BACKGROUND:Nucleated red blood cells (NRBCs) in the blood of critically ill patients are associated with increased mortality. The predictive value of NRBCs among septic critically ill patients remains indistinct. The aim of the present analysis was to evaluate the predictive validity of NRBCs in septic critically ill patients. METHODS:Data from septic critically ill patients were collected between 2020 and 2023. Daily NRBC values were recorded, and their predictive validity for mortality was statistically analysed. A cut-off level based on the maximum NRBC value during the patients' intensive care unit (ICU) stay was determined using ROC analysis and Youden's method. Survival was depicted using Kaplan-Meier curves. RESULTS:465 septic critically ill patients were analysed. Patients who died had significantly higher maximum NRBC values during their ICU stay compared to survivors (290/µL [60/2010] vs. 30/µL [10/170]; p < 0.001). A cut-off of maximum NRBCs of ≥100/µL effectively divided the study population into two groups with the most significant difference in ICU mortality (AUC 0.745; 95% CI 0.693-0.797; p < 0.001). Increased maximum NRBC values of ≥100/µL were associated with fivefold higher odds of death (odds ratio [OR] 5.03; 95% CI 3.19-7.90; p < 0.001). Higher mortality rates were confirmed using a Cox proportional-hazards model (hazard ratio [HR] 1.84; 95% CI 1.16-2.98; p = 0.012). CONCLUSIONS:Measuring NRBCs can help predict mortality in septic critically ill patients with high prognostic accuracy. A cut-off of ≥100/µL for NRBCs appears to effectively stratify the study population regarding mortality.

BACKGROUND:In-hospital mortality of septic critically ill patients with COVID-19 is significantly higher than in those without COVID-19. The knowledge on long-term outcomes remains scarce. In this retrospective analysis, we compare clinical characteristics, long-term functional outcomes, and survival in septic critically ill patients with and without COVID-19. METHODS:Data of septic critically ill patients without COVID-19 were collected as part of the Comprehensive Sepsis Center Dresden-Kreischa registry from 2020 to 2023. The data of septic critically ill patients with COVID-19 were collected as part of the local ARDS/COVID-19 registry over the same period. Diagnosis of sepsis was based on the Sepsis-3 definition. Variables collected for analyses were obtained from electronic health records. Long-term follow-up was performed 6-12 months after sepsis diagnosis. Survival was depicted using Kaplan-Meier curves. Associations between long-term mortality and risk factors were modeled by Cox Regression. RESULTS:372 septic patients without COVID-19 and 301 with COVID-19 were enrolled. Septic patients with COVID-19 were significantly younger, had a significantly lower Charlson Comorbidity Index, and had a significantly higher SOFA score at ICU admission. Long-term follow-up showed a significantly higher mortality in septic patients with COVID-19 (73.4 % vs. 30.1 %; HR 3.4 (95 % CI 2.73-4.27; p < 0.05)). COVID-19 infection was associated with significant increased mortality (adjusted HR 3.27; 95 % CI 2.48-4.33; p < 0.05) and reduced health-related quality of life, measured by the EQ-5D-3 L Index, (0.56 (0.16-0.79) vs. 0.79 (0.69-0.99); p < 0.05). CONCLUSIONS:In our cohort of septic critically ill patients, health-related quality of life and long-term survival were considerably reduced in patients with concomitant COVID-19. Furthermore, COVID-19 could be identified as an independent risk factor for higher long-term mortality in these patients.

Shewanella putrefaciens is a gramnegative, facultatively anaerobic, rod shaped bacterium. It belongs to the class of the Gammaproteobacteria and was first described in 1931. S. putrefaciens is part of the marine microflora and especially present in moderate and warm climates. The bacterium is a rare oppurtonistic human pathogen associated mainly with intra-abdominal as well as skin and soft tissue infections. However, it has also been reported in association with more severe diseases such as pneumonia, intracerebral and ocular infections and endocarditis. In these cases the clinical courses are often associated with underlying, predisposing diseases and risk factors. For successful treatment of S. putrefaciens, a combination of appropriate local therapy, e.g. surgical treatment or drainage, and antibiotic therapy should be performed. Since multiple resistances to antibiotics are described, the results of the antimicrobial susceptibility testing must be considered for effective therapy as well. Furthermore, a main challenge in clinical practice is the accurate microbiological identification, and especially the correct differentiation between S. putrefaciens and S. algae. Under certain circumstances, Shewanella-infections can have severe, sometimes even fatal consequences. Therefore, we decided to present the current state of knowledge as well as further aspects with regard to future diagnostics, therapy and research.

Background: The aim of this study was to describe and compare clinical characteristics and outcomes in critically ill septic patients with and without COVID-19.Methods: From February 2020 to March 2021, patients from surgical and medical ICUs at the University Hospital Dresden were screened for sepsis. Patient characteristics and outcomes were assessed descriptively. Patient survival was analyzed using the Kaplan-Meier estimator. Associations between in-hospital mortality and risk factors were modeled using robust Poisson regression, which facilitates derivation of adjusted relative risks.Results: In 177 ICU patients treated for sepsis, COVID-19 was diagnosed and compared to 191 septic ICU patients without COVID-19. Age and sex did not differ significantly between sepsis patients with and without COVID-19, but SOFA score at ICU admission was significantly higher in septic COVID-19 patients. In-hospital mortality was significantly higher in COVID-19 patients with 59% compared to 29% in Non-COVID patients. Statistical analysis resulted in an adjusted relative risk for in-hospital mortality of 1.74 (95%-CI=1.35-2-24) in the presence of COVID-19 compared to other septic patients. Age, procalcitonin maximum value over 2 ng/ml, need for renal replacement therapy, need for invasive ventilation and septic shock were identified as additional risk factors for in-hospital mortality.Conclusion: COVID-19 was identified as independent risk factor for higher in-hospital mortality in sepsis patients. The need for invasive ventilation and renal replacement therapy as well as the presence of septic shock and higher PCT should be considered to identify high-risk patients.

Background & aims: Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection can rapidly progress into acute respiratory distress syndrome accompanied by multi-organ failure requiring invasive mechanical ventilation and critical care treatment. Nutritional therapy is a fundamental pillar in the management of hospitalized patients. It is broadly acknowledged that overfeeding and underfeeding of intensive care unit (ICU) patients are associated with increased morbidity and mortality. This study aimed to assess the energy demands of long-term ventilated COVID-19 patients using indirect calorimetry and to evaluate the applicability of established predictive equations to estimate their energy expenditure. Methods: We performed a retrospective, single-center study in 26 mechanically ventilated COVID-19 patients with resolved SARS-CoV-2 infection in three independent intensive care units. Resting energy expenditure (REE) was evaluated by repetitive indirect calorimetry (IC) measurements. Simultaneously the performance of 12 predictive equations was examined. Patient's clinical data were retrieved from electronic medical charts. Bland-Altman plots were used to assess agreement between measured and calculated REE. Results: Mean mREE was 1687 kcal/day and 20.0 kcal relative to actual body weight (ABW) per day (kcal/kg/day). Longitudinal mean mREE did not change significantly over time, although mREE values had a high dispersion (SD of mREE +/- 487). Obese individuals were found to have significantly increased mREE, but lower energy expenditure relative to their body mass. Calculated REE showed poor agreement with mREE ranging from 33 to 54%. Conclusion: Resolution of SARS-CoV-2 infection confirmed by negative PCR leads to stabilization of energy demands at an average 20 kcal/kg in ventilated critically ill patients. Due to high variations in mREE and low agreement with calculated energy expenditure IC remains the gold standard for the guidance of nutritional therapy. (C) 2021 European Society for Clinical Nutrition and Metabolism. Published by Elsevier Ltd. All rights reserved.