Baseline
A total of 48 patients with acute Stanford type A aortic dissection
underwent FET surgery. The baseline data and surgical data were shown inTable 1 and Table 2 . The propensity scores(Table 3) were matched according to the age and the FL distal
position, the matching ratio was 1:1, and the balance test of length was
shown in Table 4 . All patients were divided into two groups,
the short FET group, and the long FET group. After propensity score
matching, the preoperative data of the two groups were balanced.
Intraoperative data in Table 2 show that the long FET group
received bilateral cerebral perfusion (P <0.001),
femoral artery perfusion (P <0.001), and moderate-light
hypothermic circulatory arrest (P <0.001); the short FET
group received unilateral cerebral perfusion (P <0.001),
axillary artery perfusion (P =0.046), and deep hypothermic
circulatory arrest (P <0.001). In the postoperative
patient data (Table 2) , the distal landing zone of the long FET
group was Th8-9, and the distal landing zone of the short FET group was
Th6-8. No deaths were observed in both groups of patients. There was no
significant difference in stroke, SCI, infection, and leakage.