XY-plot of bronchial and corrected bronchial microdialysis data against arterial microdialysis data of lactate and fluorescein isothiocyanate dextran 4000 Da. All five pigs are represented; number one closed circles and line, number two open circles and dotted line, number three closed triangles and medium dashed line, number four open triangles and dash-dot-dot line, and number five closed squares and long dashed line. Plot A and B show arterial lactate along the X-axis and bronchial (R2 0.82 ± 0.18) and ureacorrected bronchial lactate (R2 0.91 ± 0.11) along the Y-axis respectively. Paired t-test of R2 for the individual bronchial and ureacorrected bronchial lactate XY-plots showed significant difference (p < 0.05). Plot C and D show arterial fluorescein isothiocyanate dextran 4000 Da (FD-4) along the X-axis and bronchial (R2 0.53 ± 0.38) and ureacorrected bronchial FD-4 (R2 0.72 ± 0.34) along the Y-axis. Paired t-test of R2 for the individual bronchial and ureacorrected bronchial FD-4 XY-plots was not significant.