Table 3. Operative details (minutes, mean±S.D., median [range]).

	Cardiopulmonary bypass	Cardiac ischemia	Lower body circulatory arrest	Selective antegrade cerebral perfusion
Overall (n=438)	191.0±69.2 median 176 [97-546]	92.1±49.7 median 76 [29-304]	43.8±15.4 median 41 [13-120]	100.3±33.2 median 91 [38-261]
Acute type A dissection (n=80)	245.2±88.3 median 226 [102-546]	137.7±53.7 median 129 [54-272]	51.6±16.2 median 50 [25-50]	123.8±41.1 median 114 [60-261]
Non-dissection (n=280)	174.1±52.2 median 160 [98-464]	76.1±35.2 median 66 [29-240]	40.9±14.7 median 37 [18-120]	93.0±27.7 median 85.5 [38-210]
Arch branch first anastomosis (n=39)	183±72.9 median 178 [101-326]	124.5±55.8 median 120 [78-201]	37.6±21.0 median 35 [20-51]	78.7±34.4 median 76 [71-102]