What condition is defined as new-onset hypertension and proteinuria after 20 weeks of gestation?

Preeclampsia is characterized by the development of new-onset hypertension and proteinuria after 20 weeks of gestation. This condition is a serious pregnancy complication that can affect both the mother and the fetus if not properly managed. The hypertension is typically defined as a blood pressure reading of 140/90 mm Hg or higher, while proteinuria indicates the presence of excess protein in the urine, which is a sign of kidney dysfunction associated with this condition.

Understanding the timing of the onset is crucial in defining preeclampsia; it is specifically associated with pregnancy after the 20-week mark, distinguishing it from chronic hypertension, which is present before pregnancy or diagnosed before the 20-week gestational period. Additionally, eclampsia is a severe progression of preeclampsia that includes seizures, highlighting the importance of early detection and management of preeclampsia to prevent severe complications for both mother and child.

In summary, the combination of new-onset hypertension and proteinuria occurring after 20 weeks of gestation is what firmly establishes the diagnosis of preeclampsia, making it the correct answer for this question.