Are all cerebral vascular bypass surgeries performed as open craniotomies?

In general, cerebral vascular bypass surgery requires craniotomy. The detailed analysis is as follows:

Cerebral vascular bypass surgery is typically used to treat ischemic moyamoya disease and is a type of open cranial surgery. Ischemic moyamoya disease, caused by cerebrovascular malformations, often leads to symptoms such as hallucinations, intellectual decline, and impaired consciousness. Therefore, during cerebral vascular bypass surgery, malformed blood vessels in the brain—such as the origin of the arteries, anterior cerebral arteries, and terminal ends of bilateral internal carotid arteries—need to be reconnected. Although this surgery requires craniotomy and carries certain risks, it usually does not damage brain tissue. After surgery, patients must strictly follow medical advice for postoperative care to prevent infections. If complications such as cerebral infarction or confusion occur after surgery, immediate medical attention is required.

Patients scheduled for cerebral vascular bypass surgery are advised to maintain a positive mindset and avoid excessive anxiety. Prolonged bed rest is necessary after surgery. A light diet is recommended, and patients should be turned regularly to prevent muscle atrophy.