Table 1.
Baseline characteristics according to the presence or absence of any intradialytic hypotensive event (average systolic BP decline >20 mm Hg)
| Characteristica | All Subjects (n=66) | IDH (n=35) | No IDH (n=31) |
|---|---|---|---|
| Age, yr | 58 (49–66) | 54 (43–65) | 61 (53–67) |
| Female, % | 30 | 31 | 29 |
| Race, % | |||
| Asian | 35 | 14 | 58 |
| Black | 53 | 69 | 36 |
| Other | 1 | 3 | 0 |
| White | 11 | 14 | 6 |
| Vintage, yr | 2.4 (1.2–5.3) | 2.4 (1.1–5.7) | 2.4 (1.3–5.2) |
| Access, % | |||
| AV fistula | 69 | 65 | 74 |
| AV graft | 26 | 32 | 19 |
| Catheter | 5 | 3 | 7 |
| Diabetes, % | 64 | 69 | 58 |
| Hyperlipidemia, % | 61 | 71 | 48 |
| Hypertension, % | 85 | 91 | 77 |
| Ischemic heart disease, % | 48 | 40 | 58 |
| Heart failure, % | 26 | 34 | 16 |
| Coronary artery bypass graft, % | 14 | 9 | 19 |
| Arrhythmia, % | 32 | 43 | 19 |
| Smoking, % | |||
| Current | 8 | 11 | 3 |
| Never | 70 | 60 | 81 |
| Past | 23 | 29 | 16 |
| Weight, kg | 82 (68–95) | 89 (75–120) | 74 (65–90) |
| BMI, kg/m2 | 27 (24, 32) | 29 (26, 36) | 26 (22, 28) |
| Systolic BP, mm Hg | 141±23 | 143±26 | 138±21 |
| LVEF (%) | 55 (55–60) | 57 (55–60) | 55 (50–63) |
| Prior myocardial infarction, % | 9 | 9 | 10 |
| Beta blocker use, % | 64 | 62 | 67 |
| Calcium channel blocker use, % | 60 | 53 | 70 |
Values for continuous variables are given as mean±SD or median (25th–75th percentile). Percentages may not add up to 100 due to rounding. IDH, intradialytic hypotension; AV, arteriovenous; BMI, body mass index; LVEF, left ventricular ejection fraction.
a
Baseline refers to the average values over the first 2 weeks of the study.