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Preoperative sodium abnormalities and adverse postoperative outcomes in older surgical patients: association and incremental predictive value in the BioCog cohort.
Fislage, Marinus ORCID: https://orcid.org/0000-0001-9102-1373, Feinkohl, Insa ORCID: https://orcid.org/0000-0002-0307-1862, Lammers-Lietz, Florian ORCID: https://orcid.org/0000-0002-7371-3947, Pischon, Tobias ORCID: https://orcid.org/0000-0003-1568-767X, Winterer, Georg ORCID: https://orcid.org/0000-0002-3610-5029, Spies, Claudia D. ORCID: https://orcid.org/0000-0002-1062-0495, Borchers, Friedrich ORCID: https://orcid.org/0000-0001-7290-2271 and Zacharias, Norman ORCID: https://orcid.org/0000-0001-5794-5716
European Geriatric Medicine 27 September 2026