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- David Hardung, Andrea Behne, Mehmet Boral, Carsten Giesche, and Ralf Langhoff.
- Department of Angiology, Sankt Gertrauden Hospital, BerlinUniversity Hospital for Angiology, Brandenburg Medical School Theodor Fontane,Campus Hospital Center Brandenburg an der Havel.
- Dtsch Arztebl Int. 2021 Aug 9; 118 (31-32): 528-535.
BackgroundPatients with peripheral arterial occlusive disease (PAOD) are at ele - vated risk for cardiovascular events and vascular events affecting the limbs. The goals of antithrombotic treatment are to keep vessels open after revascularization, to prevent cardiovascular events, and to lessen the frequency of peripheral ischemia and of amputation.MethodsThis review is based on pertinent publications retrieved by a selective literature search, with particular attention to meta-analyses, randomized controlled trials, and the German and European angiological guidelines.ResultsDiabetes mellitus and nicotine abuse are the main risk factors for lower limb PAOD. The evidence for the efficacy and safety of antithrombotic treatment in patients with PAOD is limited, in particular, after surgical or endovascular revascularization. Intensifying antithrombotic treatment with stronger antiplatelet therapy (APT), dual antiplatelet therapy (DAPT), or antiplatelet therapy combined with anticoagulation lowers the rate of peripheral revascularization (relative risk [RR] 0.89; 95% confidence interval [0.83; 0.94]), amputation (RR 0.63; [0.46; 0.86]), and stroke (RR 0.82; [0.70; 0.97]) but raises the risk of bleeding (RR 1.23; [1.04; 1.44]). Pre - dictors for peripheral vascular events include critical limb ischemia and having previously undergone a revascularization procedure or an amputation.ConclusionAntiplatelet therapy should only be intensified for a limited time, or if the risk of ischemia is high. Before and during intensified antiplatelet therapy, the risk of bleeding should be assessed and weighed against the risk of ischemia. No validated score is available to estimate the risk of hemorrhagic complications in patients with PAOD. New antithrombotic therapies should not be used indiscriminately, but should rather be reserved for selected groups of patients.
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