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Impact of an electronic sepsis initiative on antibiotic use and health care facility–onset Clostridium difficile infection rates

      Highlights

      • Electronic sepsis screening and treatment protocols may have unintended effects.
      • Unintended effects include increased antibiotic use and health care facility–onset Clostridium difficile infection (CDI).
      • We assessed these effects on 4 medicine wards in a large, tertiary, urban hospital.
      • Sepsis screening implementation coincided with increased antibiotic use and CDI.
      • Further study of unintended effects of sepsis screening is warranted.

      Background

      Although integrated, electronic sepsis screening and treatment protocols are thought to improve patient outcomes, less is known about their unintended consequences. We aimed to determine if the introduction of a sepsis initiative coincided with increases in broad-spectrum antibiotic use and health care facility–onset (HCFO) Clostridium difficile infection (CDI) rates.

      Methods

      We used interrupted time series data from a large, tertiary, urban academic medical center including all adult inpatients on 4 medicine wards (June 2011-July 2014). The main exposure was implementation of the sepsis screening program; the main outcomes were the use of broad-spectrum antibiotics (including 3 that were part of an order set designed for the sepsis initiative) and HCFO CDI rates. Segmented regression analyses compared outcomes in 3 time segments: before (11 months), during (14 months), and after (12 months) implementation of a sepsis initiative.

      Results

      Antibiotic use and HFCO CDI rates increased during the period of implementation and the period after implementation compared with baseline; these increases were highest in the period after implementation (level change, 50.4 days of therapy per 1,000 patient days for overall antibiotic use and 10.8 HCFO CDIs per 10,000 patient days; P < .05). Remarkably, the main drivers of overall antibiotic use were not those included in the sepsis order set.

      Conclusions

      The implementation of an electronic sepsis screening and treatment protocol coincided with increased broad-spectrum antibiotic use and HCFO CDIs. Because these protocols are increasingly used, further study of their unintended consequences is warranted.

      Key Words

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