Abstract

To compare the effectiveness and mortality of early-onset sepsis or late-onset sepsis treatments with polymyxin B-immobilized fiber column direct hemoperfusion in terms of effectiveness and mortality in preterm infants with septic shock. Retrospective cohort study. Neonatal ICU within a tertiary care hospital. Of 1,115 patients, 49 had blood culture-proven sepsis between January 2013 and December 2018; six and five patients with septic shock had undergone polymyxin B-immobilized fiber column direct hemoperfusion treatment for early-onset sepsis (early-onset sepsis group) and late-onset sepsis (late-onset sepsis group), respectively. None. Baseline demographic characteristics of both groups were similar. The time from decision to treatment induction was significantly shorter in the early-onset sepsis group than that in the late-onset sepsis group (p = 0.008). The mortality rate after 28 days of treatment and the hospital mortality were significantly lower in the early-onset sepsis group than in the late-onset sepsis group (p = 0.026 and 0.015, respectively). The PaO2/FIO2 ratio was significantly higher in the early-onset sepsis group than in the late-onset sepsis group at the end of the treatment (p = 0.035). In addition, median arterial-to-alveolar oxygen tension ratio significantly improved from 0.19 to 0.55, and median blood pressure also significantly improved from 32.5 to 40.0 mm Hg after the treatment in the early-onset sepsis group. Interleukin-6 levels significantly decreased after treatment in the early-onset sepsis group (p = 0.037). The Pediatric Risk of Mortality III score was similar between the early-onset sepsis and late-onset sepsis groups before and after the treatment. Intraventricular hemorrhage events occurred in both groups, but with no significant differences (p = 0.175). Polymyxin B-immobilized fiber column direct hemoperfusion treatment for preterm infants with septic shock due to early-onset sepsis is associated with earlier hemodynamic and respiratory status improvements and with lower mortality than that due to late-onset sepsis. Early neonatal septic shock detection and polymyxin B-immobilized fiber column direct hemoperfusion induction may improve the prognosis of affected infants.

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