title: Bispectral index transiently decreased to "0" during per-embolization rupture of an intracranial aneurysm.
abstract: Interpreting a Bispectral Index (BIS) of "0", corresponding to an isolelectric electroencephalography, can be difficult. After ruling out technical issues, such as leads disconnection, several possible causes for a decrease in the BIS persists, including deep anesthesia, hypothermia, decrease in the cerebral perfusion pressure and cerebral ischemia. We report a sudden transient decrease of the BIS to "0" in a patient that underwent a coil embolization of a ruptured intracranial aneurysm and suggest that the change in BIS values could provide useful information about the cerebral hemodynamic during aneurysm treatment and might provide indications of a serious cerebral event.
authors.affiliation: Department of Anesthesiology and Intensive Care, Adolphe de Rothschild Fondation, 25-29 rue Manin, 75019 Paris, France. Electronic address: lynn.uhrig@gmail.com.
authors.forename: L
authors.initials: L
authors.lastname: Uhrig
authors.affiliation: Department of Anesthesiology and Intensive Care, Adolphe de Rothschild Fondation, 25-29 rue Manin, 75019 Paris, France.
authors.forename: J-M
authors.initials: JM
authors.lastname: Devys
authors.affiliation: Department of Interventional Neuroradiology, Adolphe de Rothschild Fondation, 25-29 rue Manin, 75019 Paris, France.
authors.forename: M
authors.initials: M
authors.lastname: Piotin
authors.affiliation: Department of Anesthesiology and Intensive Care, Adolphe de Rothschild Fondation, 25-29 rue Manin, 75019 Paris, France.
authors.forename: G
authors.initials: G
authors.lastname: Taylor
mesh_terms: D000768:Anesthesia, General; D017542:Aneurysm, Ruptured / Q000150:complications* / Q000628:therapy*; D002545:Brain Ischemia / Q000209:etiology; D002342:Carotid Artery, External / Q000502:physiology; D002533:Cerebral Angiography; D002560:Cerebrovascular Circulation; D056805:Consciousness Monitors; D004621:Embolization, Therapeutic / Q000009:adverse effects*; D005123:Eye / Q000098:blood supply; D006801:Humans; D007431:Intraoperative Complications / Q000175:diagnosis* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D012039:Regional Blood Flow / Q000502:physiology; D013345:Subarachnoid Hemorrhage / Q000150:complications* / Q000628:therapy*; D014057:Tomography, X-Ray Computed
keywords: Anévrisme intracrânien; Index bispectral; Intracranial aneurysm; Ispectral Index (BIS); Per-embolization rupture; Rupture per-embolisation