Central nervous injury risk factors after endovascular repair of a thoracic aortic aneurysm with type B aortic dissection

Table 2 Surgical-related characteristics of the two groups of patients

Variable	Non-injury group (n = 147)	Injury group (n = 159)	χ2/t	P value
Type of main stent			0.166	0.983
Captivia	100	108
Zenith	17	19
Ankura	28	29
Grink	2	3
Vertebral stent	45	48	0.007	0.936
Length of stent	189.91 ± 23.11	186.87 ± 23.37	1.143	0.254
Coverage of left subclavian artery			0.299	0.585
Partial coverage	85	87
Complete coverage	62	72
Maximum diameter of descending aorta	4.21 ± 0.34	4.23 ± 0.27	0.564	0.573
Surgery time	88.93 ± 8.29	109.31 ± 7.56	22.496	< 0.001
Mechanical ventilation time	101.36 ± 10.23	119.52 ± 9.28	16.283	< 0.001
Success rate of surgery	147	159	-	-