Abstract
AIM: This study aimed to investigate the association of early vasopressor initiation with improved septic shock outcomes. METHODS: This multicenter observational study was conducted in 17 intensive care units in Japan and included adult patients with sepsis admitted to the intensive care unit from July 2019 to August 2020 and treated with vasopressor therapy. Patients were divided into the early vasopressor group (≤1 h from sepsis recognition) and the delayed vasopressor group (>1 h). The impact of early vasopressor administration on risk-adjusted in-hospital mortality was estimated using logistic regression analyses adjusted by an inverse probability of treatment weighting analysis with propensity scoring. RESULTS: Among the 97 patients, 67 received vasopressor therapy within 1 h from sepsis recognition and 30 received vasopressor after 1 h. In-hospital mortality was 32.8% in the early vasopressor group and 26.7% in the delayed vasopressor group (p = 0.543). The adjusted odds ratio for in-hospital mortality was 0.76 (95% confidence interval 0.17-3.29) when comparing patients in the early vasopressor with those in the delayed vasopressor group. The fit curve from the mixed-effects model showed a relatively lower trend toward an infusion volume over time in the early vasopressor group than in the delayed vasopressor group. CONCLUSION: Our study did not reach a definitive conclusion for early vasopressor administration. However, early vasopressor administration may help avoid volume overload in the long course of sepsis care.