Table 2 Between groups comparison of the main features of the vasoreactivity curve
Features | Young | Old | p value |
|---|---|---|---|
BASE (mm) | 3.6 ± 0.5 | 4.4 ± 0.7 | 0.002 |
PRE (mm) | 3.5 ± 0.5 | 4.5 ± 0.6 | 0.001 |
NIL (mm) | 3.5 ± 0.5 | 4.4 ± 0.6 | 0.001 |
PEAK (mm) | 3.9 ± 0.5 | 4.5 ± 0.7 | 0.015 |
Time to NIL (sec) | 10 ± 4 | 14 ± 9 | 0.126 |
Time to PEAK (sec) | 41 ± 16 | 59 ± 26 | 0.297 |
Magnitude of Decrease (% Δ) | 2.2 ± 0.8 | 0.4 ± 2.1 | 0.015 |
BAFMD (% Δ) | 7.7 ± 3.5 | 2.6 ± 1.2 | 0.001 |
Resting Blood Flow (ml/min) | 131 ± 63 | 232 ± 131 | 0.046 |
Hyperemic Blood Flow (ml/min) | 396 ± 95 | 495 ± 199 | 0.161 |
Mean Wall Shear Rate (s-1) | 191 ± 64 | 135 ± 63 | 0.064 |