Cerebrovascular surgery is a group of delicate operations on brain blood vessels, including aneurysm clipping and the EC-IC bypass, which connects an artery outside the skull to one inside it. Their aim is to protect the brain from bleeding or from reduced blood supply. The treating team chooses the plan after studying each case, and no specific result can be guaranteed.
Both are done under general anesthesia with a microscope, after part of the skull is opened. For an aneurysm, the surgeon places a tiny metal clip across its neck to isolate it from the circulation. In a bypass, a scalp artery is joined to a brain artery to add a source of blood to an area with poor supply.
Surgery usually takes several hours; patients often spend the first days in intensive care, then stay in hospital for days to about two weeks. Activity returns gradually. Full recovery time varies with the condition before surgery and may range from weeks to months, with follow-up imaging.
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It aims to lower the risk of brain bleeding from an aneurysm or, in the case of a bypass, to improve blood flow to an area of the brain with reduced supply. The expected benefit depends on your condition and test results, and no specific result can be guaranteed.
Surgery may be considered for people with a cerebral aneurysm that needs treatment because of its size, position or shape, or with a blocked or severely narrowed brain artery that causes reduced blood supply when other options are not enough. The treating team decides after imaging and a full assessment.
Preparation usually includes vascular imaging by CT or MRI, blood and heart tests, and a review of medicines, especially blood thinners. Stopping smoking and fasting before surgery are often required, and the team explains the steps and the risks.
Under general anesthesia, the surgeon opens part of the skull and reaches the vessels with the help of a microscope. A clip is then placed on the neck of the aneurysm or, in a bypass, a scalp artery is joined to a brain artery. The bone is afterwards replaced and fixed in position.
The patient is often monitored in intensive care for the first days and then usually stays in hospital for a period ranging from several days to two weeks, depending on the condition. Rehabilitation may be recommended, and strenuous activity is restricted for a period set by the doctor.
The result of surgery is assessed with imaging after the operation and at later follow-up visits. Recovery time varies with the patient's condition before surgery, and the treating team sets the long-term follow-up schedule.
Brain surgery carries risks of bleeding, infection, stroke, seizures, brain swelling and temporary or permanent neurological weakness, in addition to anesthesia risks. These risks differ from case to case, and the surgeon explains them before the operation.
It leaves a scar on the scalp that is usually hidden by hair and becomes less visible with time. Its length and position depend on the area the surgeon needs to reach.
After leaving hospital, this surgery usually requires a stay that may extend to two weeks or more. The treating doctor confirms a suitable travel date after examining you and reviewing the imaging.
Follow-up visits and periodic imaging of the vessels are needed, and medicines to control blood pressure and cholesterol may be prescribed, along with stopping smoking. The treating team sets the schedule according to your condition.
