Abstract

The duration of infusion may influence the plasma drug level, thereby influencing effectiveness and toxicity. Intravenous amikacin (AMK) should not be given as a bolus. Instead, it is recommended to be administered via intermittent infusion over 30–60 minutes. This study aimed to determine differences in the estimated pharmacokinetic (PK)/pharmacodynamic parameters of AMK when administered via 30- versus 60-minute infusions, as well as the relationship with outcomes and toxicity. The data for this study were gathered from the medical records of adult inpatients treated with AMK at Dr Sardjito Hospital in Yogyakarta. Due to the lack of therapeutic drug monitoring, blood AMK levels were estimated using a pharmacokinetic formula. The results demonstrated that the duration of AMK infusion had an impact on the estimated AMK levels (Cmax, Cmin, and maximum concentration/minimum inhibitory concentration ratio). Estimated AMK Cmax and Cmin showed a significant correlation with mortality and signs of toxicity, and Cmin of

Key words: Amikacin; Duration of Infusion; Estimated blood level; Outcome; Toxicity