Flow Diversion is an Endovascular Technique to divert the blood flow away from the aneurysm. Instead of inserting a device inside the aneurysm sac, as with coiling, a device is placed in the parent blood artery to divert blood flow away from the aneurysm. An unruptured brain aneurysm may be treated using a flow diversion technique. Flow diversion is one way for avoiding the riskiest phase of endovascular aneurysm treatment which is entering the aneurysm. By not putting a device into the aneurysm, the chance of it rupturing during surgery is considerably reduced.
For the procedure, the doctors use:
Flow diverters are stent-like devices that are used to treat aneurysms endovascularly. Flow diverters, rather than endosaccular filling, allow endoluminal (area inside the blood vessel) rebuilding. To promote aneurysm thrombosis, flow diverters affect the parent artery/aneurysm sac interface, such as by changing in-flow and out-flow jets. After the device is implanted, intrasaccular thrombosis develops. The stent is then covered by neointimal (scar tissue that forms within the blood vessel) overgrowth, which reconstructs the parent artery and eliminates the aneurysm/parent vascular interface. The origins of perforators are usually spared throughout this procedure.
Furthermore, when these procedures are utilized to repair fusiform aneurysms (Fusiform Aneurysms are the non-saccular dilatation that involves the entire vessel), they allow for the rebuilding of a smooth endothelial-covered channel that runs parallel to the parent artery. These characteristics are expected to contribute to a long-term reduction in rupture rates. The aneurysm shrinks and collapses around the device construct over time, reducing mass effect symptoms. Temporary perianeurysmal oedema in surrounding brain tissue may accompany the aneurysm’s thrombosis and accompanying inflammation. In order to achieve endoluminal reconstruction and aneurysm obliteration, flow diverters take advantage of hemodynamics, thrombosis, inflammation, healing, and endothelial regeneration.
Flow diverter procedures, unlike coil embolization, cause aneurysms to occlude over time rather than immediately at the end of the surgery. This explains why aneurysm occlusion rates with flow diverters continue to rise after 6 to 12 months.
At ABC, the flow diversion approach is frequently used to treat aneurysms. The following are some of the advantages:
Flow diverters offer a substantial paradigm shift in cerebral aneurysm endovascular treatment. These devices allow for neointima formation while diverting flow away from the aneurysm into the parent vessel, allowing for regeneration of the damaged segment. Aneurysm thrombosis occurs, followed by aneurysm shrinkage when the clot organizes and retracts. Early clinical experiences have been encouraging, with high rates of total aneurysm closure after thorough in vitro and in vivo trials.
However, there are worries about the devices’ side effects, which are mostly related to aneurysm rupture during the latency period and thromboembolic consequences. Furthermore, there are still unanswered problems about what happens to small crucial perforators after they are covered with flow diverters. To resolve some of these unresolved difficulties, careful investigation and follow-up of treated patients are required. Reach us out at ABC’s Customer Care number for expert advice and follow-ups.