Sepsis & infection

Early norepinephrine for patients with septic shock: an updated systematic review and meta-analysis with trial sequential analysis

Crit CarePublished Systematic review and meta-analysis of randomised trials, propensity-score matched and observational studies

Authors' conclusion

Early norepinephrine introduction in septic shock is associated with reduced mortality, decreased fluid volume administered at 6 h, faster time to achieve MAP target and more mechanical ventilation-free days.

Study context

Population
Adults with septic shock
Participants
4,767 adults · 10 studies
Comparison
Early vs non-early norepinephrine initiation
Outcome
ICU mortality
Methodological detailstrial sequential analysis, random-effect model, subgroup analysis
  • Trial sequential analysis
  • Random-effect model
  • Subgroup analysis

Pooled result

As reported in the abstract

Early vs Non-earlyOdds ratio (95% CI)P value
RCT; I2 = 45%
0.49(0.25–0.96)
P = 0.04
Pooled RCT and PSM; I2 = 74%
0.65(0.42–0.99)
P = 0.05
Observational studies; I2 = 66%
0.71(0.54–0.94)

Further pooled results

OutcomeMean difference (mL) (95% CI)P value
Fluid volume received · 6 hRCT + PSM; I2 = 91%−502 (−899 to −106)P = 0.01
OutcomeMean difference (h) (95% CI)P value
Time to MAP targetRCT + PSM; I2 = 0%−1.30 (−1.75 to −0.85)P < 0.01
OutcomeMean difference (days) (95% CI)P value
Mechanical ventilation-free daysRCT + PSM; I2 = 32%3.99 (2.42–5.57)P < 0.01
OutcomeMean difference (mcg/kg) (95% CI)P value
Cumulative norepinephrine doseObservational; I2 = 0%−3.44 (−6.13 to −0.76)P = 0.01

ICU mortality by subgroup (lactate ≤ 3mmol/L; administered within 1 h)

Reduced mortality with early norepinephrine when lactate was ≤ 3mmol/L and administered within 1 h

Original publication

Early norepinephrine for patients with septic shock: an updated systematic review and meta-analysis with trial sequential analysis. Crit Care. Published 6 May 2025. doi:10.1186/s13054-025-05400-z

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