[Different methods of intracranial-extracranial bypass surgery for the treatment of intracranial aneurysms].
OBJECTIVE
To investigate the effects and methods of intracranial-extracranial (IC-EC) bypass surgery in the treatment of intracranial aneurysms.


METHODS
The clinical material of 9 cases, who performed IC-EC bypass surgery before occlusion of the parental arteries of intracranial aneurysms, was studied retrospectively, especially how to evaluate the co-lateral circulation of the parental arteries and how to select the different methods of IC-EC bypass surgery.


RESULTS
The co-lateral circulation in 9 cases was not enough to meet the need of the cerebral blood flow after occlusion of the parental arteries of the aneurysms. Revascularization by different methods of IC-EC bypass surgery and then occlusion of the parental arteries, ischemia in the brain area feeding by occluded parental arteries of the aneurysms did not occurred.


CONCLUSIONS
When the co-lateral circulation of the parental arteries of intracranial aneurysm is not enough, the revascularization by different methods of IC-EC bypass surgery is needed before occlusion of these arteries.
Li
Meng
M
Department of Neurosurgery, Xuanwu Hospital, Capital University of Medical Sciences, Beijing 100053, China.
Zhang
Hong-qi
HQ
Jian
Feng-zeng
FZ
Zhang
Peng
P
Zhi
Xing-long
XL
Ling
Feng
F
D000293:Adolescent; D000328:Adult; D002548:Cerebral Revascularization / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002532:Intracranial Aneurysm / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies