ABSTRACT
An investigation of sphygmogram was carried out on 52 patients with middle type hypertensive syndrome and some normal women in late pregnancy were as the control. Their pregnancies were measured by a sphygmogram and the influence of pregnant hypertensive syndrome on the cardio-vas-cular system analyzed. It was found that left ventricular systolic force, cardial power and left ventricular effective work constant were stronger than those of the control. Meanwhile, myocardial energy invert constant decreased. This reflected the patients has compensative function in spite of increased myocardic load. In addition, pressure of peripheral arteries, blood volume of the patients, resistance and elasticmodulus of the artery were higher than those of the control, but capillary blood flow velocity decreased. Consequently, we have realized more about hemodynamic changes of hypertensive syndrome in pregnancy. And the authors consider that the sphygmogram may be used to detect changes of the cardio-vascular system of the patients with prcgancy toxemia and that the mean arterial pressure by a sphygmogram may reflect changes of hemodynamics better and earlier than a traditional sphygmomanometer. The sphygmogram may be used to make an early diagnosis of hypertensive syndrome.