Table 2. Operative data.

	Group A (n = 31)	Group N (n = 22)	p value
Operation mode			0.63
Total arch replacement (n, %)	28 (90.3%)	21 (95.5%)
Hemi-arch replacement (n, %)	3 (9.7%)	1 (4.5%)
Operation time (min)	593 ± 102	608 ± 111	0.63
CPB time (min)	330 ± 65	336 ± 52	0.72
Aortic clamp time (min)	251 ± 61	245 ± 47	0.70
SCP time (min)	157 ± 64	180 ± 48	0.15
LBCA time (min)	101 ± 31	108 ± 30	0.39
Lowest rectal temperature (°C)	23.4 ± 1.2	23.5 ± 1.1	0.70

CPB: cardiopulmonary bypass; LBCA: lower body circulatory arrest; SCP: selective cerebral perfusion