Which maternal complication is characterized by high blood pressure after 20 weeks of gestation?

The correct answer indicates gestational hypertension as a maternal complication characterized by high blood pressure that develops after 20 weeks of gestation. This condition is specifically identified when a woman, who did not have high blood pressure prior to pregnancy, presents with elevated blood pressure readings during this time frame.

Gestational hypertension is diagnosed when blood pressure reaches 140/90 mmHg or higher on two occasions, at least four hours apart, after the 20th week of pregnancy. This condition is important to monitor because it can progress to more severe forms of hypertension, such as preeclampsia.

The distinction is crucial since gestational hypertension generally does not involve protein in the urine or other systemic findings associated with preeclampsia. Understanding the timing and definition of gestational hypertension is vital for providing appropriate prenatal care and monitoring for potential complications as pregnancy progresses.