title: Ipsilateral hyperperfusion after neck clipping of a giant internal carotid artery aneurysm. Case report.
abstract: A 48-year-old woman exhibited hyperperfusion soon after undergoing a successful clip operation involving multiple clip placement for a giant internal carotid artery (ICA) aneurysm. Intraarterial digital subtraction angiography demonstrated a left paraclinoid giant aneurysm. Multiple clips were placed to obliterate the aneurysm during a 7-minute temporary ICA occlusion. Intraoperative Doppler ultrasound flowmetry showed that the blood flow through the ICA distal to the aneurysm increased from 71.6 ml/minute before clipping to 123.3 ml/minute after. The patient exhibited right hemiparesis and motor aphasia after the operation. Postoperative imaging studies revealed an increase in perfusion and diffuse edema in the left cerebral cortex. The symptoms and diffuse brain edema gradually resolved. In this case, increase in blood flow through the ICA distal to the aneurysm may have played an important role in the circulatory disturbance.
authors.affiliation: Department of Neurosurgery, Ashikaga Red Cross Hospital, Ashikaga-city, Tochigi, Japan. hidekim@mail2.takauji.or.jp
authors.forename: Hideki
authors.initials: H
authors.lastname: Murakami
authors.forename: Makoto
authors.initials: M
authors.lastname: Inaba
authors.forename: Akiyoshi
authors.initials: A
authors.lastname: Nakamura
authors.forename: Takakazu
authors.initials: T
authors.lastname: Ushioda
mesh_terms: D002340:Carotid Artery Diseases / Q000175:diagnosis / Q000601:surgery*; D002343:Carotid Artery, Internal / Q000601:surgery; D002560:Cerebrovascular Circulation; D002561:Cerebrovascular Disorders / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis / Q000601:surgery*; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000009:adverse effects*; D014656:Vascular Surgical Procedures / Q000009:adverse effects*