title: Cerebral hyperperfusion syndrome following the excision of a mycotic aneurysm with superficial temporal artery-to-middle cerebral artery bypass: case report.
abstract: The authors report a rare case of cerebral hyperperfusion syndrome (HPS) following the excision of a mycotic aneurysm with superficial temporal artery-to-middle cerebral artery (STA-MCA) bypass. A 74-year-old woman with infective endocarditis presented with progressive cerebral infarction and subarachnoid hemorrhage due to a mycotic aneurysm, which was excised with a STA-MCA bypass. Postoperatively, the patient developed HPS that was considered to be exacerbated by a previous ischemic event. Therefore, cerebral hemodynamics should be evaluated before bypass surgery to prevent subsequent hyperperfusion.
authors.affiliation: Department of Neurosurgery, St. Marianna University School of Medicine.
authors.forename: Hidemichi
authors.initials: H
authors.lastname: Ito
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Taigen
authors.initials: T
authors.lastname: Sase
authors.forename: Masashi
authors.initials: M
authors.lastname: Uchida
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Yoshida
authors.forename: Yohtaro
authors.initials: Y
authors.lastname: Sakakibara
authors.forename: Takuo
authors.initials: T
authors.lastname: Hashimoto
mesh_terms: D000368:Aged; D000785:Aneurysm, Infected / Q000601:surgery*; D001921:Brain / Q000098:blood supply*; D002533:Cerebral Angiography; D002544:Cerebral Infarction / Q000175:diagnosis / Q000601:surgery; D002548:Cerebral Revascularization / Q000379:methods*; D038524:Diffusion Magnetic Resonance Imaging; D004697:Endocarditis, Bacterial / Q000150:complications; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000601:surgery*; D011183:Postoperative Complications / Q000175:diagnosis* / Q000209:etiology*; D013290:Streptococcal Infections / Q000150:complications; D013295:Streptococcus mutans