Aneurysm hemodynamics: an experimental study.

TLDR

Understanding aneurysm hemodynamics can help identify aneurysms at higher risk of rupture, growth, or thrombosis. The study aimed to investigate blood flow within aneurysms. A canine model was employed, using angiography and color Doppler to assess lateral, bifurcation, and terminal aneurysm hemodynamics. Experimental aneurysm flow is largely predictable and non‑turbulent, varying mainly with the aneurysm’s relationship to its parent artery, confirming prior in vitro findings that aneurysms exhibit diverse hemodynamic stresses.

Abstract

PURPOSE To study the flow of blood in aneurysms. METHODS A canine model was used to study the hemodynamics of lateral, bifurcation, and terminal aneurysms with angiography and color Doppler techniques. FINDINGS Flow within experimental aneurysms, although not laminar, is seldom if ever turbulent, but rather is highly predictable, varying primarily according to the relationship of the aneurysm to its parent artery. CONCLUSIONS These studies support earlier in vitro work and provide further evidence that not all aneurysms share similar stresses. A more complete understanding of these hemodynamic features will be useful in the establishment of criteria that allow recognition of those aneurysms that are more or less likely to rupture, to grow, or to thrombose.