Table 4.
Patient characteristics by preoperative brachial artery blood flow
| Brachial Artery Blood Flow | <40 ml/min | 40–59 ml/min | 60–79 ml/min | ≥80 ml/min | P Value |
|---|---|---|---|---|---|
| Total, N | 94 (32%) | 72 (24%) | 65 (22%) | 67 (22%) | |
| Age, yr, mean±SD | 51±16 | 53±15 | 54±13 | 53±13 | 0.67 |
| Sex, men (%) | 46 (49%) | 41 (57%) | 43 (66%) | 54 (81%) | <0.001 |
| Race, black (%) | 80 (85%) | 56 (78%) | 54 (83%) | 55 (49%) | 0.67 |
| Diabetes mellitus, N (%) | 42 (45%) | 39 (54%) | 42 (65%) | 33 (49%) | 0.09 |
| Coronary artery disease, N (%) | 23 (24%) | 14 (19%) | 17 (26%) | 15 (22%) | 0.80 |
| Peripheral vascular disease, N (%) | 17 (18%) | 9 (13%) | 6 (9%) | 9 (13%) | 0.44 |
| Cerebrovascular disease, N (%) | 17 (18%) | 16 (22%) | 16 (25%) | 9 (13%) | 0.37 |
| Obesity (BMI≥30 kg/m2), N (%) | 31 (33%) | 34 (47%) | 35 (54%) | 38 (57%) | 0.01 |
| LVEF<55%, N (%) | 16 (17%) | 14 (19%) | 15 (23%) | 15 (22%) | 0.77 |
| AVF location, upper arm, N (%) | 74 (79%) | 52 (72%) | 51 (78%) | 55 (58%) | 0.02 |
| Preoperative systolic BP, mm Hg, mean±SD | 145±24 | 146±26 | 145±24 | 149±26 | 0.82 |
| Preoperative diastolic BP, mm Hg, mean±SD | 81±16 | 84±18 | 81±17 | 83±17 | 0.58 |
n=298 (two missing values). BMI, body mass index.