In patients with intravenous furosemide administration, an additional 15 ml of blood is taken for the analysis of specific parameters as part of the blood sampling necessary for the treatment of the patient.~The effect of furosemide is assessed on the basis of the patient's urine excretion. For this purpose, fluid intake and excretion are balanced over 6 hours. The blood sample is taken at the beginning of the balancing period.~In addition, the albumin concentration, ABiC, as well as the total and free concentration of furosemide in the collected urine are determined.
During this prospective, uncontrolled and non-interventional observational study, the influence of albumin function on the efficacy of furosemide will be investigated. The aim of the study is to provide information on the efficacy of furosemide depending on albumin function.