Table 2.

Operative data for 50 patients with extended thoracic aortic aneurysm who underwent open stent-grafting using a Matsui-Kitamura stent

Variable	Valuea
Elective/emergency surgery	44 (88)/6 (12)
Operating time, min	364 ± 66
Cardiopulmonary bypass time, min	179 ± 21
Aortic clamping time, min	86 ± 21
Selective cerebral perfusion time, min	103 ± 23
Lower-body circulatory arrest time, min
Without retrograde distal perfusion (n = 21)	47 ± 10
With retrograde distal perfusion (n = 29)	15 ± 3
Preoperative cerebrospinal fluid drainage	3 (6)
Concomitant procedure	4 (8)
Mitral valve replacement	1 (2)
Coronary artery bypass grafting	1 (2)
Implantation of pacemaker	2 (4)
Distal stent-graft landing zone level
Th6	4 (8)
Th7	15 (30)
Th8	24 (48)
Th9	6 (12)
Th12	1 (2)

^aContinuous data are shown as mean ± standard deviation and categorical data as number (%).