Table 3. Side-to-side comparison of extracranial hemodynamic variables, measured before and during hemodialysis.
| Hemodynamic variables | ΔHD-baseline | P value | ΔHD-baseline (%) | P value | ||
|---|---|---|---|---|---|---|
| AV access side | Opposite side | AV access side | Opposite side | |||
| Common carotid artery | ||||||
| PSV, cm/sec | -6.7 ± 10.2 | -3.0 ± 12.9 | 0.012 | -9.2 ± 12.4 | -3.0 ± 12.9 | < 0.001 |
| FV, mL/min | -94.3 ± 109.7 | -52.6 ± 119.1 | 0.007 | -16.5 ± 17.8 | -5.2 ± 23.4 | < 0.001 |
| Vertebral artery | ||||||
| PSV, cm/sec | -4.2 ± 6.7 | -1.7 ± 6.7 | 0.009 | -8.7 ± 12.1 | -1.7 ± 11.0 | < 0.001 |
| FV, mL/min | -11.9 ± 23.1 | -1.3 ± 23.1 | 0.002 | -15.1 ± 21.5 | -0.5 ± 21.7 | < 0.001 |
| Sum of FVs of CCA and VA | -105.7 ± -115.5 | -53.7 ± 123.5 | 0.001 | -16.3 ± 15.7 | -6.8 ± 18.7 | < 0.001 |
Values are mean ± standard deviation; Δ means change of variable during hemodialysis to compare with before hemodialysis.
HD, hemodialysis; AVF, arteriovenous fistula; PSV, peak systolic velocity; FV, flow volume.