Ultra-Low Contrast Angiography in AKI

Inclusion Criteria: * Hospitalized patients who have AKI at admission or who develop AKI during admission and require invasive coronary angiography will be included in the trial. Exclusion Criteria: * Stabilized renal function manifested by unchanged or downtrending serum creatinine during a 24-hour period prior to enrollment. * Contraindication for invasive coronary angiography other than AKI. * Percutaneous coronary intervention is indicated and cannot be postponed by 7 days. * Need for renal replacement therapy before coronary angiography or planned renal replacement therapy after coronary angiography (if premeditated before coronary angiography). * Administration of intravascular contrast media during 7 days prior to the coronary angiography or within 6 days after coronary angiography. * Pregnant patients, prisoners, cognitively impaired subjects, age below 18 years, unable or unwilling to provide informed consent.