• Susanna Bacigaluppi, Marco Fontanella, Pirjo Manninen, Alessando Ducati, Giovanni Tredici, and Fred Gentili.
• Department of Neurosciences and Biomedical Technologies, University of Milano Bicocca, Monza, Italy. susannabacigaluppi@yahoo.it
• World Neurosurg. 2012 Sep 1;78(3-4):276-88.

ObjectiveTo describe the application of intraoperative monitoring techniques during aneurysm surgery and to discuss the advantages and limitations of these techniques in prevention of postoperative neurologic deficits.MethodsArticles found in the literature through PubMed for the time frame 1980-2011 and the authors' personal files were reviewed.ResultsVarious techniques for detection of vascular insufficiency are available, including direct methods to measure cerebral blood flow and indirect methods to evaluate the integrity of neurologic pathways.ConclusionsThe choice of monitoring modality should be governed by the vessel and by the vascular territory most at risk during the planned procedure with proper awareness of the potential limits related to each technique. Aneurysm surgery monitoring should help to address issues of continuity and provide a morphologic and functional assessment. Although the use of monitoring devices is still not routine in aneurysm surgery and no standards have been established, combining different monitoring techniques is crucial to optimize aneurysm surgery and avoid or minimize complications.Copyright © 2012 Elsevier Inc. All rights reserved.

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