Figure 1 shows the trial profile. 267 patients were assessed for eligibility but 153 did not fulfill entry criteria of impaired renal function, six patients were on chronic hemodialysis program and eight patients did not agree to the protocol. A total of 100 patients (mean age 73.2±9.1 years, 71 men, 29 women) were included. Of these patients, 50 were randomly allocated to receive standard therapy (control-group), and 50 to receive standard therapy plus ischemic preconditioning (IPC-group). None of the patients were excluded after randomization. Table 1 shows demographical, angiographical and clinical characteristics of the different treatment arms. The calculated risk score suggested an equal probability to develop CI-AKI in both groups.8 On admission, the baseline serum creatinine concentration was > 1.4 mg/dL (> 124 μmol/L) in 86 patients (47 IPC-group vs. 39 control-group) and eGFR was below 60 mL/min/1.73 m² in all 100 patients. Patients with IPC received larger amounts of contrastmedium due to a higher rate of percutaneous interventions (PCI) in this group (control-group 103±41 mL vs. IPC-group 124±44 mL). The cardiovascular medication was similar in both groups (Table 2). Loop diuretics were withdrawn periprocedural and started the day after CA again. In 40 subjects (40%), 19 subjects (38%) in the control group and 21 (42%) in the IPCgroup, loop diuretics were given due to heart failure symptoms. Overall, the primary study endpoint, contrast-medium-induced nephropathy, occurred in 26 patients: six subjects (12%) in the IPC-group versus 20 subjects (40%) in the control-group