TABLE 2.

Serum calpains’ activity relative fluorescence unit (RFU/μl) at baseline level and different time points after cardiopulmonary bypass (CPB).

Calpains’ activity (RFU/μ l)	ALI (n = 20)	Non-ALI (n = 50)	P-value
Beginning of CPB (baseline)	20.07 (16.69, 25.47)	19.19 (16.95, 23.36)	0.317
1 h during CPB	24.97 (23.82, 31.58)	24.26 (20.83, 29.71)	0.095
End of CPB	29.33 (24.37, 38.45)	25.80 (21.16, 31.21)	0.048
1 h after CPB	44.32 ± 11.76	34.64 ± 9.50	0.001
12 h after CPB	74.14 ± 17.80	48.29 ± 15.06	<0.001
24 h after CPB	78.03 (55.22, 90.60)	44.72 (36.00, 60.10)	<0.001

Data are presented as mean ± SD or median (interquartile range), as appropriate.

Results with statistical differences (p < 0.05) are bold.