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Table 1 Demographic data, preoperative risk factors

From: Effect of moderate hypothermic circulatory arrest on neurological outcomes in elderly patients undergoing replacement of the thoracic aorta

 TotalYoung group
702 (77.6%)
Elderly group
203 (22.4%)
p value
Mean age, years66.7 ± 11.1
69.2 (61.0, 74.4)
63.2 ± 10.2
66.3 (57.5, 70.9)
78.7 ± 3.0
78.0 (76.3, 80.1)
< 0.001
Female gender, n301 (33.3%)221 (31.5%)80 (39.4%)0.035
Body mass index, kg/m226.5 (24.2, 29.4)26.8 (24.2, 29.7)25.4 (23.7, 27.8)< 0.001
EuroSCORE II%4.12 (2.38, 7.13)11.6% (7.4, 19.9)26.7% (18.1, 36.3)< 0.001
Ejection fraction, %64 (53, 70)62 (51, 70)65 (55, 70)0.622
Aortic aneurysm, n823 (90.9%)647 (92.2%)176 (86.7%)0.017
Diameter of aneurysm, mm52 (50, 57)52 (50, 56)52 (49, 59)0.574
Aortic calcification, n113 (12.5%)55 (7.8%)27 (13.3%)0.017
Acute myocardial infarction, n10 (1.1%)8 (1.1%)2 (1.0%)1.000
Diabetes mellitus type II, n108 (11.9%)75 (10.7%)33 (16.3%)0.031
Peripheral vascular disease, n108 (11.9%)34 (4.8%)17 (8.4%)0.055
Arterial hypertension, n687 (75.9%)523 (74.5%)164 (80.8%)0.065
Atrial fibrillation, n163 (18.0%)115 (16.4%)48 (23.6%)0.018
Chronic obstructive pulmonary disease, n104 (11.5%)74 (10.6%)30 (14.8%)0.097
Coronary heart disease, n350 (38.8%)249 (35.6%)101 (49.8%)< 0.001
Chronic renal failure, n99 (11.0%)64 (9.1%)35 (17.2%)0.001
Renal replacement therapy, n10 (1.1%)8 (1.1%)2 (1.0%)1.000