The goal of this observational study, is to improve the diagnostic assessment method of malnutrition and kidney diseases, amongst hospitalized and low priority patients, by evaluating modern methodology and biomarkers, with regards to an estimate of the nutritional status and kidney diseases, against current gold standards, and also investigate how body composition, hydration, inflammation and age affect the assessments.
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To investigate whether the method used to determine body composition affects the diagnosis of malnutrition when applying the GLIM criteria.
Timeframe: Time of inclusion and/or 14 days after preliminary inclusion.
To evaluate the performance of eGFR based on creatinine, cystatin C, B2M, and BTP relative to mGFRDBS in acutely hospitalized patients with a cystatin C/kreatinin ratio <0,7 (patients from groups 1 and 2)
Timeframe: From enrollment to 6-8 hours later same day (when mGFRDBS is completed)
To evaluate the performance of eGFR based on creatinine, cystatin C, B2M, and BTP relative to mGFRDBS in patients aged ≥90 år (patients from groups 1 and 3)
Timeframe: From enrollment to 6-8 hours later same day (when mGFRDBS is completed)
To evaluate the performance of eGFR based on creatinine, cystatin C, B2M, and BTP relative to mGFRDBS in patients with BMI ≥35 kg/m2 (patients from groups 1 and 4)
Timeframe: From enrollment to 6-8 hours later same day (when mGFRDBS is completed)
To determine changes in mGFRDBS during and after treatment with ≥37.5 mg daily prednisolone (patients from group 5)
Timeframe: From enrollment to approximately 10-35 days after prednisolone treatment
To determine changes in mGFRDBS before and after amputation (patients from group 6)
Timeframe: From enrollment to follow-up after amputation (approximately 3 weeks after operation)