title: The cerebral hyperperfusion syndrome: diagnostic value of ocular pneumoplethysmography.
abstract: OBJECTIVE
  There were two purposes to our study. The first was to characterize the ocular hyperperfusion associated with carotid endarterectomy. The second was to relate ocular hyperperfusion to the clinical presentation of cerebral hyperperfusion syndrome.
  
  
  METHODS
  This was a retrospective chart review of 2331 patients who underwent carotid endarterectomy at our institution between June 1978 and May 1991.
  
  
  RESULTS
  Twelve of these carotid endarterectomies were associated with ocular hyperperfusion on the side of operation. Clinical evidence of cerebral hyperperfusion syndrome was observed in five of these 12 procedures. In these five patients there were two associated fatal intracerebral hemorrhages and one permanent coma. In the latter three patients the contralateral internal carotid arteries were totally occluded.
  
  
  CONCLUSIONS
  Ocular hyperperfusion, as documented with ocular pneumoplethysmography, is useful in alerting the physician to the potential for development of the cerebral hyperperfusion syndrome.
authors: Department of Surgery, Lehigh Valley Hospital Center, Allentown, PA 18103.
authors: G G
authors: GG
authors: Nicholas
authors: H
authors: H
authors: Hashemi
authors: W
authors: W
authors: Gee
authors: J F
authors: JF
authors: Reed
mesh_terms: D000388:Air; D000704:Analysis of Variance; D002339:Carotid Arteries / Q000503:physiopathology; D016893:Carotid Stenosis / Q000503:physiopathology / Q000601:surgery; D002561:Cerebrovascular Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000503:physiopathology; D016894:Endarterectomy, Carotid; D005123:Eye / Q000098:blood supply*; D006801:Humans; D010991:Plethysmography / Q000379:methods / Q000706:statistics & numerical data; D011183:Postoperative Complications / Q000175:diagnosis* / Q000453:epidemiology / Q000503:physiopathology; D012039:Regional Blood Flow; D012189:Retrospective Studies; D013577:Syndrome