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Use this calculator to calculate the risk of contrast nephropathy after PCI.
About this calculator
This calculator measures the risk of contrast nephropathy post-percutaneous intervention, as per Mehran et al (2004). In that study, patients were given IV half-normal saline at a rate of 1 ml/kg/h for 4 to 12 hours before PCI and 18 to 24 hours after PCI. Definitions: contrast-induced nephropathy is defined as an increase of more than 25%, or more than 0.5 mg/dL, or more than 44 micromol/L, in pre-PCI serum creatinine at 48 hours after PCI. Anemia is defined as a baseline hematocrit value of less than 39% for men and less than 36% for women. Hypotension is defined as systolic blood pressure of less than 80 mmHg for at least 1 hour requiring inotropic support with medications or intra-aortic balloon pump (IABP) within 24 hours periprocedurally. For simplicity, our calculator asks whether the systolic blood pressure is less than 80 mmHg. Congestive heart failure is defined as a heart condition which fulfills the NYHA III or IV or prior pulmonary edema.
Mehran R, Aymong ED, Nikolsky E, Lasic Z, Iakovou I, Fahy M, Mintz GS, Lansky AJ, Moses JW, Stone GW, Leon MB, Dangas G. A simple risk score for prediction of contrast-induced nephropathy after percutaneous coronary intervention: development and initial validation. J Am Coll Cardiol 44(7):1393-9. (2004)
QxMD Nephrology contributing author: Daniel Schwartz, MD, FRCP(C)