Pregnancy-induced hypertension what harm?

Women pregnancy 24 weeks after or before labor, Appeared to hypertension, edema and proteinuria performance, known as pregnancy-induced hypertension. There are serious convulsion, coma, heart failure. Pregnancy-induced hypertension serious threat to the lives of mother and infant, but also may cause side effects, serious impact on women's health.
The incidence of this disease is unknown, most scholars believe that: pregnancy is high because of high blood in the more - is working. Late pregnancy, fetal increased uterine tension increased, more young tight early maternal abdominal wall, uterine blood corresponding shortage of supply, so that the phenomenon of uterine placental ischemia are due to stimulate uterine ischemia in vivo increased renin secretion of the protease, thus consequential hypertension. Serious uterine relative ischemia, or blood pressure higher. The standard for the diagnosis of hypertension: systolic blood pressure in the 17.3 to 18.7 kPa (130 ~ 140 mm Hg) over diastolic pressure of 12 kPa (90 mm Hg) and above. There are other reasons arising from pregnancy-induced hypertension, such as pregnancy caused due to systemic immune system and the endocrine system of some changes.
Pregnancy-induced hypertension due to systemic arterial spasm of small organs that produce lesions.
(1) brain: the brain artery spasm, cause ischemic brain tissue, edema, dizziness, headache, nausea, vomiting and convulsions and other symptoms, serious brain vasoconstriction with blood clots, bleeding in point, these patients often can cause coma.
(2) kidney: renal ischemia, thrombosis resulting capillary impaired renal function, may cause oliguria, proteinuria, there can be serious renal failure.
(3) Heart: Cardiac coronary insufficiency, cardiac ischemia can, edema and hemorrhage and necrosis points. As peripheral arterial spasm, the resistance increased, heart burden, there will be the left heart failure.
(4) liver: severe pregnancy-induced hypertension, can cause liver surface bleeding, while upper abdominal discomfort, severe hematoma was formed, and even liver bleeding.
(5) eye: retinal arterioles cramps, as well as a high degree of ischemic edema, a vertigo, blurred vision, can cause serious temporary blindness.
Pregnancy-induced hypertension can cause systemic changes in the organ, timely diagnosis and treatment should be found, so as to avoid adverse consequences.