Table 6 The peak blood velocity of veins measured in elderly group (≥ 55 years old, n = 11)
Velocity(cm/s) | Without GCS | With GCS | P-value | Alteration% |
|---|---|---|---|---|
GSV peak velocity | 10.1 ± 3.9 | 12.2 ± 8.1 | 0.39 |  + 20.8% |
CFV peak velocity | 16.9 ± 6.4 | 14.9 ± 5.9 | 0.08 | -11.8% |
Junction peak velocity | 23.9 ± 11.7 | 23.4 ± 12.1 | 0.42 | -2.1% |
GSV mean velocity | 5.9 ± 2.4 | 6.9 ± 4.4 | 0.48 |  + 16.9% |
CFV mean velocity | 9.2 ± 3.5 | 8.4 ± 3.4 | 0.08 | -8.7% |
Junction mean velocity | 14.2 ± 7.2 | 13.8 ± 7.4 | 0.53 | -2.8% |