Estimation of sodium and chloride storage in critically ill patients: a balance study

Autor: Annemieke Oude Lansink-Hartgring, Lara Hessels, Miriam Zeillemaker-Hoekstra, Maarten W. N. Nijsten
Přispěvatelé: Microbes in Health and Disease (MHD), Critical care, Anesthesiology, Peri-operative and Emergency medicine (CAPE)
Rok vydání: 2018
Předmět:
Zdroj: Annals of Intensive Care
Annals of Intensive Care, Vol 8, Iss 1, Pp 1-8 (2018)
Annals of Intensive Care, 8:97. SpringerOpen
ISSN: 2110-5820
DOI: 10.1186/s13613-018-0442-2
Popis: Background Nonosmotic sodium storage has been reported in animals, healthy individuals and patients with hypertension, hyperaldosteronism and end-stage kidney disease. Sodium storage has not been studied in ICU patients, who frequently receive large amounts of sodium chloride-containing fluids. The objective of our study was to estimate sodium that cannot be accounted for by balance studies in critically ill patients. Chloride was also studied. We used multiple scenarios and assumptions for estimating sodium and chloride balances. Methods We retrospectively analyzed patients admitted to the ICU after cardiothoracic surgery with complete fluid, sodium and chloride balance data for the first 4 days of ICU treatment. Balances were obtained from meticulously recorded data on intake and output. Missing extracellular osmotically active sodium (MES) was calculated by subtracting the expected change in plasma sodium from the observed change in plasma sodium derived from balance data. The same method was used to calculate missing chloride (MEC). To address considerable uncertainties on the estimated extracellular volume (ECV) and perspiration rate, various scenarios were used in which the size of the ECV and perspiration were varied. Results A total of 38 patients with 152 consecutive ICU days were analyzed. In our default scenario, we could not account for 296 ± 35 mmol of MES in the first four ICU days. The range of observed MES in the five scenarios varied from 111 ± 27 to 566 ± 41 mmol (P
Databáze: OpenAIRE