Renal artery stenting in patients with chronic ischemic heart disease

Carlo Trani, Antonella Tommasino, Maura Giammarinaro, Francesco Burzotta, Santiago Federico Coroleu, Vittoria Rufini, Mario Attilio Mazzari, Italo Porto, Giampaolo Niccoli, Antonio Maria Leone, Rocco Mongiardo, Francesca Augusta Gabrielli, Giovanni Schiavoni, Giancarlo Biamino, Filippo Crea
Catheterization and Cardiovascular Interventions 2010 July 1, 76 (1): 26-34

OBJECTIVES: To investigate the role of renal stenting in selected patients with chronic ischemic heart disease and renal artery stenosis.

METHODS: Consecutive patients, with chronic ischemic heart disease and severe hypertension and/or impaired renal function undergoing renal stenting, were prospectively enrolled. Mid-term (at least 2 years) follow-up was performed to assess both changes in renal function [serum creatinine and estimated glomerular filtrate rate (eGFR)] and blood pressure (BP) control (number of required drugs) and to record the incidence of clinical major adverse events. Moreover, in the first consecutive 24 patients, out-of-range pressure values at 24-hr BP monitoring and GFR at renal scintigraphy were measured at baseline and 1 month after stenting.

RESULTS: Seventy patients treated by stenting on 86 renal arteries entered the study. Procedural success rate was 99% and no major complication occurred. At 2-year follow-up, both mean serum creatinine (-0.1 +/- 0.7 mg/dl at follow-up compared to baseline, P = 0.6) and eGFR (+3.7 +/- 23.5 ml/min/1.73m(2) at follow-up compared to baseline, P = 0.2) did not significantly change while the number of drugs required to control BP significantly decreased (2.7 +/- 0.8 to 2.2 +/- 0.7, P < 0.0001). In the subset of 24 patients evaluated at 1 month, GFR significantly increased (62 +/- 20 ml/min to 67 +/- 21 ml/min; P = 0.008) and the rate of the out-of-range systolic pressure values at 24-hr monitoring significantly decreased (51-33%, P = 0.005). Elevated baseline creatinine values and the presence of global renal ischemia were identified as predictors of poor outcome at the multivariate analysis.

CONCLUSIONS: In selected patients with chronic ischemic heart disease and hypertension and/or renal insufficiency, renal stenting may be performed with very low periprocedural complications and results in unchanged renal function and improved BP control.

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