title: Posterior circulation hyperperfusion syndrome after bilateral vertebral artery intracranial stenting.
abstract: Hyperperfusion syndrome is a well-documented clinical complication after endarterectomy and carotid stenting. However, little is known about this complication immediately after vertebral artery stenting. A 51-year-old woman who had repeated episodes of dizziness, nausea, and vomiting was diagnosed with vertebrobasilar insufficiency. Diffusion-weighted magnetic resonance imaging showed a lesion in the posterior inferior cerebellar artery territory. The patient underwent bilateral vertebral stenting due to severe stenosis in both intracranial segments of the vertebral arteries. Three hours after the procedure, she had severe headache with vomiting and gradually went into a coma. An urgent brain computed tomographic scan showed hemorrhage in the right cerebellum and subarachnoid region. Also, transcranial Doppler revealed approximate doubling of blood flow velocity in vertebral artery area compared with her baseline value. Cerebral blood flow and blood pressure monitoring, together with intensive antihypertensive therapy, are necessary to reduce the risk of hyperperfusion syndrome after vertebral stenting. Moreover, the safety and efficacy of intracranial vertebral stenting should be further reevaluated by large-scale randomized trials.
authors.affiliation: Department of Neurology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu Province, People's Republic of China.
authors.forename: Renliang
authors.initials: R
authors.lastname: Zhang
authors.forename: Guangyi
authors.initials: G
authors.lastname: Zhou
authors.forename: Gelin
authors.initials: G
authors.lastname: Xu
authors.forename: Xinfeng
authors.initials: X
authors.lastname: Liu
mesh_terms: D000800:Angioplasty, Balloon / Q000009:adverse effects / Q000295:instrumentation; D000959:Antihypertensive Agents / Q000627:therapeutic use; D001783:Blood Flow Velocity; D001794:Blood Pressure; D002533:Cerebral Angiography; D002560:Cerebrovascular Circulation; D002561:Cerebrovascular Disorders / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology* / Q000503:physiopathology; D003128:Coma / Q000209:etiology / Q000503:physiopathology; D004244:Dizziness / Q000209:etiology / Q000503:physiopathology / Q000628:therapy; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008875:Middle Aged; D009325:Nausea / Q000209:etiology / Q000503:physiopathology / Q000628:therapy; D015607:Stents; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D017585:Ultrasonography, Doppler, Transcranial; D014715:Vertebrobasilar Insufficiency / Q000150:complications / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D014839:Vomiting / Q000209:etiology / Q000503:physiopathology / Q000628:therapy
chemical_list: D000959:Antihypertensive Agents