Relevant bibliographies by topics / Intraoperative electrophysiology

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Academic literature on the topic 'Intraoperative electrophysiology'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Intraoperative electrophysiology"

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Fekete, Gábor, László Bognár, Emanuel Gutema, and László Novák. "Intraoperative electrophysiology in children – Single institute experience of 96 examinations." Neurology India 68, no. 2 (2020): 407. http://dx.doi.org/10.4103/0028-3886.284352.

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Augoustides, John, D. Joshua Mancini, and Francis Marchilinski. "An unusual cause of intraoperative confusion in the electrophysiology laboratory." Journal of Cardiothoracic and Vascular Anesthesia 16, no. 3 (June 2002): 351–53. http://dx.doi.org/10.1053/jcan.2002.124147.

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Hariharan, Praveen, Jeffery R. Balzer, Katherine Anetakis, Donald J. Crammond, and Parthasarathy D. Thirumala. "Electrophysiology of Olfactory and Optic Nerve in Outpatient and Intraoperative Settings." Journal of Clinical Neurophysiology 35, no. 1 (January 2018): 3–10. http://dx.doi.org/10.1097/wnp.0000000000000416.

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Hariharan, Praveen, Jeffery R. Balzer, Katherine Anetakis, Donald J. Crammond, and Parthasarathy D. Thirumala. "Electrophysiology of Olfactory and Optic Nerve in Outpatient and Intraoperative Settings." Journal of Clinical Neurophysiology 35, no. 4 (July 2018): 355–56. http://dx.doi.org/10.1097/wnp.0000000000000478.

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Sener, Ugur, Aman Dabir, and Christopher Cifarelli. "RADI-08. Elucidating the Electrophysiology of Intraoperative Radiotherapy – Experience from Two Cases." Neuro-Oncology Advances 3, Supplement_3 (August 1, 2021): iii19. http://dx.doi.org/10.1093/noajnl/vdab071.078.

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Abstract Brain metastases require multimodality treatment, often combining surgical resection, radiation therapy, and individualized systemic pharmacotherapy based on oncogenic drivers. Intraoperative radiation therapy (IORT) is an emerging treatment option where radiation is delivered directly to the resection cavity at the time of surgery. We present two patients who underwent electrocorticography (ECoG) during IORT, providing information regarding electrophysiologic safety and tolerability of the technique. In the first case, a 65-year-old woman underwent resection of a hemorrhagic right occipital metastasis from non-small cell lung cancer. IORT was administered over sixteen minutes for a surface dose of 30 Gy. In the second case, a 73-year-old man with underwent resection of a right posterior frontal metastasis from non-small cell lung cancer. IORT was delivered over eleven minutes for a surface dose of 30 Gy. In both cases, a 1x6 contact array of subdural electrodes was placed adjacent to the planned field of radiation. Electrocortigraphy (HFF 70 Hz, TC 0.3 sec, sensitivity 150uV/mm) was obtained from the array two minutes prior to initiation of therapy, during therapy, and two minutes after completion of therapy in both cases. We found that IORT did not induce electrophysiological change in the tissue surrounding it in both cases with no epileptiform or ictal discharges during 20 minutes of ECoG recording around the time radiation therapy, nor did the patients have episodes suggestive of epileptic seizures in the acute post-operative period. One of the patients (case 1) experienced a single epileptic seizure 4 months after IORT, but this was temporally related to a new intraparenchymal hemorrhage and unlikely due to radiation therapy. These two cases illustrate the relative safety of IORT with respect to induction of immediate epileptiform changes within the brain parenchyma.
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De Vloo, Philippe, Terhi J. Huttunen, Dalila Forte, Ivana Jankovic, Amy Lee, Mark Hair, Stephanie Cawker, et al. "Intraoperative electrophysiology during single-level selective dorsal rhizotomy: technique, stimulation threshold, and response data in a series of 145 patients." Journal of Neurosurgery: Pediatrics 25, no. 6 (June 2020): 597–606. http://dx.doi.org/10.3171/2019.12.peds19372.

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OBJECTIVESelective dorsal rhizotomy (SDR) is effective at permanently reducing spasticity in children with spastic cerebral palsy. The value of intraoperative neurophysiological monitoring in this procedure remains controversial, and its robustness has been questioned. This study describes the authors’ institutional electrophysiological technique (based on the technique of Park et al.), intraoperative findings, robustness, value to the procedure, and occurrence of new motor or sphincter deficits.METHODSThe authors analyzed electrophysiological data of all children who underwent SDR at their center between September 2013 and February 2019. All patients underwent bilateral SDR through a single-level laminotomy at the conus and with transection of about 60% of the L2–S2 afferent rootlets (guided by intraoperative electrophysiology) and about 50% of L1 afferent roots (nonselectively).RESULTSOne hundred forty-five patients underwent SDR (64% male, mean age 6 years and 7 months, range 2 years and 9 months to 14 years and 10 months). Dorsal roots were distinguished from ventral roots anatomically and electrophysiologically, by assessing responses on free-running electromyography (EMG) and determining stimulation thresholds (≥ 0.2 mA in all dorsal rootlets). Root level was determined anatomically and electrophysiologically by assessing electromyographic response to stimulation. Median stimulation threshold was lower in sacral compared to lumbar roots (p < 0.001), and 16% higher on the first operated (right) side (p = 0.023), but unrelated to age, sex, or functional status. Similarly, responses to tetanic stimulation were consistent: 87% were graded 3+ or 4+, with similar distributions between sides. This was also unrelated to age, sex, and functional status. The L2–S2 rootlets were divided (median 60%, range 50%–67%), guided by response to tetanic stimulation at threshold amplitude. No new motor or sphincter deficits were observed, suggesting sparing of ventral roots and sphincteric innervation, respectively.CONCLUSIONSThis electrophysiological technique appears robust and reproducible, allowing reliable identification of afferent nerve roots, definition of root levels, and guidance for rootlet division. Only a direct comparative study will establish whether intraoperative electrophysiology during SDR minimizes risk of new motor or sphincter worsening and/or maximizes functional outcome.
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Chen, Jie, Lei Xu, and Dong Tian. "Intraoperative Electrophysiology Examination of Median Nerve Showed the Quick Outcome of Carpal Tunnel Release." HAND 11, no. 1_suppl (September 2016): 91S. http://dx.doi.org/10.1177/1558944716660555fs.

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Preul, Mark C., Richard Leblanc, Fernando Cendes, Francois Dubeau, David Reutens, Roberto Spreafico, Giorgio Battaglia, et al. "Function and organization in dysgenic cortex." Journal of Neurosurgery 87, no. 1 (July 1997): 113–21. http://dx.doi.org/10.3171/jns.1997.87.1.0113.

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✓ Cerebral dysgenesis is a subject of interest because of its relationship to cerebral development and dysfunction and to epilepsy. The authors present a detailed study of a 16-year-old boy who underwent surgery for a severe seizure disorder. This patient had dysgenesis of the right hemisphere, which was composed of a giant central frontoparietal nodular gray matter heterotopia with overlying large islands of cortical dysplasia around a displaced central fissure. Exceptional insight into the function, biochemistry, electrophysiology, and histological structure of this lesion was obtained from neurological studies that revealed complementary information: magnetic resonance (MR) imaging, [18]fluoro-2-deoxy-d-glucose positron emission tomography (PET), functional PET scanning, proton MR spectroscopic (1H-MRS) imaging, intraoperative cortical mapping and electrocorticography, in vitro electrophysiology, and immunocytochemistry. These studies demonstrated compensatory cortical reorganization and showed that large areas of heterotopia and cortical dysplasia in the central area may retain normal motor and sensory function despite strikingly altered cytoarchitectonic organization and neuronal metabolism. Such lesions necessitate appropriate functional imaging studies prior to surgery and cortical mapping to avoid creating neurological deficits. Integrated studies, such as PET, 1H-MRS imaging, cortical mapping, immunocytochemistry, and electrophysiology may provide information on the function of developmental disorders of cerebral organization.
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Makarin, Viktor, Anna Uspenskaya, Arseniy Semenov, Natalya Timofeeva, Roman Chernikov, Ilya Sleptsov, Igor Chinchuk, et al. "INTRAOPERATIVE CONTINUOUS NEUROMONITORING OF LARYNGEAL RECCURENT NERVES IN PATIENTS WITH THYROID CANCER." Problems in oncology 65, no. 3 (March 1, 2019): 342–48. http://dx.doi.org/10.37469/0507-3758-2019-65-3-342-348.

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Laryngeal muscles paresis ranks second in prevalence of postoperative complications after thyroid surgery. Intraoperative neuromonitoring (IONM) of recurrent laryngeal nerve (RLN) results in reduction of cases with dysphonia and prevents such severe complication as bilateral paresis. Currently there are two types of monitoring: intermittent and continual. When using intermittent IONM surgeon has no opportunity to control electrophysiology state of RLN during intervals between stimulations. In case of continual IONM date on amplitude and latency are available to surgeon in real time every second, allowing him instantly react to any disturbance of neural transmission to prevent its damage by changing surgical manipulation. This work presents the first experience of using continual neuromonitoring of RLN in Russia, the procedure is described in details its safety. It is represented the possibility of prevention of bilateral laryngeal muscles paresis.
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van Ouwerkerk, Willem J. R., Rob L. M. Strijers, Frederik Barkhof, Ulco Umans, and W. Peter Vandertop. "Detection of Root Avulsion in the Dominant C7 Obstetric Brachial Plexus Lesion: Experience with Three-dimensional Constructive Interference in Steady-state Magnetic Resonance Imaging and Electrophysiology." Neurosurgery 57, no. 5 (November 1, 2005): 930–40. http://dx.doi.org/10.1227/01.neu.0000180813.10843.d4.

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Abstract OBJECTIVE: Preoperative, reliable detection by ancillary investigations of spinal nerve root avulsions in infants with severe obstetric brachial plexus lesions to avoid ineffective operative repair from deceivingly intact but actually avulsed nerve roots. METHODS: Ten infants were selected with an infrequent, severe dominant C7 lesion, primarily because of the anatomically distinct supraclavicular course of this spinal nerve. Three-dimensional constructive interference in steady-state magnetic resonance imaging (3D CISS MRI) studies under mild sedation were performed and evaluated for detection of avulsed nerve roots by two experienced neuroradiologists. Preoperative electrodiagnostics (electromyography and somatosensory evoked potentials) as well as intraoperative somatosensory potentials and muscle contractions after electrostimulation were recorded. Preoperative and intraoperative ancillary investigations were correlated with intraoperative findings in eight patients and clinical status in two children who recovered spontaneously. RESULTS: Despite two minor motion artifacts, the quality of the 3D CISS MRI studies was good. In 8 of 10 patients, prediction of root continuity was consistent with operative or clinical findings, and 2 remained doubtful. Preoperative and intraoperative electrodiagnostics tended not to correlate with intraoperative findings in this small, selected group. CONCLUSION: 3D CISS MRI provides good images of anterior and posterior spinal roots in infants with obstetric brachial plexus lesions. Images seem to allow accurate prediction of root avulsion in the majority of patients. In this study, electrodiagnostics were of limited value.
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Dissertations / Theses on the topic "Intraoperative electrophysiology"

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Leško, Róbert. "Přínos jednotlivých intraoperačních elektrofyziologických metod u dětských epileptochirurgických pacientů." Doctoral thesis, 2020. http://www.nusl.cz/ntk/nusl-435286.

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Epilepsy, as the most common chronic neurological disease, affects a significant part of population (0.5-1%). Drug resistant epilepsy has a significant negative effect on the quality of life, psychiatric comorbidities, neurocognitive performance and the risk of SUDEP in children. Therefore, resective epilepsy surgery, the only curative treatment of this condition, can fundamentally reverse this unfavorable prognosis. An inevitable prerequisite for a good postoperative result is complete removal of the epileptogenic zone (EC) and preservation of eloquent areas (EC). At present, even with improving and new preoperative non-invasive methods, we don't have an exclusive diagnostic method for theirs delineation. The aim of this PhD study is to assess benefit of individual intraoperative electrophysiological (iEF) methods in pediatric patients with focal intractable epilepsy. The first study evaluates the importance of intraoperative electrocorticography (iECoG) in the localization of EZ. The study proved that iECoG serves as a reliable tool to guide surgical resection and may predict results of epilepsy surgery. iECoG-based modification of surgical plan is not associated with increased risk of significant complications. The second presented study analyzed the contribution of intraoperative electrical...
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Books on the topic "Intraoperative electrophysiology"

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Intraoperative neurophysiological monitoring. 3rd ed. New York: Springer, 2011.

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Zouridakis, George. A concise guide to intraoperative monitoring. Boca Raton: CRC Press, 2001.

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Møller, Aage R. Intraoperative neurophysiological monitoring. 2nd ed. Totowa, N.J: Humana Press, 2006.

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Intraoperative neurophysiological monitoring. 2nd ed. Totowa, N.J: Humana Press, 2006.

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Zouridakis, George. A concise guide to intraoperative monitoring. Boca Raton: CRC Press, 2001.

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Zouridakis, George. A concise guide to intraoperative monitoring. Boca Raton: CRC Press, 2001.

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Zouridakis, George. A concise guide to intraoperative monitoring. Boca Raton: CRC Press, 2001.

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Zouridakis, George. A concise guide to intraoperative monitoring. Boca Raton: CRC Press, 2001.

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Zouridakis, George. A concise guide to intraoperative monitoring. Boca Raton: CRC Press, 2001.

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Zouridakis, George. A concise guide to intraoperative monitoring. Boca Raton: CRC Press, 2001.

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Book chapters on the topic "Intraoperative electrophysiology"

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Schmidt, Ehud J., Charles L. Dumoulin, and Stephan A. Danik. "Image-Guided Cardiac Electrophysiology Procedures Focusing on MRI Guidance." In Intraoperative Imaging and Image-Guided Therapy, 701–24. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7657-3_54.

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Hoshide, Reid R., and William R. Taylor. "Intraoperative Electrophysiologic Monitoring." In Lateral Access Minimally Invasive Spine Surgery, 67–72. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28320-3_9.

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Milde, Leslie Newberg. "Intraoperative Electrophysiologic Monitoring." In Anesthesia and the Central Nervous System, 81–91. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1610-7_6.

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Pang, Dachling. "Intraoperative Electrophysiology Monitoring." In Techniques in Neurosurgery. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-81267-6_3.

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Novak, Klaus, and Stefan Oberndorfer. "Electrophysiology and intraoperative neurophysiological monitoring." In Handbook of Clinical Neurology, 149–61. Elsevier, 2012. http://dx.doi.org/10.1016/b978-0-444-52138-5.00012-8.

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Klassen, Bryan T. "Deep Brain Stimulation Electrophysiology." In Clinical Neurophysiology, 730–44. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190259631.003.0044.

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Deep brain stimulation (DBS) is a therapy for medically refractory movement disorders, and the indications for DBS are likely to expand to other neurological and psychiatric diseases. DBS involves the delivery of electrical current to specific brain targets using a permanently implantable stimulating electrode that is surgically placed under stereotactic guidance. The efficacy and side effects of DBS are directly related to the position of the implantable stimulating electrode. While current imaging modalities help define an initial trajectory to the target region, most centers also rely on neurophysiological confirmation of electrode position. High-impedance microelectrode recording can define both spontaneous and stimulus-evoked firing patterns of the cells along the lead’s trajectory. By comparing these findings to those expected, one can determine whether the electrode’s final position is as intended. The effects encountered during intraoperative test stimulation delivered through the implanted electrode further define the accuracy of positioning. Stimulation parameters can be refined in the outpatient setting in order to provide the maximum benefit and least side effects.
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So, Elson L., and Frank W. Sharbrough. "Cerebral Function Monitoring." In Clinical Neurophysiology, 727–38. Oxford University Press, 2009. http://dx.doi.org/10.1093/med/9780195385113.003.0042.

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Intraoperative electrophysiologic monitoring of cerebral function during cardiovascular surgery requires a thorough knowledge of the effect of anesthetic agents on electrophysiologic signals. Although there are variations among anesthetic agents and their effects on the EEG, most of the agents produce similar changes that can be recognized and distinguished from the effects of ischemia. Success of the monitoring also depends heavily on the technical aspects of recording, such as the timescale of the EEG display and adjustment of the anesthetic agent used.
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Strommen, Jeffrey A. "Spinal Cord Monitoring." In Clinical Neurophysiology, 751–76. Oxford University Press, 2009. http://dx.doi.org/10.1093/med/9780195385113.003.0044.

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Continuous electrophysiologic monitoring of spinal cord or spinal nerve (or both) function intraoperatively can minimize potential damage that may occur during spine surgery. SEPs are easiest to use for monitoring function and have had the widest application. Unless spinal cord injury is caused by a vascular insult, with purely motor damage, SEP monitoring can identify the damage early enough to alert the surgeon. The addition of MEP monitoring further protects the motor pathways that may be at risk during some spinal procedure. Neurotonic discharges recorded from peripheral muscle are sensitive to nerve root irritation and, thus, can help surgeons recognize when and where damage may be occurring. These techniques appear reliable and with experience the neurophysiologist can acquire the skills to perform and correctly interpret these studies thus enhancing the neurologic and functional outcomes during the often complex procedures.
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