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

Table 3 Postoperative-related characteristics of the two groups of patients

Variable	Noninjury group (n = 147)	Injury group (n = 159)	t value	P value
ICU stay time (day)	3.58 ± 0.56	6.70 ± 1.37	25.723	< 0.001
Hospitalization time (day)	17.98 ± 7.65	19.27 ± 6.42	1.602	0.109
Urine volume on the first day after surgery (mL)	1427 ± 621.32	1409 ± 601.26	0.258	0.797
Postoperative recovery time (hour)	1.68 ± 0.56	3.17 ± 1.37	12.303	< 0.001
Blood pH value on the first day after surgery	7.44 ± 0.16	7.37 ± 0.17	3.714	< 0.001
PaO2 on the first day after surgery	101.71 ± 35.87	81.63 ± 37.17	4.801	< 0.001

ICU: Intensive care unit.