Cognitive Dysfunction after On-Pump Operations: Neuropsychological Characteristics and Optimal Core Battery of Tests
Table 4
Patient characteristics (Study 2).
Variables
CABG
Open heart surgery
Healthy controls
P
Number of patients
16
34
30
Male sex (%)
94*
50
40
<0.001
Age (years)
56.9 ± 7.9#
45.2 ± 11.2
50.1 ± 15.1
0.006
Education (years)
14.1 ± 4.0
14.6 ± 2.8
14.3 ± 3.0
NS
History of hypertension (%)
75
23.5
<0.001
History of diabetes (%)
6.3
2.9
NS
Previous myocardial infarction (%)
87.5
0
<0.001
Ejection fraction (%)
59.0 ± 5.1
62.9 ± 7.3
0.050
Cardio-pulmonary bypass time (min)
121.9 ± 41.2
115.7 ± 49.6
NS
Aortic cross-clamp time (min)
69.6 ± 21.9
73.9 ± 34.6
NS
Mini-Mental State Examination
25.8 ± 3.4#
27.9 ± 2.4
27.3 ± 3.2
0.030
WAIS Digit Span Forward
5.76 ± 1.03
6.31 ± 1.02
6.27 ± 1.34
NS
WAIS Digit Span Backward
4.53 ± 1.07
5.11 ± 1.49
4.93 ± 1.20
NS
WAIS Digit Symbol
39.1 ± 11.5*
47.1 ± 11.8
47.6 ± 13.3
0.056
WAIS Block Designs
37.8 ± 5.5
38.9 ± 7.9
39.0 ± 8.3
NS
Values are expressed as mean ± SD, where appropriate. Abbreviations: see Table 1. CABG group differed near significantly from Open Heart patients and control group. CABG group differed significantly from Open Heart patients.
