Sepsis & infection

Impact of pre-ICU balanced crystalloids versus saline on mortality in sepsis: a propensity score-matched multicenter cohort study

ChestPublished Retrospective cohort study

Main finding · 30-day mortalityResult — go to the resultAdjusted odds ratio 0.69 95% CI 0.56–0.83

Authors' conclusion

Pre-ICU administered balanced crystalloid use was associated with lower 30-day mortality in patients with sepsis than saline.

Study context

Population
Adults with sepsis receiving initial fluid resuscitation before intensive care unit (ICU) admission, September 2019–December 20231,335 per group matched
Participants
3,688 adults
Exposure
Pre-ICU balanced crystalloids vs saline
  • Balanced crystalloidn = 1,381
  • Salinen = 2,307reference
Outcome
30-day mortality
Follow-up
30 days
Methodological detailsnationwide multicentre, propensity-score matched, inverse probability of treatment weighting
  • Nationwide multicentre
  • Propensity-score matched
  • Inverse probability of treatment weighting

Main finding

As reported in the abstract

Adjusted odds ratio

0.69

95% CI 0.56–0.83

Balanced crystalloid vs Saline
aOR 0.69 (95% CI 0.56–0.83)

Observational data: associations, not effects.

Further findings

30-day mortality, inverse probability of treatment weighting (sensitivity analysis)

Finding consistent after inverse probability of treatment weighting: aOR
0.78 (95% CI 0.69-0.88)

30-day mortality by subgroup (subgroup)

Association consistent across age, sex, disease severity, liberal fluid management (pre-ICU fluid volume >30 mL/kg) and pre-ICU vasopressor use
Lower mortality risk with balanced crystalloids in patients without CKD, fluids in ED or ward (vs operating room or other ICU), baseline chloride ≤110 mmol/L and baseline pH <7.35

Renal replacement therapy and ventilator-free days

Balanced crystalloids associated with reduced need for CRRT during ICU stay, reduced RRT at ICU discharge and increased 28-day ventilator-free days

Original publication

Impact of pre-ICU balanced crystalloids versus saline on mortality in sepsis: a propensity score-matched multicenter cohort study. Chest. Published 19 September 2026. doi:10.1016/j.chest.2026.09.008

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