Lung Edema

The goal of this single center observational cohort study is to investigate the relationship between physiological measures of lung oedema, and the biomarker Heparin-binding Protein (HBP). The main questions it aims to answer are: * Does the concentration of HBP in plasma correlate with measures of lung vascular permeability and extravascular water in the lungs? * Does the concentration of HBP in plasma correlate with the patient's total accumulated fluid balance? Researchers will collect blood samples and gather information on lung vascular permeability and extravascular lung water in Intensive care patients who are provided with a hemodynamic surveillance system called PiCCO. The study will include 25 patients.