Abstract
A pharmacokinetics study was conducted to determine the effects of ceftriaxone administered before nephrectomy on the occurrence of postoperative wound infection. Ceftriaxone was administered as antibiotic prophylaxis in 11 consecutive patients undergoing nephrectomy who received 1,000 mg intravenously 30 min before surgery. Simultaneous blood and tissue samples were collected at three stages of the surgical procedure: opening of the abdominal cavity, nephrectomy, and closure of the abdominal cavity. Samples of following tissues were assayed: abdominal-wall fat, perirenal fat, kidney cortex and medulla, and urine. During the different stages of surgical procedures, ceftriaxone concentrations remained higher than the MIC90 of the potential pathogens (Staphylococcus aureus, Escherichia coli, and Enterobacteriaceae). In selected patients undergoing nephrectomy and requiring antimicrobial prophylaxis such as malnourished, debilitated, diabetic or immunosuppressed patients, the use of a single dose of ceftriaxone (1,000 mg) makes it possible to offer an optimal bacterial coverage for the prevention of postoperative infection. According to our kinetic evaluation, ceftriaxone is potentially a good antibiotic for prophylaxis in urological surgery.
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