Table 2.

Parameters of VWF function in ECMO patients

Parameter	Value	Normal values
VWF Antigen (IU/dl, IQR)	432 (327 - 728)	60 - 150
VWF Activity (IU/dl, IQR)	247.0 (182.0 - 382.5)	47.8 - 173.2
VWF Activity/Antigen (IQR)	0.51 (0.44 – 0.64)	0.73 - 1.16
VWF CBA (IU/dl, IQR)	120 (57 - 225)	60 - 150
VWF CBA/Antigen ratio (IQR)	0.24 (0.18 – 0.42)	0.8 – 1.5
HMW VWF multimers, n (%)	Reduced: 3 (23) Absent: 10 (77)	(normal)

Data are presented as median (interquartile range, Q1-Q3) or number of patients (%). Denominator of the percentage is the total number of subjects in the group (n=13). CBA Collagen binding activity, HMW High molecular weight