Table 3:

Hemodynamic features from rabbit aneurysms (N = 51) and human aneurysms

Hemodynamic FeaturesRabbit AneurysmsHuman Aneurysmsa
ReRange, 200–400Range, 200–50033,34
αRange, 2.5–5.0Range, 1.5–5.035
Flow patternType A: single stationary recirculation; type B: single stationary recirculation in lower sac and secondary transient recirculation in the dome4 Flow categories including types A and B2
Pressure difference between parent artery and sac (mm Hg)0.36 ± 0.19; Range, 0.1–0.50.89 ± 0.686; ∼0.52
OSIElevated 0.3–0.4 at neck (N = 51), sidewalls of sac (n = 15), dome (n = 18)Elevated OSI, 0.24–0.47 at neck, sidewall, and dome7,8
Spatially averaged WSS at peak systole (aneurysm sac, Pa)0.49 ± 0.62; Range, 0.02–3.21.64 ± 1.165; Range, 0.1–3.45
Spatially averaged TAWSS (aneurysm sac, Pa)0.13 ± 0.20; Range, 0.002–1.23
Spatially averaged WSS at peak systole (PPA, Pa)2.16 ± 0.93; Range, 1.02–4.893.64 ± 1.255
Spatially averaged TAWSS (PPA, Pa)0.81 ± 0.33; Range; 0.23–1.48
Location of maximum WSSDistal neck (n = 51)Neck3,5; often at distal neck4
Location of minimum WSSDome (<0.1 Pa)Dome35
  • a From published results.