Which criterion is essential for diagnosing gestational hypertension?

The diagnosis of gestational hypertension is primarily based on the presence of high blood pressure readings during pregnancy. Specifically, one of the key criteria is the measurement of blood pressure exceeding 140/90 mm Hg on two separate occasions, taken at least four hours apart. This criterion is critical because it provides a clear and objective standard for identifying hypertension in pregnant individuals, distinguishing it from other hypertensive disorders.

While other factors, such as gestational age and protein levels, are important in understanding the broader context of hypertensive disorders in pregnancy, they do not solely suffice for the diagnosis of gestational hypertension. For instance, proteinuria is an important sign in preeclampsia and other hypertensive conditions, but it is not essential for diagnosing gestational hypertension specifically. Likewise, postpartum blood pressure normalization and gestational age are factors that are relevant but do not directly pertain to the initial diagnostic criteria for this condition.

Thus, the emphasis on blood pressure measurements ensures that the diagnosis is grounded in reliable clinical evidence, allowing healthcare providers to appropriately manage and monitor the health of the pregnant individual and their fetus.