Document Detail

Endoscope-assisted microneurosurgery for anterior circulation aneurysms using the angle-type rigid endoscope over a 3-year period.
MedLine Citation:
PMID:  15221249     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: The use of the endoscope (fiberscope) to assist the microsurgical clipping of cerebral aneurysm was first reported by Fischer and Mustafa in 1994. The rigid endoscope has been increasingly used during aneurysm surgery in which structures around the aneurysm can be detected with high quality imaging. Our 3 years of its use now allows us to assess the endoscope's efficacy and limits in standard surgery with a pterional approach in aneurysms of the anterior circulation. The endoscope can carry out a supportive role in planning surgical manoeuvres and in verifying whether clipping has been performed correctly or not. In our view, among the aneurysms of the anterior circulation, the endoscope is particularly useful in those of the internal carotid and the anterior communicating arteries. In many cases of these aneurysms the posterior communicating artery, choroidal artery or one of the distal cerebral arteries is hidden behind the aneurysm dome. Dome retraction is often required in order to see these vascular structures with the microscope. Thus an endoscope with a 30 degrees view angle becomes very useful. The concealed areas are identified without retraction, which prevents the possibility of the aneurysm being ruptured and also reduces the use of temporary clipping. From its early use as a supportive measure that is sometimes useful in surgery for "easy" aneurysms, the endoscope has now become almost indispensable for the "difficult" aneurysms, including the large and giant ones before and after clipping. Thus, the endoscope should be kept ready for use in the operating theatre for any eventuality. OBJECTIVE: We assess the advantages and disadvantages of the use of the endoscope in the microsurgical treatment of intracranial aneurysms. METHODS: During our 3 years of experience, 52 patients with 48 ruptured and 10 unruptured aneurysms of the anterior circulation (including 6 cases of two-fold aneurysms) underwent clipping with endoscope support through a pterional approach. All ruptured aneurysms produced a Hunt and Hess Grade I or II subarachnoid haemorrhage. The endoscope was inserted before and after clipping in order to observe the conditions surrounding the aneurysm and to receive immediate confirmation that clipping had been performed correctly. RESULTS: In all cases general anatomy visualization was provided by the endoscope, and the correct clip positioning and vessel conditions were easily checked. In 4 cases the endoscope showed that the clip had been positioned incorrectly. Additional clipping was performed in these cases: in 2 cases the clip was re-applied correctly and in another case a clip was added. Only the fourth patient with a large communicating artery died (1.9%) of cerebral infarction. This was due to post-clipping stenosis of one distal cerebral artery in which it was not possible to re-position the clip correctly because of the presence of arteriosclerotic calcific plaque near the aneurysm neck. In 3 cases there was an intraoperative ruptured aneurysm dome that was not caused by the endoscope insertion. No further complications were caused by the endoscope. CONCLUSION: In certain cases endoscopic-assisted microsurgery is an exceptional aid to the surgeon and must become part of the operating theatre equipment and kept on hand ready for use. The endoscope is, in our opinion, particularly useful in certain aneurysm localisations (internal carotid artery-anterior communicating artery [ICA-ACOMA]).
Giovanni Profeta; R De Falco; G Ambrosio; L Profeta
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article     Date:  2004-06-23
Journal Detail:
Title:  Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery     Volume:  20     ISSN:  0256-7040     ISO Abbreviation:  Childs Nerv Syst     Publication Date:  2004 Nov 
Date Detail:
Created Date:  2004-10-25     Completed Date:  2005-02-28     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8503227     Medline TA:  Childs Nerv Syst     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  811-5     Citation Subset:  IM    
Department of Neurosurgery, Cardarelli Hospital, 80100 Naples, Italy.
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MeSH Terms
Evaluation Studies as Topic
Intracranial Aneurysm / surgery*
Microsurgery / methods*
Middle Aged
Neuronavigation / methods
Neurosurgical Procedures / methods*
Retrospective Studies
Surgical Instruments
Treatment Outcome
Vascular Surgical Procedures / methods
Video-Assisted Surgery

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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