Evaluation of Vancomycin Treatment of Infections Due to Staphylococcus Aureus

Objective: The objective of the study is to evaluate the ability of current vancomycin dosing strategies to attain the pharmacodynamic target of an area under the curve (AUC) to minimum inhibitory concentration (MIC) ratio greater than 400:1 for patients with a suspected or documented Staphylococcus aureus infection. Primary Outcome: The primary outcome is the percentage of vancomycin dosing regimens that achieve AUC:MIC ratio \> 400 on the first occurrence of vancomycin use in patients with a suspected or documented S. aureus infection at The Nebraska Medical Center. Secondary Outcomes: 1. To assess the probability that vancomycin AUC:MIC ratios obtained from The Nebraska Medical Center patients exceed a therapeutic threshold using S. aureus MICs from isolates obtained from The Nebraska Medical Center. 2. Using MIC data from the TRUST Study database (large national surveillance database) and the vancomycin AUC data obtained from TNMC patients, perform a Monte Carlo analysis that will assess the probability of achieving a therapeutic vancomycin threshold with a large number of isolates.