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Artery Occlusion and Bypass for Aneurysms

What is artery occlusion and bypass?

Artery occlusion and bypass is a two-part procedure combining open microsurgery and endovascular coiling. The purpose of this procedure is to coil the entire diseased portion of the blood vessel and then bypass the blood flow to the specific location in the brain. The difference between this procedure and endovascular coiling is that this procedure closes down (occludes) the whole vessel rather than just putting coils in the aneurysm sac.

How is occlusion and bypass performed?

Bypass, the first part of the procedure, is an open microsurgical technique performed to use blood vessels as conduits to flow blood from one part of the brain into another. A previously identified donor vessel is detached from one end of its normal location and rerouted into the brain at a position beyond the aneurysm. The donor vessel is then reconnected to the parent vessel to ensure that blood continues to flow to the part of the brain that needs to receive it.

After the blood vessel has been bypassed, the next step is to close (occlusion) the diseased portion of the blood vessel containing the aneurysm using an endovascular technique called coiling. To close down the diseased vessel, coils are inserted into the vessel until it is completely filled. These coils will remain inside the brain permanently. Learn more about endovascular coiling.

Reasons for having artery occlusion and bypass performed

Artery occlusion and bypass may be performed to treat aneurysms that cannot be closed with standard methods.

There may be other reasons for your physician to recommend artery occlusion and bypass.

Treating aneurysms at Johns Hopkins

The Johns Hopkins Aneurysm Center Team evaluates each brain aneurysm patient to decide the best singular therapy or treatment combination for the patient’s specific case.

10-30% of aneurysms that are treated endovascularly will recur. The Johns Hopkins Aneurysm Center specializes in treating complex aneurysm recurrences, leading the field of neurosurgery expertise by using a combined open and endovascular approach for aneurysms that have recurred. Learn more about our team.

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To request an appointment or refer a patient, please contact the Johns Hopkins Aneurysm Center at 410-614-1533.
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