Table 1. Baseline characteristics of patients with acceptable vs. poor outcomes according to Definition #1.
| All Patients n=2137 |
Acceptable Outcome n=1433 |
Poor Outcome n=704 |
P- Value |
|
|---|---|---|---|---|
| Age (y) | 84.4 (7.2) | 84.3 (7.2) | 84.6 (7.0) | 0.357 |
| Male (%) | 52.8 | 51.3 | 56.0 | 0.042 |
| Coronary artery disease (%) | 78.2 | 78.1 | 78.6 | 0.807 |
| Cerebrovascular disease (%) | 26.6 | 26.5 | 26.8 | 0.872 |
| Carotid disease (%) | 27.0 | 27.6 | 25.7 | 0.364 |
| Peripheral vascular disease (%) | 42.2 | 42.0 | 42.6 | 0.791 |
| Diabetes mellitus (%) | 36.6 | 38.4 | 33.1 | 0.017 |
| Major arrhythmia* (%) | 50.9 | 47.5 | 57.8 | <0.001 |
| Creatinine (mg/dL) | 1.31 (0.48) | 1.29 (0.46) | 1.36 (0.51) | 0.002 |
| Hemoglobin (g/dL) | 11.7 (1.5) | 11.8 (1.5) | 11.6 (1.5) | 0.033 |
| Mean arterial pressure (mmHg) | 87.1 (13.1) | 87.2 (12.8) | 87.0 (13.4) | 0.656 |
| Body mass index (kg/m2) | 26.9 (6.3) | 27.1 (6.1) | 26.6 (6.8) | 0.093 |
| Oxygen-dependent lung disease (%) | 10.9 | 9.3 | 14.3 | <0.001 |
| Pulmonary hypertension (%) | 40.0 | 39.2 | 41.5 | 0.316 |
| Mitral regurgitation (>1+) (%) | 25.3 | 24.8 | 26.3 | 0.473 |
| Aortic regurgitation (>1+) (%) | 10.5 | 10.8 | 9.9 | 0.536 |
| Mean aortic gradient (mmHg) | 43.8 (14.3) | 45.1 (14.3) | 41.2 (14.0) | <0.001 |
| Ejection fraction (%) | 52.0 (13.1) | 52.4 (13.0) | 51.2 (13.4) | 0.053 |
| Stroke volume (mL/beat) | 64.5 (21.1) | 65.1 (20.0) | 63.2 (23.1) | 0.053 |
| Mini-Mental Status Exam score | 27.4 (3.0) | 27.5 (2.9) | 27.1 (3.0) | 0.008 |
| 6-Min Walk Test (% able to perform) | 65.0 | 70.1 | 54.8 | <0.001 |
| 6-Min Walk Test distance (m) | 110.8 (118.1) | 123.9 (122.2) | 84.0 (104.3) | <0.001 |
| KCCQ Overall Summary score | 42.0 (21.7) | 43.8 (20.8) | 38.4 (23.0) | <0.001 |
| SF-12 Mental Summary score | 47.6 (11.2) | 48.3 (11.0) | 46.2 (11.5) | <0.001 |
| STS mortality risk score | 11.5 (4.4) | 11.4 (4.5) | 11.9(4.1) | 0.005 |
STS, Society of Thoracic Surgeon
*
Defined as a history of atrial fibrillation or flutter, supraventricular tachycardia, ventricular arrhythmias, or high-degree AV block Values in parentheses represent standard deviations