[Behavior of blood pressure, renal plasma flow and renal vein renin activity in renovascular hypertensive patients before and after PTA]. / Verhalten von Blutdruck, renalem Plasmafluss und renalvenöser Reninaktivität bei renovaskulären Hypertonikern vor und nach PTA.

Percutaneous transluminal angioplasty (PTA) is more and more accepted for interventional management of renal artery stenosis in hypertensive patients. This study was carried out to assess the behaviour of arterial blood-pressure, renal plasma flow and renal venous renin activity in renovascular hypertension following catheter dilatation. Using the data the possibility is calculated to predict the effect of PTA on blood pressure preinterventionally. The results demonstrate that a successful employment of PTA depends on a normal contralateral renal plasma flow and a normalization of plasma flow of the post-stenotic kidney. Determination of plasma renin activity is only of restricted value.