Mild chronic hypertension in pregnancy: to treat or wait?[Formula: see text].

CONTEXT : The optimal blood pressure (BP) targets during pregnancy in women with pre-existing (i.e. chronic) or new (after the 20th week, i.e. gestational) hypertension remain by and large empirically determined. Indeed, the evidence of different international guideline recommendations for antihypertensive treatment in pregnancy is mainly based on expert opinions. While in pregnant women with severe hypertension, the benefits of pharmacological BP-lowering treatment were clear, no evidence in pregnant women with mild hypertension was available until recently [...