Table 2.
Vascular Hemodynamics
| Ascending Aorta | Descending Aorta | |||
|---|---|---|---|---|
| PAH | Control | PAH | Control | |
| PWV (m/s) | 3.4 (3.1 - 4.0)* | 2.3 (1.8 - 3.4) | 3.3 (2.8 - 3.9) | 3.1 (2.6 - 3.6) |
| Qmax (L/min) | 18.0 ± 6.7 | 21.0 ± 5.2 | 10.4 ± 4.6 | 12.1 ± 2.8 |
| Vmax (cm/s) | 113 ± 27 | 117 ± 22 | 107 ± 25 | 102 ± 45 |
| Amax (cm2) | 4.5 ± 1.7* | 5.3 ± 1.0 | 2.8 ± 0.9 | 3.0 ± 0.7 |
| Amin (cm2) | 3.5 ± 1.4 | 3.7 ± 0.7 | 1.9 ± 0.7 | 2.2 ± 0.5 |
| RAC (%) | 23 (16-25) ** | 29 (26 - 31) | 23 (21-27) | 25 (21 - 29) |
| Distensibility (%/mmHg) | 0.47 ± 0.26* | 0.64 ± 0.21 | 0.56 ± 0.28 | 0.62 ± 0.26 |
| Capacitance (mL/mmHg) | 1.51 ± 0.27 | 1.81 ± 0.73 | --- | --- |
| WSSmax (dyne/cm2) | 9.5 ± 3.6 | 8.5 ± 2.4 | 10.7 ± 2.9 | 10.5 ± 2.4 |
| OSI | 0.04 ± 0.04 | 0.03 ± 0.03 | 0.03 ± 0.04 * | 0.01 ± 0.00 |
Data are expressed as averages ± SD or medians with inter-quantile range.
Significant associations (P < 0.05) are in bold.
**
P <0.001
PWV = pulse wave velocity, WSSmax = systolic wall shear stress, OSI = Oscillatory Shear Index
RAC = relative area change, Vmax = maximum velocity,