Preoperative renal failure predictors

Preoperative isolated systolic blood pressure hypertension and wide pulse pressure are strong independent predictors of postoperative renal dysfunction. The incidence and severity of ARF usually are greater when the preoperative serum creatinine level is greater than 2 mg/dL. Need for radiocontrast, volume depletion, aminoglycoside use, NSAIDs, septic shock, and pigmenturia are also risks. Note that diabetic patients with renal insufficiency are especially vulnerable to radiocontrast agents.