Table 3.

Operative Parameters

Variable	Pre-TASP (n = 56)	TASP (n = 72)	p Value
Case status			0.04
Urgent	6 (11)	18 (25)
Emergent	50 (89)	54 (75)
Operation within 24 h of symptoms	39 (70)	49 (68)	0.85
Operation beginning at night (5 pm–6 am)	27 (48)	21 (29)	0.03
Redo sternotomy	7 (13)	8 (11)	0.81
Ascending aorta replacement	55 (98)	72 (100)	0.26
Arch replacement	14 (25)	70 (97)	<0.0001
Arch type			0.52
Hemi-arch	14 (25)	68 (94)
Total arch	0	2 (3)
Aortic valve resuspension	22 (39)	55 (76)	<0.0001
Aortic valve replacement	12 (21)	0	<0.0001
Aortic valve repair	0	4 (6)	0.07
Aortic root replacement	16 (29)	17 (24)	0.52
Root type			0.001
Valve sparing (David-V)	0	6 (8)
Mechanical composite	15 (27)	4 (6)
Stentless bioprosthetic	0	4 (6)
Pericardial composite	1 (2)	3 (4)
Concomitant procedure	21 (38)	12 (17)	0.008
Coronary artery bypass grafting	16 (29)	8 (11)
Mitral valve replacement	1 (2)	0
Mitral valve repair	1 (2)	0
Maze procedure	1 (2)	0
Innominate bypass	2 (4)	0
Aortic arch debranching	0	1 (1)
Descending thoracic aortic endograft	0	1 (1)
Atrial septal defect closure	0	1 (1)
Pulmonary artery embolectomy	0	1 (1)
Femoral bypass	1 (2)	1 (1)
Extracorporeal membrane oxygenation	1 (2)	0
Aortic cross-clamp time, min	128 ± 50 (47–301)	122 ± 37 (48–250)	0.62
Cardiopulmonary bypass time, min	270 ± 94 (107–665)	214 ± 48 (78–377)	<0.0001
Use of circulatory arrest	38 (68)	70 (97)	<0.0001
Nadir NP temperature, °C	16.3 ± 1.4 (12.0–19.0)	14.6 ± 1.9 (11.0–19.0)	<0.0001
Circulatory arrest time, min	33 ± 12 (12–53)	25 ± 8 (13–61)	0.002
Selective cerebral perfusion	26 (68)	70 (100)	<0.0001
Antegrade cerebral perfusion	5 (13)	67 (96)
Retrograde cerebral perfusion	21 (55)	3 (4)
Recombinant activated factor VII use	0	30 (42)	<0.0001

Values are n (%) or mean ± SD (range).

NP = nasopharyngeal; other abbreviation as in Table 1.