Table 1.
Baseline characteristics
| Characteristic | AF or HF | No AF or HF | All | P-Value |
|---|---|---|---|---|
| N | 105 | 239 | 344 | |
| Age, yr | 74.6 [68.4–80.9] | 65.3 [50.1–75.2] | 69.3 [55.7–77.2] | <0.001 |
| Men, n (%) | 76 (72%) | 158 (66%) | 234 (68%) | 0.52 |
| Body weight, kg | 74.8 [66–86.6] | 74 [65.4–84.9] | 74.3 [65.5–85.5] | 0.54 |
| Height, m | 1.71 (0.0893 SD) | 1.71 (0.0837 SD) | 1.71 (0.0853 SD) | 0.93 |
| Body mass index, kg/m2 | 25.4 [22.5–29] | 25.1 [22.8–28.6] | 25.2 [22.8–28.7] | 0.46 |
| Dialysis vintage, mo | 38 [21.2–77.6] | 42.4 [23–75.6] | 41.1 [22.7–76.6] | 0.35 |
| Calcium phosphate product, mmol2/L2 | 3.76 (1.07 SD) | 3.88 (1.18 SD) | 3.85 (1.15 SD) | 0.38 |
| Effective time of dialysis per session, h | 4.22 [4–4.5] | 4.25 [4–4.53] | 4.23 [4–4.5] | 0.33 |
| UFV, ml | 2366 (1190 SD) | 2156 (1094 SD) | 2220 (1127 SD) | 0.11 |
| UF rate, ml/h | 539 (269 SD) | 484 (237 SD) | 501 (248 SD) | 0.06 |
| Kt/V (−) | 1.45 (0.358 SD) | 1.49 (0.402 SD) | 1.48 (0.389 SD) | 0.34 |
| CVC/AVF, n (%) | 11 (10%)/94 (90%) | 10 (4%)/229 (96%) | 21 (6%)/323 (94%) | 0.08 |
| Presence of diabetes, n (%) | 54 (51%) | 81 (34%) | 135 (39%) | 0.009 |
| History of hypertensiona, n (%) | 100 (95%) | 226 (95%) | 326 (95%) | 0.97 |
| Smokers, n (%) | 15 (14%) | 65 (27%) | 80 (23%) | 0.03 |
| Hemoglobin, g/dl | 11.7 (1.21 SD) | 11.7 (1.18 SD) | 11.7 (1.19 SD) | 0.98 |
| Total protein, g/dl | 6.68 (0.529 SD) | 6.57 (0.527 SD) | 6.61 (0.529 SD) | 0.17 |
| Serum albumin, g/dl | 3.89 (0.421 SD) | 4.04 (0.404 SD) | 3.99 (0.414 SD) | 0.002 |
| Total cholesterol, mg/dl | 164 (39.1 SD) | 182 (45.2 SD) | 177 (44.2 SD) | 0.001 |
| High-sensitive CRP, mg/dl | 0.712 [0.319–1.21] | 0.377 [0.165–0.85] | 0.47 [0.196–0.96] | <0.001 |
| Use of statins, n (%) | 52 (50%) | 84 (35%) | 136 (40%) | 0.04 |
| Use of anticoagulation medication, n (%) | 28 (27%) | 24 (10%) | 52 (15%) | <0.001 |
| Use of antihypertensive medication, n (%) | 100 (95%) | 214 (90%) | 314 (91%) | 0.23 |
| SBP, mm Hg | 120 (17.5 SD) | 125 (15.8 SD) | 124 (16.5 SD) | 0.003 |
| DBP, mm Hg | 69.1 (11.6 SD) | 75.6 (11.4 SD) | 73.6 (11.8 SD) | <0.001 |
| PP, mm Hg | 50.6 (12.1 SD) | 49.8 (11.4 SD) | 50 (11.6 SD) | 0.57 |
| MBP, mm Hg | 92.3 (13.3 SD) | 98.4 (12.4 SD) | 96.5 (13 SD) | <0.001 |
| Heart rate, 1/min | 71.3 (10.3 SD) | 71.9 (10.2 SD) | 71.7 (10.2 SD) | 0.57 |
| All-cause mortality, n (%) | 59 (56%) | 56 (23%) | 115 (33%) | <0.001 |
| Cardiovascular mortality, n (%) | 20 (19%) | 27 (11%) | 47 (14%) | 0.16 |
Results are presented as mean (SD) and median [IQR] for normally and non-normally distributed data, respectively; categorical data as total number (percentage). P values present the results of group-wise comparisons (AF or HF versus no AF or HF). HF, heart failure; UFV, ultrafiltration volume; UF, ultrafiltration; CVC, central venous catheter; AVF, arteriovenous fistula; CRP, C-reactive protein; DBP, diastolic BP; PP, pulse pressure; MBP, mean BP.
a
History of hypertension was defined as either use of antihypertensive medication and/or 24-hour BP >140/90 mm Hg.