Urine Hydrogen Peroxide Levels and Their Relation to Outcome in Patients with Sepsis, Septic Shock, and Major Burn Injury
2022
Miklos Lipcsey | Maria Bergquist | Rebecca Sirén | Anders Larsson | Fredrik Huss | Jay Pravda | Mia Furebring | Jan Sjölin | Helena Janols
Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) and oxidative stress have been suggested as possible instigators of both the systemic inflammatory response and the increased vascular permeability associated with sepsis and septic shock. We measured H<sub>2</sub>O<sub>2</sub> concentrations in the urine of 82 patients with severe infections, such as sepsis, septic shock, and infections not fulfilling sepsis-3 criteria, in patients with major burn injury with associated systemic inflammation, and healthy subjects. The mean concentrations of H<sub>2</sub>O<sub>2</sub> were found to be lower in patients with severe infections compared to burn injury patients and healthy subjects. Patients with acute kidney injury (AKI), vs. those without AKI, in all diagnostic groups displayed higher concentrations of urine H<sub>2</sub>O<sub>2</sub> (<i>p</i> < 0.001). Likewise, urine concentrations of H<sub>2</sub>O<sub>2</sub> were higher in non-survivors as compared to survivors (<i>p</i> < 0.001) at day 28 in all diagnostic groups, as well as in patients with severe infections and burn injury (<i>p</i> < 0.001 for both). In this cohort, increased H<sub>2</sub>O<sub>2</sub> in urine is thus associated with mortality in patients with sepsis and septic shock as well as in patients with burn injury.
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