Hypotension (SBP < 80 mmHg for ≥1 Hour Requiring IABP or Vasopressors Within 24h of Contrast)

No — SBP ≥ 80 mmHg or no vasopressor/IABP requirement+0Yes — SBP < 80 mmHg for ≥1h requiring IABP or vasopressors+5

Intra-Aortic Balloon Pump (IABP) Use

No IABP use+0Yes — IABP use peri-procedurally+5

Congestive Heart Failure (NYHA Class III–IV and/or History of Pulmonary Edema)

No CHF or NYHA Class I–II without recent pulmonary edema+0Yes — NYHA Class III–IV or history of pulmonary edema+5

Age

Age < 75 years+0Age ≥ 75 years+4

Anemia (Baseline Hematocrit < 39% in Men or < 36% in Women)

No anemia — Hct ≥ 39% (men) or ≥ 36% (women)+0Anemia — Hct < 39% (men) or < 36% (women)+3

Diabetes Mellitus

No diabetes+0Diabetes mellitus (Type 1 or Type 2)+3

Contrast Agent Volume

< 100 mL — Minimal contrast use+1100–200 mL — Moderate contrast use+2201–300 mL — High contrast use+3> 300 mL — Very high contrast use+4

Renal Function (Serum Creatinine or eGFR)

eGFR ≥ 60 mL/min/1.73m² (serum Cr < 1.5 mg/dL) — Normal/near-normal renal function+0eGFR 40–59 mL/min/1.73m² — Mildly decreased renal function+2eGFR 20–39 mL/min/1.73m² — Moderately decreased renal function+4eGFR < 20 mL/min/1.73m² or dialysis-dependent — Severely decreased renal function+6

Mehran Score — Contrast-Induced AKI Risk

Mehran Score — Contrast-Induced AKI Risk