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Int J Cardiol. 2005 Feb 15;98(2):331-5.

Valsartan versus ACE inhibition after bare metal stent implantation--results of the VALVACE trial.

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Department of Cardiology, Academic Teaching Hospital of Quedlinburg, University of Magdeburg, Germany.


The use of ACE inhibitors (ACE-i) represents an Ia recommendation in the treatment of patients with STEMI and NSTEMI. However, results of smaller studies suggest an increase of in-stent-restenosis under ACE-i administration. The effects of ACE-i and valsartan after bare metal stent implantation of the culprit type B2/C lesion should be compared. Seven hundred patients were treated either by ACE-i in cases of LVEF<50% or 80 mg valsartan in cases of LVEF> or =50%. Restenosis rates after 6 months were analysed in 399 patients under valsartan and 224 patients under ACE-i with control angiography and major adverse cardiac events (death, infarction, reintervention) in a follow-up of up to 4 (mean 2.6) years in all patients. In-stent-restenosis was found in 19.5% under valsartan and in 34% under ACE-i (p<0.005). In diabetic patients, restenosis occurred in 24% under valsartan and in 43% under ACE-i (p<0.01). In initial acute coronary syndrome (ACS), restenosis rate was 14% under valsartan and 43% under ACE-i (p<0.0001). In stable angina, restenosis rates were 26.5% and 27.5%, respectively. Total MACE rates revealed significant differences in ACS due to reintervention rates of 22% and 7% under ACE-i and valsartan (p<0.0001). The administration of 80 mg valsartan after bare metal stent implantation leads to a reduction of in-stent-restenosis compared to ACE-i. This effect is mainly due to beneficial effects of valsartan in cases with initial ACS. Major differences between ACE-i and valsartan are discussed including inflammation, activation of neutrophils, mode of bradykinin activation, AT2 receptor stimulation and apoptosis of smooth muscle cells.

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