[Separate and summary renal hemodynamics in renovascular hypertension (before and after surgery)].

It was found that hypertension in patients with stenosis of the renal artery is of a renopressor character which is maintained by increased renin secretion by the kidney with the stenosed artery. High arterial hypertension is conducive to the maintenance of the function of the kidney with the stenosed artery at the most optimum level and has an effect on the contralateral kidney. After surgery (nephrectomy), in addition to normalization of arterial pressure the blood flow in the remaining kidney becomes almost equal to the blood flow in two kidneys, i.e. the remaining kidney compensates for the function of the removed kidney. The incidence of malignant course of arterial hypertension in combination of an occlusive lesion of the renal artery and pyelonephritis of this kidney is twice that in isolated stenotic lesion of the renal artery.