Visual evoke potential monitoring during pallidal surgery for dystonia under general anesthesia

Sankhe, Milind
July 2007
Journal of Pediatric Neurosciences;Jul-Dec2007, Vol. 2 Issue 2, p101
Academic Journal
INTRODUCTION: Use of VEP's (Visual Evoke Potentials) has been substantiated as useful monitoring technique during pallidal surgery under local anesthesia. We have used intraoperative VEP's to monitor and guide the placement in pallidal surgery for dystonia under general anesthesia. MATERIALS AND METHODS: Ten operations were performed in 8 patients under general anaesthesia. Recordings were obtained from 16 optic tracts in these patients. Macroelectrode stimulation of the optic tract was done. Lanency and amplitude changes were observed. Check MRI scan was performed in all cases. RESULTS: Flash VEP's were recordable under general anaesthesia in all patients. Macroestimulation evoked response was elicited in all but two cases. MRI scan confirmed the target placement in these cases. CONCLUSION: Flash VEP's can be recorded easily in patients under general anaesthesia. Macrostimulation evoked visual response is elicitable under general anaesthesia, facilitating the targeting of posteroventral pallidurn.


Related Articles

  • Standard and limitation of intraoperative monitoring of the visual evoked potential. Kodama, Kunihiko; Goto, Tetsuya; Sato, Atsushi; Sakai, Keiichi; Tanaka, Yuichiro; Hongo, Kazuhiro // Acta Neurochirurgica;Apr2010, Vol. 152 Issue 4, p643 

    Visual evoked potential (VEP) has been installed as one of the intraoperative visual function monitoring. It remains unclear, however, whether intraoperative VEP monitoring facilitates as a real time visual function monitoring with satisfactory effectiveness and sensitivity. To evaluate this,...

  • Time to revisit VEP monitoring? Neuloh, Georg // Acta Neurochirurgica;Apr2010, Vol. 152 Issue 4, p649 

    The author reflects on the re-introduction of intraoperative monitoring of visual-evoked potentials (VEP) monitoring system. It says that VEP recordings have a high intra-individual variability and instability which limits clinical usefulness of this method. The anesthetic regimen also influence...

  • Multimodality Intraoperative Neurophysiological Monitoring during Onyx Embolization of Cerebrovascular Malformations. Deshaies, Eric M.; Singla, Amit; Allott, Geoffrey; Villwock, Mark R.; Fenghua Li; Gorji, Reza // Neurodiagnostic Journal (ASET - The Neurodiagnostic Society);Mar2015, Vol. 55 Issue 1, p12 

    General anesthesia prohibits neurological examination during embolization of cerebrovascular malformations when provocative testing prior to pedicle occlusion is needed. Intraoperative neurophysiological monitoring (IONM) has the potential to fill this gap but remains relatively unexplored. We...

  • Do we need more anesthesia EEG indexes? J√§ntti, Ville // Journal of Clinical Monitoring & Computing;Apr2013, Vol. 27 Issue 2, p105 

    The author ponders if more anesthesia electroencephalography (EEG) indexes are needed. He notes the need for better correlation with anesthetic concentration and measures of consciousness. He cites the development of BIS index and then Narcotrend, Entropy and other indexes which were trimmed to...

  • AWARENESS UNDER GENERAL ANESTHESIA. Sigalovsky, Natalie // AANA Journal;Oct2003, Vol. 71 Issue 5, p373 

    Presents a review of the literature that reports findings associated with monitoring and occurrence of intraoperative awareness or explicit memory under general anesthesia. Incidence of awareness for patients receiving muscle relaxants and for those who were not given relaxants; Negative...

  • 'Parietal wasting' and dystonia secondary to a parasagittal mass lesion. Maramattom, Boby Varkey // Neurology India;Apr-Jun2007, Vol. 55 Issue 2, p185 

    The article presents a case of a woman who had a history of action dystonia in her right leg. A neurological examination conducted revealed that nerve conduction velocity, electromyographic studies and video electroencephalography were normal and distal wasting occurs only at the right foot as...

  • Effects of Acoustic Stimuli on Neuronal Activity in the Auditory Cortex of the Rat. ZHANG, Y.; HAN, L.; XIAO, X.; HU, B.; RUAN, H.; XIONG, Y. // Physiological Research;2011, Vol. 60 Issue 4, p687 

    Spontaneous activity of cortical neurons exhibits alternative fluctuations of membrane potential consisting of phased depolarization called "up-state" and persistent hyperpolarization called "down-state" during slow wave sleep and anesthesia. Here, we examined the effects of sound stimuli (noise...

  • The Full Capacity of AICAR to Reduce Obesity-Induced Inflammation and Insulin Resistance Requires Myeloid SIRT1. Zhenggang Yang; Xianfeng Wang; Yin He; Ling Qi; Liqing Yu; Bingzhong Xue; Hang Shi // PLoS ONE;Nov2012, Vol. 7 Issue 11, Special section p1 

    Chronic Inflammation is a key link between obesity and insulin resistance. We previously showed that two nutrient sensors AMP-activated protein kinase (AMPK) and SIRT1 interact to regulate macrophage inflammation. AMPK is also a molecular target of...

  • Anesthetic care of Roberts syndrome: A Case report. Khandrani, Jitesh; Rajput, Anant; Khan, A.; Nagrale, Manda // Internet Journal of Anesthesiology;2010, Vol. 24 Issue 2, p1 

    Roberts Syndrome is a rare genetic disorder, characterized by multiple systemic involvement. In this report we describe the presentation and management of a case of Roberts syndrome. We report this case of a 4 year old boy who presented with tetraphocomelia, operated cleft lip & palate, mild...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics