Table 1. Characteristics of Patients with and without Postoperative Cognitive Dysfunction.
| POCD n = 8 (29%) | No POCD n = 20 | p Value | |
| Age (years) | 75.9±8.1 | 71.4±7.2 | 0.159 |
| ≥75 | 5 (63) | 5 (25) | 0.136 |
| 65≤74 | 2 (25) | 13 (65) | |
| Gender (male/female) | 6/2 | 13/7 | 1.000 |
| Education (years) | 12.6±3.0 | 10.3±2.2 | 0.028 |
| Hypertension | 5 (63) | 15 (75) | 0.651 |
| Diabetes mellitus | 3 (37) | 6 (30) | 1.000 |
| Peripheral arterial disease | 1 (13) | 1 (5) | 0.497 |
| History of atrial fibrillation | 4 (50) | 5 (25) | 0.372 |
| Ejection fraction | 59.6±12.6 | 65.8±14.2 | 0.297 |
| Preoperative medications | |||
| Aspirin | 5 (63) | 13 (65) | 1.000 |
| Statins | 4 (50) | 9 (45) | 1.000 |
| β-blockers | 4 (50) | 6 (30) | 0.400 |
| Surgical procedure | |||
| CABG | 1 (13) | 8 (40) | 0.061 |
| CABG/Valvular | 3 (37) | 1 (5) | |
| Valvular | 4 (50) | 11 (55) | |
| CPB time (min) | 202±57 | 183±74 | 0.529 |
| Cross-clamp time (min) | 116±34 | 119±41 | 0.861 |
Continuous variables are presented as mean ± SD and categorical variables are presented as frequency (percentage). CABG = coronary artery grafting; CPB = cardiopulmonary bypass.