Table 3.
Intradialytic hypotension definition and frequency
| Term | Definition | Overall | NS | Albumin | p |
|---|---|---|---|---|---|
| Nadir90 | Min IHD SBP < 90 mmHg | 53 (21.3%) | 31 (24.8%) | 22 (17.7%) | 0.093 |
| Nadir100 | Min IHD SBP < 100 mmHg | 111 (44.6%) | 56 (44.8%) | 55 (44.4%) | 0.926 |
| Fall20 | Pre-HD SBP-min IHD ≥ 20 | 103 (41.9%) | 59 (48.0%) | 44 (35.8%) | 0.026 |
| Fall30 | Pre-HD SBP-min IHD ≥ 30 | 69 (28.0%) | 40 (32.5%) | 29 (23.6%) | 0.041 |
| Fall20Nadir90 | Pre-HD SBP-min IHD ≥ 20 and min IHD SBP < 90 | 18 (7.3%) | 14 (11.4%) | 4 (3.3%) | 0.016 |
| Fall30Nadir90 | Pre-HD SBP-min IHD ≥ 30 and min IHD SBP < 90 | 12 (4.9%) | 9 (7.3%) | 3 (2.4%) | 0.099 |
| KDOQI | Pre-HD SBP-min IHD ≥ 20 and symptoms of cramping, headache, light-headedness, vomiting, or chest pain during HD | 28 (11.4%) | 19 (15.4%) | 9 (7.3%) | 0.002 |
| HEMO | Fall in SBP resulting in intervention of UF reduction, blood flow reduction, or 0.9% sodium chloride administration | 42 (16.9%) | 26 (20.8%) | 16 (12.9%) | 0.072 |
| Hypotension episodes | Episodes of hypotension recorded by the nurse | 81 (32.5%) | 42 (33.6%) | 39 (31.5%) | 0.718 |
Numbers as frequency and percentage
IHD intradialytic hypotension, SBP systolic blood pressure, UF ultrafiltration, KDOQI Kidney Disease Outcomes Quality Initiative, HEMO Hemodialysis Study