Which factor is NOT included in the Mehran risk score for predicting contrast-induced nephropathy?

Which factor is NOT included in the Mehran risk score for predicting contrast-induced nephropathy?

• A. Hemoglobin A1c level.
• B. Age.
• C. Baseline creatinine.
• D. Diabetes.

Answer: (A)

The factor being tested is whether HbA1c is part of the Mehran CIN risk score. Mehran’s model uses variables that reflect acute kidney vulnerability and the physiological stress of contrast: advanced age, pre-existing renal dysfunction (baseline creatinine/creatinine clearance), diabetes, anemia (low hematocrit), hypotension, congestive heart failure, use of an intra-aortic balloon pump, and the amount of contrast used. Hemoglobin A1c, a marker of long-term glycemic control, is not included. The score focuses on immediate factors that predict contrast-induced nephropathy, which is why baseline renal function, age, and diabetes fit, while HbA1c does not.

The factor being tested is whether HbA1c is part of the Mehran CIN risk score. Mehran’s model uses variables that reflect acute kidney vulnerability and the physiological stress of contrast: advanced age, pre-existing renal dysfunction (baseline creatinine/creatinine clearance), diabetes, anemia (low hematocrit), hypotension, congestive heart failure, use of an intra-aortic balloon pump, and the amount of contrast used. Hemoglobin A1c, a marker of long-term glycemic control, is not included. The score focuses on immediate factors that predict contrast-induced nephropathy, which is why baseline renal function, age, and diabetes fit, while HbA1c does not.