Blood samples drawn for culture as a surrogate marker for case-mix adjustment of hospital antibiotic use |
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Authors: | F. Lamoth P. Francioli G. Zanetti |
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Affiliation: | Service of Infectious Deseases, Department of Medicine, University Hospital, Lausanne, Switzerland. Frederic.Lamoth@chuv.ch |
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Abstract: | Hospital antibiotic consumption is generally adjusted to occupancy. This study hypothesised that the number of blood culture samples could be a surrogate marker for case-mix adjustment. Antibiotic consumption was compared over 16 consecutive trimesters in one medical ward in terms of patient-days or blood culture samples. Compared with patient-days, measurement adjusted to blood culture samples detected three trimesters with an unusually high consumption, and one trimester with consumption falsely classified as high because of a high incidence of infections. Blood culture numbers enabled easy and accurate identification of periods with a drift in antibiotic consumption ina medical ward. |
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Keywords: | Antibiotic consumption blood cultures case-mix adjustment marker surveillance |
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