• Phuong Hoang Nguyen, Kayla Ashley Fay, Jada Mae English, and GillHarman SinghHS0000-0002-2467-9199Geisel School of Medicine at Dartmouth, 1 Rope Ferry Road, Hanover, NH, 03755, USA. Harman.S.Gill@hitchcock.org.Department of Medicine, Section of Pulmonary & Critical Care Medicine, Dartmouth-Hitchcock Medical Center,.
• Geisel School of Medicine at Dartmouth, 1 Rope Ferry Road, Hanover, NH, 03755, USA.
• Intern Emerg Med. 2024 Jun 1; 19 (4): 109911071099-1107.

AbstractUsing scoring systems in discreet microbiologic cohorts in a serial fashion to identify unique phenotypes of sepsis remains unknown. Single-center, retrospective study that screened adults who triggered the hospital's SIRS (systemic inflammatory response syndrome) based sepsis alert into culture positive (Cx +) and culture negative (Cx-) groups. Subgroups were based on the location where the SIRS alert fired. SIRS scores and a novel score called SEP were calculated at t = 0 and at 3, 6, 12, and 24 h before and after t = 0. Primary outcome was a difference in SIRS/SEP scores in Cx + or Cx- groups over time. Secondary outcomes were differences in total SIRS/SEP scores and the components constituting SIRS/SEP scores at various locations over time. The study contained 7955 patients who met inclusion criteria. Cx + and Cx- groups had increases in SIRS/SEP scores and at similar rates starting 6 hours before t = 0. Both culture groups had decreasing SIRS/SEP scores, at varying gradients compared to the change in SIRS/SEP scores seen prior to t = 0. This pattern in SIRS/SEP scores before and after t = 0 was consistent in all location subgroups. Statistically significant differences were seen in the overall SIRS/SEP scores for Cx + and Cx- groups at hours 6, 12, and 24 after t = 0, in the ED group at t = 24 h after t = 0, the floor group at t = 0 h, and in the step-down group at t = 3 h after t = 0 h. Microbiological cohorting and serial assessments may be an effective tool to identify homogenous phenotypes of sepsis.© 2024. The Author(s), under exclusive licence to Società Italiana di Medicina Interna (SIMI).

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