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[Unexpected complication of anticoagulation after implantation of a coronary stent].

After stent implantation there is a high risk of acute stent thrombosis. Therefore, a very aggressive anticoagulation drug regimen is necessary. Two patients developed large hematomas of the upperarm that where presumably caused by automatic blood pressure measuring equipment or by a tourniquet used during blood collection. In one patient a complete paralysis of the ulnar and radial nerves resulted.