Effect of a Pre-interventional Diet on Renal Function After Administration of Contrast Agent in Patients at Risk

The aim of this study is to assess the effect of a diet prior to administration of contrast agent in terms of a preventive procedure which leads to an attenuation of the contrast-induced nephropathy (CIN). Patients with a known kidney disease are especially at risk. A potential beneficial effect of a diet prior to intervention has been shown in investigations in mammals, therefore this study will investigate if a pre-interventional diet in patients with known kidney disease and scheduled contrast agent examination can attenuate or prevent a post-interventional loss of kidney function.