*Anemia (3 points)
*Use of an intra-aortic balloon pump (5 points)
*Decreased real function. In terms of estimated glomerular filtration rate in ml/min::*eGFR 60 to 40 (2 points):*eGFR 40 to 20 (4 points):*eGFR less than 20 (6 points)
*Hypotension (5 points, if systolic BP less than 80 mmHg for at least one hour requiring inotropic support)
*Contrast media volume (1 point per 100 ml)