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Table 3 Univariate analysis of risk factors associated with stroke

From: The use of cIMT as a predictor of postoperative stroke in patients undergoing surgical repair of acute type a aortic dissection

VariablesNo-stroke
(n = 66)
Stroke
(n = 10)
OR(95%CI)P value
Male55 (83.3)6 (60.0)0.30 (0.07–1.24)0.097
Age (year)45.6 ± 10.247.0 ± 8.41.01 (0.95–1.09)0.684
BMI (kg/m2)27.5 ± 4.626.8 ± 4.90.96 (0.82–1.13)0.638
Hypertension53 (80.3)7 (70.0)0.57 (0.13–2.52)0.461
Diabetes mellitus3 (4.5)0a0.995
Hyperlipidemia5 (7.6)1 (10.0)1.36 (0.14–12.97)0.792
Marfan syndrome1 (1.5)0a0.995
Smoking history30 (45.5)3 (30.0)0.51 (0.12–2.16)0.364
Hydropericardium11 (16.7)2 (20.0)1.25 (0.23–6.70)0.795
LVEF (%)61.9 ± 5.163.9 ± 3.61.09 (0.94–1.26)0.241
White blood cell count (109/l)11.9 ± 3.212.8 ± 1.81.11 (0.89–1.38)0.346
Serum creatinine (umol/l)84.7 ± 32.784.4 ± 24.31.00 (0.98–1.02)0.973
Primary entry tear
 Unknown11 (16.7)3 (30.0)1.0 
 Ascending aorta50 (75.8)7 (70.0)0.51 (0.11–2.30)0.384
 Aortic arch5 (7.6)0a0.993
Coronary artery involvement18 (27.3)2 (20.0)0.67 (0.13–3.44)0.628
Aortic root repair
 Ascending aorta replacement43 (65.2)7 (70.0)1.0 
 Bentall procedure23 (34.9)3 (30.0)1.09 (0.53–2.24)0.806
Lowest nasopharyngeal temperature (°C)23.5 ± 0.823.7 ± 0.51.47 (0.61–3.56)0.394
CPB time (min)205.4 ± 43.5207.8 ± 43.61.00 (0.99–1.02)0.871
Cross-clamp time (min)114.6 ± 31.3111.0 ± 26.51.00 (0.97–1.02)0.724
Circulatory arrest time (min)23.1 ± 7.722.2 ± 6.10.98 (0.89–1.08)0.737
Intraoperative transfusion of PRBCs39 (59.1)5 (50.0)0.69 (0.18–2.63)0.589
Intraoperative transfusion of FFP34 (51.5)4 (40.0)0.63 (0.16–2.43)0.500
Intraoperative transfusion of platelets5 (7.6)0a0.993
cIMT (mm) > 0.927 (40.9)8 (80.0)5.78 (1.14–29.35)0.034
  1. Continuous data are presented as the mean ± standard deviation and categorical data as number (percentage)
  2. Abbreviations: OR odd ratio, 95% CI 95% confidence interval, BMI body mass index, LVEF left ventricular ejection fraction, CABG coronary artery bypass grafting, CPB cardiopulmonary bypass, PRBCs packed red blood cells, FFP fresh-frozen plasma, cIMT carotid intima–media thickness
  3. aThe result failed because of the small sample size