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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.
QxMD Nephrology contributing author: Daniel Schwartz, MD, FRCP(C)