Double-Blind Placebo-Controlled CIN Trial

This double-blinded placebo-controlled study will examine the incidence and significance of contrast-induced acute kidney injury following IV iodine-based contrast material administration in subjects with stage IIIB or stage IV chronic kidney disease. Subjects will be scheduled for clinically indicated CT of the abdomen and/or pelvis to evaluate for suspected intra-abdominal infection. Subjects will be randomized to receive either weight-based low-osmolality iodinated contrast material or saline. The primary outcome measure will be the incidence of stage II AKI by AKIN (Acute Kidney Injury Network) criteria.