Abstract Background Early appropriate antibiotic treatment is essential in sepsis. We aimed to evaluate the impact of a multifaceted educational intervention to improve antibiotic treatment. We hypothesized that the intervention would hasten and improve the appropriateness of empirical antibiotic administration, favor de-escalation, and decrease mortality. Methods We prospectively studied all consecutive patients with sepsis/septic shock admitted to 72 intensive care units (ICUs) throughout Spain in two 4-month periods (before and immediately after the 3-month intervention). We compared process-of-care variables (resuscitation bundle and time-to-initiation, appropriateness, and de-escalation of empirical antibiotic treatment) and outcome variables between the two cohorts. The primary outcome was hospital mortality. We analyzed the intervention’s long-term impact in a subset of 50 ICUs. Results We included 2628 patients (age 64.1 ± 15.2 years; men 64.0%; Acute Physiology and Chronic Health Evaluation (APACHE) II, 22.0 ± 8.1): 1352 in the preintervention cohort and 1276 in the postintervention cohort. In the postintervention cohort, the mean (SD) time from sepsis onset to empirical antibiotic therapy was lower (2.0 (2.7) vs. 2.5 (3.6) h; p = 0.002), the proportion of inappropriate empirical treatments was lower (6.5% vs. 8.9%; p = 0.024), and the proportion of patients in whom antibiotic treatment was de-escalated was higher (20.1% vs. 16.3%; p = 0.004); the expected reduction in mortality did not reach statistical significance (29.4% in the postintervention cohort vs. 30.5% in the preintervention cohort; p = 0.544). Gains observed after the intervention were maintained in the long-term follow-up period. Conclusions Despite advances in sepsis treatment, educational interventions can still improve the delivery of care; further improvements might also improve outcomes.
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