Patient characteristics
Preoperative clinical characteristics of the patients are presented in
Table 1.
Significantly more patients in the elderly group were female (P< 0.001), and thus, BMI was significantly lower in the elderly
group (P < 0.001). There were no significant
differences for hypertension, hyperlipidemia, diabetes mellitus, chronic
kidney disease, preoperative shock status (sBP > 80 mmHg),
cardiac tamponade, and neurologic deficit between the groups.
Interestingly, patients in the elderly group were significantly more
likely to have undergone DeBakey type II dissection and noncommunicating
dissection compared with the patients in the control group (DeBakey type
II: P = 0.0349, noncommunicating aortic dissection: P< 0.001). There were no significant differences for
malperfusion between the groups. Although preoperative walking ability
was not significantly different between the groups, the Barthel index in
the elderly group was significantly lower than the control group
(P = 0.008).