Comparison of medical record data with pharmacy claims data is an effective indirect measure of patients' compliance with prescribed oral theophylline and inhaled anti-inflammatory agents. Additional interventions must be pursued for patients with asthma regarding adherence to regimens for their prescribed inhaled anti-inflammatory agents.
Comparison of medical record data with pharmacy claims data is an effective indirect measure of patients' compliance with prescribed oral theophylline and inhaled anti-inflammatory agents. Additional interventions must be pursued for patients with asthma regarding adherence to regimens for their prescribed inhaled anti-inflammatory agents.
Tazobactam is an irreversible inhibitor of many beta-lactamases. In combination with piperacillin, tazobactam exhibits synergy against many beta-lactamase-producing bacteria. The pharmacokinetics of piperacillin and tazobactam were evaluated in eight normal volunteers and in 52 patients with renal dysfunction. Plasma and urine were obtained for up to 30 hours after an infusion of piperacillin and tazobactam (3 and 0.375 gm, respectively). Dialysate samples were collected from patients undergoing dialysis. Piperacillin and tazobactam concentrations were determined by high-performance liquid chromatography. Noncompartmental methods were used for pharmacokinetic analysis. Piperacillin and tazobactam total body clearance, area under the curve, and terminal elimination rate correlated with renal function. Hemodialysis removed 31% and 39% of piperacillin and tazobactam, respectively. During continuous ambulatory peritoneal dialysis, 5.5% of the piperacillin and 10.7% of the tazobactam was recovered in the dialysate over 28 hours. Peak plasma concentrations of both drugs increased minimally with decreasing creatinine clearance. Dosage alterations for creatinine clearance values less than 40 ml/min are recommended.
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