Diagnostic features and efficiency of balloon angioplasty in patients with renovascular hypertension

Abstract

We observed 32 patients with vasorenal hypertension; the balloon angioplasty of renal arteries was performed in all patients; in 5 cases with stenting of artery. The 24-hours monitoring of blood pressure (by Korotkov method), functional renal indices, ultrasonic investigation of heart, kidneys and renal arteries and angiography of renal arteries were carried out before and after balloon angioplasty, in 3, 6 and 12 months. Our study shows the opportunity and expediency of continuous wave Doppler (CWD) as a qualitative non-invasive method of diagnostical screening and may be of great value in assessment of results of renal arteries angioplasty. We observed a strong correlation between blood pressure gradients, getting from CWD, and results of direct intra-arterial blood pressure measuring during the angioplasty. The analysis of ultrasonographical findings revealed satisfactory hipotensive effect of renal artery angioplasty, which has sustained during one year of observation. The tendency to decrease of thickness of the interventricular septum and the inferior wall of left ventricle was marked. In patients with critical stenosis of renal arteries, complicated with renal functions insufficiency, after successful balloon angioplasty we observed significant increase of glomerular filtration, evaluated by clearance of endogenic creatinin. Also, we marked the augmentation of volumeric sizes of stenosis-related kidney in 12 months after angioplasty.