Remote ischemic preconditioning is a procedure, which protects remote tissues and organs e.g. against ischemia-reperfusion injury. Cycles of forearm or leg ischemia and reperfusion by the inflation of a blood-pressure cuff for brief periods are the preferred method.The aim of this interventional clinical study is to determine whether remote ischemic preconditioning can reduce markers of myocardial injury in emergent or urgent non-cardiac surgery.