What symptom is most characteristic of preeclampsia in a pregnant woman?

• A. Severe headache
• B. Proteinuria
• C. Elevated blood glucose
• D. Edema

Answer: (B)

Preeclampsia is a condition that develops during pregnancy, characterized by hypertension and organ dysfunction, and is specifically defined by the presence of elevated blood pressure combined with proteinuria or end-organ dysfunction. Among the symptoms associated with preeclampsia, proteinuria is a hallmark sign, as it indicates the involvement of the kidneys and the systemic effects of the disease.

In the context of preeclampsia, proteinuria reflects an impairment in kidney function due to the hypertensive state, and it can be measured through a urine dipstick test or a 24-hour urine collection showing significant levels of protein. The presence of protein in the urine signifies that the disease has progressed and increases the risk of complications for both the mother and fetus.

While severe headache, elevated blood glucose, and edema are noteworthy symptoms, they are not as definitive for diagnosing preeclampsia as proteinuria is. Severe headaches can result from various causes during pregnancy, elevated blood glucose levels are more commonly associated with gestational diabetes, and edema can be a normal physiological change in pregnancy. Thus, proteinuria stands out as the most characteristic symptom of preeclampsia.