Figure 1From: Serum levels of N–terminal proB–type natriuretic peptide in mechanically ventilated critically ill patients – relation to tidal volume size and development of acute respiratory distress syndrome Upper panels: serum levels of NT–proBNP in a scatterplot with cumulative fluid balance on day 0 to 4; all correlations (r) were significant on all days. Lower panels: serum levels of NT–proBNP in patients without heart failure. All correlations were significant on all days.Back to article page