Table 1. Patient demographics: preoperative and operative.

Variable	N [%] (total =240)
Age (years)	59 [19-87]
Male	178 [74]
Hypertension	216 [90]
Pain (chest, back)	96 [40]
Coronary artery disease	48 [20]
Chronic obstructive pulmonary disease	47 [20]
Diabetes mellitus	28 [12]
Renal dysfunction (GFR <60 or dialysis)	57 [24]
Peripheral arterial occlusive disease	27 [11]
Prior elephant trunk, stage 1	21 [10]
Prior ascending repair	104 [43]
Prior DeBakey I dissection repair	84 [40]
Prior transverse arch repair	57 [24]
Prior descending thoracic aortic repair	6 [3]
Prior Abdominal aortic aneurysm repair	14 [6]
Rupture	10 [4]
Genetically associated (Marfan, Loeys-Dietz)	17 [7]
Extent of aneurysm
A	72 [30]
B	13 [5]
C	155 [65]
Use of deep hypothermic circulatory arrest	3 [1.3]
Clamp time (minutes)	34±15
Pump time (minutes)	41±29
Intercostal artery reattachment	49 [20]

GFR, glomerular filtration rate.