Table 2 Laboratory and bioelectrical impedance analysis characteristics.
Characteristics | Overall N = 647 | Hypotensive N = 215 | Stable N = 306 | Hypertensive N = 126 | p value |
|---|---|---|---|---|---|
Serum laboratory characteristics | |||||
Na pre-HD (mmol/L) | 138.5 ± 3.4 | 138.5 ± 3.5 | 138.4 ± 3.4 | 138.5 ± 3.1 | 0.982 |
Na post-HD (mmol/L) | 138.7 ± 2.3 | 138.6 ± 2.3 | 138.5 ± 2.4 | 139.1 ± 2.3 | 0.056 |
Na decrease (mmol/L) | − 0.2 ± 3.3 | − 0.1 ± 3.3 | − 0.1 ± 3.3 | − 0.7 ± 3.3 | 0.241 |
K pre-HD (mmol/L) | 5.0 ± 0.6 | 5.0 ± 0.7 | 5.0 ± 0.6 | 4.9 ± 0.7 | 0.123 |
K post-HD (mmol/L) | 3.4 ± 0.4 | 3.4 ± 0.4 | 3.4 ± 0.4 | 3.4 ± 0.4 | 0.326 |
K decrease (mmol/L) | 1.5 ± 0.6 | 1.6 ± 0.6 | 1.6 ± 0.6 | 1.5 ± 0.7 | 0.283 |
Urea pre-HD (mmol/L) | 18.1 ± 5.6 | 18.9 ± 5.7 | 17.8 ± 5.5 | 17.4 ± 5.3 | 0.024 |
Urea post-HD (mmol/L) | 4.4 (3.2–5.8) | 4.4 (3.2–6.0) | 4.4 (3.2–5.8) | 4.4 (3.3–5.5) | 0.888 |
Urea decrease (mmol/L) | 13.3 ± 4.1 | 14.1 ± 4.2 | 13.0 ± 4.2 | 12.7 ± 3.9 | 0.003 |
Glucose pre-HD (mmol/L) | 6.5 (5.4–7.8) | 6.7 (5.5–8.3) | 6.3 (5.4–7.5) | 6.6 (5.5–7.8) | 0.098 |
Bioelectrical impedance analysis characteristics | |||||
ECW pre-HD (L) | 14.9 ± 3.7 | 15.0 ± 3.6 | 14.9 ± 3.7 | 14.8 ± 3.5 | 0.929 |
ECW post-HD (L) | 13.9 ± 3.5 | 13.8 ± 3.6 | 13.9 ± 3.6 | 13.9 ± 3.2 | 0.918 |
TBW pre-HD (L) | 37.3 ± 9.3 | 37.4 ± 8.8 | 37.4 ± 9.5 | 37.0 ± 9.6 | 0.904 |
TBW post-HD (L) | 35.3 ± 8.8 | 35.2 ± 8.6 | 35.5 ± 9.1 | 35.1 ± 8.2 | 0.896 |
ECW/TBW pre-HD (%) | 40.0 ± 1.4 | 40.0 ± 1.6 | 40.0 ± 1.4 | 40.3 ± 1.3 | 0.044 |
ECW/TBW post-HD (%) | 39.3 ± 1.6 | 39.3 ± 1.8 | 39.3 ± 1.6 | 39.6 ± 1.5 | 0.034 |
Smooth muscle mass index (kg/m2) | 9.8 ± 1.7 | 9.9 ± 1.6 | 9.8 ± 1.8 | 9.6 ± 1.7 | 0.264 |
Body fat mass index (kg/m2) | 8.4 ± 4.9 | 9.1 ± 5.3 | 8.3 ± 4.7 | 7.5 ± 4.5 | 0.018 |
