Mehran score for contrast nephropathy after PCI
Risk of contrast-induced nephropathy and dialysis after coronary intervention.
Inputs
1 of 2Hypotension (SBP below 80 for 1 h needing support)
Intra-aortic balloon pump
Heart failure (NYHA III–IV or pulmonary edema)
Age over 75
Anemia (Hct below 39% men, 36% women)
Diabetes
mL
eGFR (mL/min/1.73 m²)
When to use
- Before or after PCI.
Pearls and pitfalls
- Prevention: IV isotonic fluids in higher-risk patients, minimize contrast volume, hold nephrotoxins.
Why use
Quantifies a modifiable risk.
| Criterion | Points |
|---|---|
| Hypotension (SBP below 80 for 1 h needing support) | +5 |
| Intra-aortic balloon pump | +5 |
| Heart failure (NYHA III–IV or pulmonary edema) | +5 |
| Age over 75 | +4 |
| Anemia (Hct below 39% men, 36% women) | +3 |
| Diabetes | +3 |
| eGFR (mL/min/1.73 m²): 60 or higher | 0 |
| 40–60 | +2 |
| 20–40 | +4 |
| Below 20 | +6 |