Effects of the correction of renal artery stenosis on blood pressure, renal function and left ventricular morphology

The aim of this study was to evaluate the effect of renal artery stenosis ( RAS) correction in hypertensive patients on 24 h SEP, 24 h DBP, creatinine clearance (GFR), urinary albumin excretion (UAE) and LV morphology and mass (LVMI). A total of 61 hypertensive patients With RAS undergoing PTRA and/o r surgical treatment entered the prospective study. The final analysis was done in 44 patients (age range 45.8 +/- 16.2 years) with RAS (atheroscleros is (ASC) 31 patients, :fibromuscular dysplasia (FMD) 12 patients, arteritis 1 patient) who underwent PTRA (34 patients) or surgical treatment (10 pati ents) and presented no Doppler signs of restenosis (or a new stenosis) duri ng 1-year observation. The pre-interventional assessment repeated after 6 a nd 12 months included ABPM, GFR, UAE and echocardiography. The results were analysed in the combined group (CG) and in according aetiology. 24 h SEP a nd 24 h DBP decreased in all groups 6 months post-intervention and did not change further. Cure of HT was observed in 35% and 29% of ASC patients at 6 and 12 months respectively; and in 58% of FMD patients. Failure rate at 12 months was 48% in ASC against 25% in FMD. The mean GFR in CG was higher 12 months after intervention. The increase in GFR was noted in 45% of patient s, the decrease in 25% of patients at 12 months. Normal values of UAE were found in 71% of patients, pre- and post-intervention alike. Mean LVMI and n umber of patients with LVH,in CG decreased already during the initial 6 mon ths post-intervention and did not change further. In conclusion, correction of RAS leads to cure of or improved control of hypertension in the majorit y of the patients with FMD, but in the ASC group in about half of cases no BP cure or improvement was seen. The renal function was improved or stable in two-thirds of patients after revascularization. Successful renal revascu larization was followed by regression of LVH, which was evident within 6 mo nths post-intervention.