title: Endovascular repair of posterior communicating artery aneurysms, associated with oculomotor nerve palsy: A review of nerve recovery.
abstract: OBJECTIVE
  Oculomotor nerve palsy (ONP) is often the presenting symptom in patients with posterior communicating artery (PCOMM) aneurysms with variable recovery of oculomotor nerve function following treatment. In this study we report the ophthalmologic outcome of 20 patients treated by endovascular coiling for PCOMM aneurysm-induced ONP.
  
  
  METHODS
  We performed 230 PCOMM aneurysm endovascular coilings between the years 2006 and 2011, of which 20 cases presented with ONP. We recorded the degree of nerve recovery - complete, partial or none - while also documenting other predictive factors, such as degree of pre-intervention nerve deficit, presence of subarachnoid haemorrhage (SAH), size and location of the PCOMM aneurysm and length of follow-up.
  
  
  RESULTS
  Of the 20 patients, 9 (45%) presented with complete ONP and 11 (55%) with partial ONP. After an average follow-up period of 16 months, all patients achieved oculomotor nerve recovery; 9 (45%) patients had complete recovery and 11 (55%) patients had partial recovery. Of the 9 patients who presented with complete ONP, 5 (56%) patients made a complete recovery and 4 (44%) made a partial recovery. Of the 11 patients who initially presented with partial ONP, 4 (36%) made a complete recovery and 7 (64%) made a partial recovery. 7 (35%) patients also had a SAH, of whom 3 (43%) made a complete recovery with 4 (57%) making a partial recovery.
  
  
  CONCLUSIONS
  ONP can occur with PCOMM aneurysm with or without SAH. Endovascular coiling is an effective treatment for ONP due to PCOMM aneurysms.
authors.affiliation: Radiology Department, Beaumont Hospital, Dublin, Ireland marksheehan@rcsi.ie.
authors.forename: Mark John
authors.initials: MJ
authors.lastname: Sheehan
authors.affiliation: Radiology Department, Brigham and Women's Hospital, Boston MA, USA.
authors.forename: Ruth
authors.initials: R
authors.lastname: Dunne
authors.affiliation: Radiology Department, Beaumont Hospital, Dublin, Ireland.
authors.forename: John
authors.initials: J
authors.lastname: Thornton
authors.affiliation: Radiology Department, Beaumont Hospital, Dublin, Ireland.
authors.forename: Paul
authors.initials: P
authors.lastname: Brennan
authors.affiliation: Radiology Department, Beaumont Hospital, Dublin, Ireland.
authors.forename: Seamus
authors.initials: S
authors.lastname: Looby
authors.affiliation: Radiology Department, Beaumont Hospital, Dublin, Ireland.
authors.forename: Alan
authors.initials: A
authors.lastname: O'Hare
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004621:Embolization, Therapeutic / Q000379:methods*; D057510:Endovascular Procedures / Q000379:methods*; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications* / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D015840:Oculomotor Nerve Diseases / Q000209:etiology* / Q000628:therapy*; D012189:Retrospective Studies; D013345:Subarachnoid Hemorrhage / Q000209:etiology / Q000628:therapy; D016896:Treatment Outcome
keywords: Brain; aneurysm; endovascular; oculomotor; posterior communicating artery