Table 1. Demographic and clinical characteristics of patients.

	n	%	Mean±SD
Age (year)			51.5±9.7
Sex Male	17	73.9
Emergency <24 h	4	17.4
CAD	7	30.4
Ejection fraction <%50	3	13
COPD	4	17.4
Diabetes mellitus	2	8.7
Creatinine >2 mg/dL	2	8.7
History of stroke	1	4.3
Marfan syndrome	3	13
Severe aortic regurgitation	4	17.4
Previous operation time (year)			5±3.1
Causes of reoperation
False lumen aneurysm	10	43.5
Additional cardiac operation	6	26.1
Rupture	4	17.4
Malperfusion	3	13
Aortic diameters (mm)
Aortic arch			45.6±9.7
Descending aorta			56.3±14.8
Abdominal aorta			41±9.4
Tear zone
Zone 0 (Anastomosis line)	9	39.1
Zone 1	2	8.7
Zone 2	5	21.7
Zone 3	7	30.4
SD: Standard deviation; CAD: Coronary artery disease; COPD: Chronic obstructive pulmonary disease.