Determine Difference in Area-under-the-Curve (Normalized Resistance at 4000 Hz)
To be calculated after recording full ECIS curve after stimulation with human serum from liver transplant (LT) patients.
Goal: To calculate the difference in AUC between the normalized ECIS curves generated by (a) Liver transplant serum and (b) Healthy pooled serum.
ΔAUC = AUCLT serum - AUCHealthy pooled serum
Baseline resistance is normalized to 1
AUC of curve that drops below 1 = Negative AUC --> interpreted as an increase in EC permeability
AUC of curve that rises above 1 = Positive AUC
e.g., for a typical Liver serum sample that induces permeability:
AUCLT serum = Negative number
AUCHealthy pooled serum = Positive number
ΔAUC = Negative number - Positive number = Large negative number
e.g., for a typical Liver serum sample that does not induce much permeability:
AUCLT serum = Smaller positive number
AUCHealthy pooled serum = Larger positive number
ΔAUC = Smaller positive number - Larger positive number = Small negative number
Final AUC analysis will use data from 0-3 hrs.