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  • Title: Long-term follow-up of atherosclerotic renovascular disease. Beneficial effect of ACE inhibition.
    Author: Losito A, Errico R, Santirosi P, Lupattelli T, Scalera GB, Lupattelli L.
    Journal: Nephrol Dial Transplant; 2005 Aug; 20(8):1604-9. PubMed ID: 15870215.
    Abstract:
    BACKGROUND: Patients with atherosclerotic renovascular disease (ARVD) are almost invariably treated by revascularization. However, the long-term outcomes of this approach on survival and progression to renal failure have not been investigated and have not been compared with that of a purely medical treatment. The aim of this observational study was to investigate factors affecting long-term (over 5 years) outcome, survival and renal function of patients with ARVD treated invasively or medically. METHODS: ARVD was demonstrated angiographically in 195 patients who were consecutively enrolled into a follow-up study. Patient age was 65.6+/-11.2 years, serum creatinine was 1.74+/-1.22 mg/dl and renal artery lumen narrowing was 73.5+/-17.5%. A revascularization was performed in 136 patients, whereas 54 subjects having comparable characteristics were maintained on a medical treatment throughout the study; five patients were lost during follow-up. RESULTS: The main follow-up was 54.4+/-40.4 months. The assessment of cardiovascular survival and renal survival at the end of follow-up revealed 46 cardiovascular deaths, 20 patients with end-stage renal disease (ESRD) and 41 patients with an increase in serum creatinine of over one-third. The multivariate analysis showed that renal revascularization did not affect mortality or renal survival compared with medical treatment. Revascularization produced slightly lower increases in serum creatinine and a better control of blood pressure. A longer survival was associated with the use of angiotensin-converting enzyme inhibitors (ACEIs) (P = 0.002) in both revascularized and medically treated patients. The only significant predictor of ESRD was an abnormal baseline serum creatinine. CONCLUSIONS: On long-term follow-up, ARVD was associated with a poor prognosis due to a high cardiovascular mortality and a high rate of ESRD. In our non-randomized study, revascularization was not a major advantage over medical treatment in terms of mortality or renal survival. The use of ACEIs was associated with improved survival.
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