RT info:eu-repo/semantics/doctoralThesis T1 Valor pronóstico de la linfopenia en la mortalidad a los 2 años en el shock séptico A1 Rico Feijoo, Jesús A2 Universidad de Valladolid. Escuela de Doctorado K1 Critical care medicine K1 Sepsis K1 Sepsis K1 Lymphocytes K1 Linfocitos K1 Mortality K1 Mortalidad K1 3109.10 Cirugía AB Background and Objective:The diagnosis of infection, especially in the context of septic shock, has traditionally relied on leukocyte counts and protein biomarkers. Despite advancements, mortality rates persistently range from 20% to 50%, increasing in the long term. The sepsis definition excludes leukocyte counts, and short-term mortality has been associated with lymphopenia. However, the existence of immunosuppression and increased long-term sepsis-related mortality remains unproven. This study aims to establish a correlation between the onset of lymphopenia and its non-recovery during septic shock with 2-year mortality.Patients and Methods:A cohort of 332 elderly patients diagnosed with septic shock underwent examination. Mortality at 28 days and 2 years was analyzed based on leukocyte, neutrophil, and lymphocyte counts, as well as the ability to recover from lymphopenia (LRec).Results:Lymphopenia was observed in 74.1% of patients, persisting in 66.3% during ICU stay. Mortality rates were 31.0% and 50.3% at 28 days and 2 years, respectively. A leukocyte count < 12,000 µL-1 predicted early mortality (OR 2.96), while delayed LRec predicted late mortality (OR 3.98). Long-term mortality was associated with LRec (HR 1.69).Conclusions:In elderly patients with septic shock, the absence of leukocytosis and neutrophilia is linked to 28-day mortality, and LRec is associated with 2-year mortality, suggesting two distinct phenotypes of post-septic shock behavior. YR 2024 FD 2024 LK https://uvadoc.uva.es/handle/10324/66870 UL https://uvadoc.uva.es/handle/10324/66870 LA spa NO Escuela de Doctorado DS UVaDOC RD 27-dic-2024