A nurse is assessing a client who is pregnant for preeclampsia. Which of the following findings should indicate to the nurse that the client requires further evaluation for this disorder?

Choice A reason: Polyuria is not an expected finding in a client with severe preeclampsia, as it can indicate dehydration, diabetes, or renal impairment. A client with severe preeclampsia may have oliguria, which is a urine output of less than 500 mL in 24 hours, due to the decreased renal perfusion and function.

Choice B reason: Report of headache is an expected finding in a client with severe preeclampsia, as it can indicate increased intracranial pressure, cerebral edema, or vasospasm. A client with severe preeclampsia may also have other neurological symptoms, such as blurred vision, scotoma, photophobia, or hyperreflexia.

Choice C reason: Tachycardia is not an expected finding in a client with severe preeclampsia, as it can indicate dehydration, infection, anxiety, or fetal distress. A client with severe preeclampsia may have bradycardia, which is a heart rate of less than 60 beats per minute, due to the increased vagal tone and blood pressure.

Choice D reason: Absence of clonus is not an expected finding in a client with severe preeclampsia, as it can indicate normal or decreased neuromuscular irritability. A client with severe preeclampsia may have positive clonus, which is a rhythmic jerking of the foot when the ankle is dorsiflexed, due to the increased reflex excitability and hyperactivity.

Choice A reason: Painless red vaginal bleeding is the most characteristic finding of placenta previa, which is a condition where the placenta covers the cervical opening and can cause bleeding in the third trimester. Painless red vaginal bleeding occurs because the placenta is detached from the lower uterine segment as the cervix dilates or effaces, and the blood vessels are torn. The bleeding can be mild or severe, and it can recur or persist until delivery.

Choice B reason: Intermittent abdominal pain following passage of bloody mucus is not a finding that supports placenta previa, but rather a finding that suggests normal labor or preterm labor. Intermittent abdominal pain is caused by uterine contractions, which can be regular or irregular, and can increase in frequency, duration, and intensity. Bloody mucus is the mucus plug that is expelled from the cervix as it dilates or effaces, and it can be tinged with blood or streaked with blood.

Choice C reason: Increasing abdominal pain with a nonrelaxed uterus is not a finding that supports placenta previa, but rather a finding that indicates abruptio placentae, which is a premature separation of the placenta from the uterine wall. Increasing abdominal pain is caused by the bleeding and the hematoma formation behind the placenta, which can compress the uterine muscle and the nerve endings. Nonrelaxed uterus is a sign of uterine hypertonicity, which can reduce the blood flow and the oxygen delivery to the fetus.

Choice D reason: Abdominal pain with scant red vaginal bleeding is not a finding that supports placenta previa, but rather a finding that suggests ectopic pregnancy, which is a condition where the fertilized ovum implants outside the uterine cavity, usually in the fallopian tube. Abdominal pain is caused by the rupture of the tube and the bleeding into the peritoneal cavity, which can irritate the diaphragm and the abdominal wall. Scant red vaginal bleeding is a sign of implantation bleeding, which can occur when the fertilized ovum attaches to the tube wall.