What additional finding would confirm a diagnosis of preeclampsia in a woman with elevated blood pressure?

To confirm a diagnosis of preeclampsia, the presence of elevated blood pressure must be accompanied by specific additional findings. In this instance, the correct answer involves a repeat blood pressure measurement showing hypertension along with proteinuria, which is a key diagnostic criterion for preeclampsia.

Elevated blood pressure alone does not confirm preeclampsia; it is crucial to demonstrate another condition such as proteinuria or evidence of organ dysfunction. The scenario that includes a blood pressure measurement of 145/92 mm Hg with 2+ protein on urine dipstick indicates both hypertension and proteinuria, thus satisfying the diagnostic criteria for preeclampsia.

In contrast, the other indices mentioned do not provide the correct combination for a preeclampsia diagnosis. Elevated liver transaminases, while they may indicate the severity of the condition, do not replace the need for proteinuria in the diagnosis. A postictal state from a seizure indicates a more severe complication (e.g., eclampsia) rather than preeclampsia without additional context. Lastly, a repeat blood pressure measurement showing continued hypertension without new symptoms does not confirm preeclampsia since it lacks the necessary proteinuria or signs of organ dysfunction.