• Stephanie P Taylor, Marc A Kowalkowski, Sable Skewes, and Shih-Hsiung Chou.
• Division of Hospital Medicine, Department of Internal Medicine, University of Michigan, Institute for Health Policy and Innovation, University of Michigan, Ann Arbor, MI.
• Crit. Care Med. 2024 Jul 1; 52 (7): 100210061002-1006.

ObjectiveTo evaluate real-world implications of updated Surviving Sepsis Campaign (SSC) recommendations for antibiotic timing.DesignRetrospective cohort study.SettingTwelve hospitals in the Southeastern United States between 2017 and 2021.PatientsOne hundred sixty-six thousand five hundred fifty-nine adult hospitalized patients treated in the emergency department for suspected serious infection.InterventionsNone.Measurements And Main ResultsWe determined the number and characteristics of patients affected by updated SSC recommendations for initiation of antibiotics that incorporate a risk- and probability-stratified approach. Using an infection prediction model with a cutoff of 0.5 to classify possible vs. probable infection, we found that 30% of the suspected infection cohort would be classified as shock absent, possible infection and thus eligible for the new 3-hour antibiotic recommendation. In real-world practice, this group had a conservative time to antibiotics (median, 5.5 hr; interquartile range [IQR], 3.2-9.8 hr) and low mortality (2%). Patients categorized as shock absent, probable infection had a median time to antibiotics of 3.2 hours (IQR, 2.1-5.1 hr) and mortality of 3%. Patients categorized as shock present, the probable infection had a median time to antibiotics 2.7 hours (IQR, 1.7-4.6 hr) and mortality of 17%, and patients categorized as shock present, the possible infection had a median time to antibiotics 6.9 hours (IQR, 3.5-16.3 hr) and mortality of 12%.ConclusionsThese data support recently updated SSC recommendations to align antibiotic timing targets with risk and probability stratifications. Our results provide empirical support that clinicians and hospitals should not be held to 1-hour targets for patients without shock and with only possible sepsis.Copyright © 2024 by the Society of Critical Care Medicine and Wolters Kluwer Health, Inc. All Rights Reserved.

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