RT Journal Article T1 Vitamin D Status in Critically Ill Patients with SIRS and Its Relationship with Circulating Zn and Related Parameters during ICU Stay. A1 Herrera-Quintana, Lourdes A1 Vázquez-Lorente, Héctor A1 Molina-López, Jorge A1 Gamarra-Morales, Yenifer A1 Martín-López, Javier Ignacio A1 Planells, Elena K1 Intensive Care Unit K1 Systemic Inflammatory Response Syndrome K1 Zinc K1 critically ill patient K1 vitamin D AB Critically ill patients are exposed to different stressors which may generate Systemic Inflammatory Response Syndrome (SIRS). This situation hinders the assessment of micronutrients status, such as vitamin D or Zinc (Zn), potentially affecting patients' treatment and recovery. The aim of the present study was to assess the evolution of circulating 25-Hydroxyvitamin D (25-OH-D) levels after seven days of Intensive Care Unit (ICU) stay and the influence on changes in plasma and erythrocyte Zn levels, as well as other parameters related to phosphorus-calcium metabolism. A prospective analytical study was conducted on 65 critically ill patients (42% women) aged 31-77 years with SIRS. Total 25-OH-D levels were measured in plasma samples by liquid chromatography-tandem mass spectrometry, and Zn content was analyzed by flame atomic absorption spectrometry. Both 25-OH-D and 25-OH-D3 levels were directly associated with erythrocyte Zn concentration at follow-up (p = 0.046 and p = 0.011, respectively). A relationship between erythrocyte and plasma Zn was also found at this follow-up point. No such clear associations were found when considering 25-OH-D2. Different disturbances in levels of phosphorus-calcium metabolism parameters were found, suggesting a relationship between the changes of 25-OH-D3 levels and parathormone (p = 0.019) and phosphorus (p = 0.005). The findings of the present study suggest an interaction between vitamin D and Zn, in which the correct status of these micronutrients could be a potentially modifiable factor and a beneficial approach in the recovery of critically ill patients. YR 2022 FD 2022-08-30 LK http://hdl.handle.net/10668/21500 UL http://hdl.handle.net/10668/21500 LA en DS RISalud RD Apr 11, 2025