title: Intraoperative angiographic assessment of graft patency during extracranial-intracranial bypass procedures.
abstract: The use of intraoperative angiography to monitor graft patency was retrospectively reviewed in extracranial-intracranial bypass procedures. Forty-two patients underwent 43 extracranial-intracranial bypass procedures with the use of intraoperative angiography. Superficial temporal artery (STA)-middle cerebral artery (MCA) bypass was performed in 41 patients (42 procedures) with ischemic cerebrovascular diseases, and vertebral artery-MCA bypass using radial artery graft for intentional ligation of the common carotid artery in one patient with nasopharyngeal carcinoma. Intraoperative angiography provided high-quality subtraction images in every case. There were no complications due to angiography. Graft occlusion was observed intraoperatively in three cases, but an additional procedure reopened the occluded graft in all three cases. Graft patency rate was 100% after surgery. Outcome was excellent in 40 patients and good in one patient who underwent STA-MCA bypass. Intraoperative angiography provides useful information regarding graft patency during bypass surgery. Intraoperative assessment prior to wound closure allows for the recognition and correction of technical failure and decreases the risk of postoperative complications.
authors: Department of Neurosurgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan. kyanaka@md.tsukuba.ac.jp
authors: Kiyoyuki
authors: K
authors: Yanaka
authors: Keishi
authors: K
authors: Fujita
authors: Shozo
authors: S
authors: Noguchi
authors: Yuji
authors: Y
authors: Matsumaru
authors: Hiroyuki
authors: H
authors: Asakawa
authors: Izumi
authors: I
authors: Anno
authors: Kotoo
authors: K
authors: Meguro
authors: Tadao
authors: T
authors: Nose
mesh_terms: D000328:Adult; D000368:Aged; D001807:Blood Vessel Prosthesis; D002533:Cerebral Angiography; D002548:Cerebral Revascularization; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D012189:Retrospective Studies; D014654:Vascular Patency / Q000502:physiology*