Sepsis & infection

Effect of early adjunctive vasopressin initiation for septic shock patients: a target trial emulation

Crit CarePublished Target trial emulation

Main finding · Estimated 30-day ICU mortalityResult — go to the resultRelative risk 0.95 95% CI 0.93–0.98

Authors' conclusion

In this emulation of a hypothetical target trial, patients with septic shock benefited from early vasopressin administration.

Study context

Population
Patients with septic shock diagnosed within 6 h of intensive care unit (ICU) admission
Participants
3,105 patients
Exposure
Early adjunctive vasopressin vs usual care
Outcome
ICU mortality
Follow-up
30 days
Methodological detailsobservational cohort study, multicentre, parametric g-formula
  • Observational cohort study
  • Multicentre
  • Parametric g-formula

Main finding

Estimated 30-day ICU mortality

Relative risk

0.95

95% CI 0.93–0.98

By group

Early vasopressin vs No vasopressin
RR 0.95 (95% CI 0.93–0.98)

As reported in the abstract

Observational data: associations, not effects.

Secondary outcomes

30-day ICU mortality by norepinephrine dose at vasopressin start (subgroup)

Effect of starting vasopressin particularly strong at lower norepinephrine doses (< 0.25 µg.kg-1.min-1) and significant at doses lower than recommended by Surviving Sepsis Campaign Guidelines

Vasopressin administration over time

Vasopressin administration in 2015
35.2%
Vasopressin administration in 2021
45.1%
Change per year (ß; 95%CI + 0.46 to + 2.16, p = 0.011)
+ 1.3%

Norepinephrine equivalent dose and SOFA score at vasopressin start over time

Norepinephrine-equivalent dose (NED) change per year, µg.kg-1.min-1 (ß; 95%CI - 0.09 to - 0.002, p = 0.038)
- 0.05
Total SOFA score change per year, points (ß; 95%CI - 0.18 to - 0.07, p < 0.001)
- 0.1

Original publication

Effect of early adjunctive vasopressin initiation for septic shock patients: a target trial emulation. Crit Care. Published 12 May 2025. doi:10.1186/s13054-025-05401-y

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