Hypertensive diseases in pregnancy

During pregnancy, progesterone causes a drop in blood pressure. Physiologically, this can be attributed on the one hand to the increase in venous vascular capacity (dilatation of the vascular system with still insufficient increase in maternal blood volume) and on the other hand to insufficient venous return of blood to the heart. During physiological pregnancy, blood pressure drops by about 10 mmHg. The lowest pressure is reached around the 24th week of pregnancy. Low resting blood pressure is not pathological, but only an accompanying symptom in pregnancy.