancy.

Choice E Reason: Prenatal care is a risk factor for high-risk pregnancy because it indicates that the woman has not received adequate medical attention and support during her pregnancy. Prenatal care is essential for ensuring the health and well-being of both the mother and the baby. Prenatal care involves regular visits to a health care provider who can monitor the progress of the pregnancy, screen for any complications or infections, provide education and counseling, and prescribe any necessary medications or interventions. Lack of prenatal care can increase the risk of maternal mortality, morbidity, preterm birth, low birth weight, congenital anomalies, and infant mortality.

Choice F Reason: Prenatal history is a risk factor for high-risk pregnancy because it indicates that the woman has had previous pregnancies that ended in miscarriage or stillbirth. Prenatal history can provide important information about the woman's reproductive health and potential complications that may recur or affect her current pregnancy. Previous pregnancy losses can indicate problems such as genetic abnormalities, chromosomal disorders, infections, immunological factors, hormonal imbalances, uterine abnormalities, or placental issues. These factors can increase the risk of spontaneous abortion, fetal demise, preterm birth, intrauterine growth restriction (IUGR), or placenta previa.

Choice A Reason: Nausea is a common presumptive sign of pregnancy, especially in the first trimester. It is caused by hormonal changes and may be accompanied by vomiting.

Choice B Reason: Abdominal enlargement is another presumptive sign of pregnancy, as the uterus grows to accommodate the developing fetus. It may be noticeable as early as 12 weeks of gestation.

Choice C Reason: A positive pregnancy test is a presumptive sign of pregnancy, as it detects the presence of human chorionic gonadotropin (hCG), a hormone produced by the placenta. However, it is not a definitive sign, as it may be affected by other factors such as medications, tumors, or false positives.

Choice D Reason: Braxton Hicks contractions are not a presumptive sign of pregnancy, but a probable sign. They are irregular and painless contractions of the uterus that occur throughout pregnancy, but become more frequent and noticeable in the third trimester. They are also known as false labor contractions.

Choice E Reason: Amenorrhea, or the absence of menstrual periods, is a presumptive sign of pregnancy, as it indicates that ovulation has ceased. However, it is not a definitive sign, as it may be caused by other factors such as stress, illness, or hormonal imbalances.