1. Serum sodium alterations in SARS CoV-2 (COVID-19) infection: impact on patient outcome
- Author
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Andrea Ungar, Giulia Scocchera, Giovanni Corona, Gabriele Parenti, Benedetta Fibbi, Loredana Poggesi, Riccardo Pini, Adriano Peris, Carlo Nozzoli, Alessandro Bartoloni, Andrea Berni, Mario Maggi, Filippo Pieralli, Federico Lavorini, Alessandro Peri, Danilo Malandrino, and Andrea Fanelli
- Subjects
Male ,medicine.medical_specialty ,Critical Care ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Sodium ,chemistry.chemical_element ,030209 endocrinology & metabolism ,Comorbidity ,Severity of Illness Index ,03 medical and health sciences ,0302 clinical medicine ,Endocrinology ,Internal medicine ,Severity of illness ,medicine ,Humans ,Hospital Mortality ,Saline ,Aged ,Retrospective Studies ,Aged, 80 and over ,Fluorocarbons ,Hypernatremia ,Interleukin-6 ,SARS-CoV-2 ,business.industry ,COVID-19 ,Retrospective cohort study ,General Medicine ,Middle Aged ,medicine.disease ,Respiration, Artificial ,Hydrocarbons, Brominated ,Hospitalization ,Pneumonia ,Severe acute respiratory syndrome-related coronavirus ,chemistry ,030220 oncology & carcinogenesis ,Female ,business ,Hyponatremia - Abstract
Objective Hyponatremia is the most common electrolyte disorder in hospitalized patients and occurs in about 30% of patients with pneumonia. Hyponatremia has been associated with a worse outcome in several pathologic conditions The main objective of this study was to determine whether serum sodium alterations may be independent predictors of the outcome of hospitalized COVID-19 patients. Design and methods In this observational study, data from 441 laboratory-confirmed COVID-19 patients admitted to a University Hospital were collected. After excluding 61 patients (no serum sodium at admission available, saline solution infusion before sodium assessment, transfer from another hospital), data from 380 patients were analyzed. Results 274 (72.1%) patients had normonatremia at admission, 87 (22.9%) patients had hyponatremia and 19 (5%) patients had hypernatremia. We found an inverse correlation between serum sodium and IL-6, whereas a direct correlation between serum sodium and PaO2/FiO2 ratio was observed. Patients with hyponatremia had a higher prevalence of non-invasive ventilation and ICU transfer than those with normonatremia or hypernatremia. Hyponatremia was an independent predictor of in-hospital mortality (2.7-fold increase vs normonatremia) and each mEq/L of serum sodium reduction was associated with a 14.4% increased risk of death. Conclusions These results suggest that serum sodium at admission may be considered as an early prognostic marker of disease severity in hospitalized COVID-19 patients.
- Published
- 2021