Inclusion Criteria:  (1) Patients undergoing an interventional or diagnostic radiological procedure in which they receive intravascular contrast, including patients undergoing coronary angiogram +/- percutaneous coronary intervention (PCI) for all clinical indications except those indicated for primary PCI due to STEMI (2) patients presenting with a renal clearance in the range of less than 60 ml/min/1.73 m2 but not declared ESRD (3) Patients who are not yet recruited for other pharmacological or medical device clinical trials.  Exclusion Criteria:  (1) Age <18 years (2) Patient on hemodialysis or peritoneal dialysis (3) Simultaneous participation in another interventional study (4) Percutaneous coiling/embolization procedures of the kidney (5) Impossibility to perform RIPC, caused by pathology in both arms (e.g. dystrophy, recent trauma, chronic wounds) (6) No written informed consent (7) Urgent angiography in STEMI (8) Cardiogenic shock requiring catecholamine infusion (9) Systolic blood pressure <80 mmHg (10) Intra-aortic balloon counter-pulsation (11) Contrast medium injection within the previous 30 days (12) Expected impossibility to obtain follow-up data at 6-week follow-up (13) Patients with Raynaud's disease