BrainWaves: A Neurology Podcast

#30 GBS: 2021 Update

This week on the program, we have remastered one of our earliest (and most interesting!) episodes on Guillain-Barre syndrome. With an important announcement from Jim Siegler. Produced by James E. Siegler. Music courtesy of Lee Rosevere. The opening theme was composed by Jimothy Dalton. Sound effects by Mike Koenig and Daniel Simion. Unless otherwise mentioned in the podcast, no competing financial interests exist in the content of this episode. BrainWaves' podcasts and online content are intended for medical education only and should not be used for clinical decision making. Be sure to follow us on Twitter @brainwavesaudio for the latest updates to the podcast. REFERENCES 1. Dimachkie MM and Saperstein DS. Acquired immune demyelinating neuropathies. Continuum (Minneap Minn). 2014;20:1241-60. 2. Osler W. The principles and practice of medicine. New York: Appleton; 1892. 3. Gray H. History of lumbar puncture (rachicentesis): The operation and the idea. Arch Neurol Psych. 1921;6:61-69. 4. Asbury AK. Guillain-Barre syndrome: historical aspects. Annals of neurology . 1990;27 Suppl:S2-6. 5. Afifi AK. The landry-guillain-barre strohl syndrome 1859 to 1992 a historical perspective. J Family Community Med. 1994;1:30-4. 6. Bril V and Katzberg HD. Acquired immune axonal neuropathies. Continuum (Minneap Minn). 2014;20:1261-73. 7. Iodice V and Sandroni P. Autonomic neuropathies. Continuum (Minneap Minn). 2014;20:1373-97. 8. Lehmann HC, Hartung HP, Kieseier BC and Hughes RA. Guillain-Barre syndrome after exposure to influenza virus. Lancet Infect Dis. 2010;10:643-51. 9. Sivadon-Tardy V, Orlikowski D, Porcher R, Sharshar T, Durand MC, Enouf V, Rozenberg F, Caudie C, Annane D, van der Werf S, Lebon P, Raphael JC, Gaillard JL and Gault E. Guillain-Barre syndrome and influenza virus infection. Clin Infect Dis. 2009;48:48-56. 10. Stowe J, Andrews N, Wise L and Miller E. Investigation of the temporal association of Guillain-Barre syndrome with influenza vaccine and influenzalike illness using the United Kingdom General Practice Research Database. American journal of epidemiology. 2009;169:382-8. 11. Tam CC, O'Brien SJ, Petersen I, Islam A, Hayward A and Rodrigues LC. Guillain-Barre syndrome and preceding infection with campylobacter, influenza and Epstein-Barr virus in the general practice research database. PloS one. 2007;2:e344. 12. Tam CC, O'Brien SJ and Rodrigues LC. Influenza, Campylobacter and Mycoplasma infections, and hospital admissions for Guillain-Barre syndrome, England. Emerg Infect Dis. 2006;12:1880-7. 13. Dawood FS, Chaves SS, Perez A, Reingold A, Meek J, Farley MM, Ryan P, Lynfield R, Morin C, Baumbach J, Bennett NM, Zansky S, Thomas A, Lindegren ML, Schaffner W, Finelli L and Emerging Infections Program N. Complications and associated bacterial coinfections among children hospitalized with seasonal or pandemic influenza, United States, 2003-2010. The Journal of infectious diseases. 2014;209:686-94. 14. McDermott M, Gelb DJ, Wilson K, Pawloski M, Burke JF, Shelgikar AV and London ZN. Sex Differences in Academic Rank and Publication Rate at Top-Ranked US Neurology Programs. JAMA Neurol. 2018;75:956-961. 15. Keddie S, Pakpoor J, Mousele C, Pipis M, Machado PM, Foster M, Record CJ, Keh RYS, Fehmi J, Paterson RW, Bharambe V, Clayton LM, Allen C, Price O, Wall J, Kiss-Csenki A, Rathnasabapathi DP, Geraldes R, Yermakova T, King-Robson J, Zosmer M, Rajakulendran S, Sumaria S, Farmer SF, Nortley R, Marshall CR, Newman EJ, Nirmalananthan N, Kumar G, Pinto AA, Holt J, Lavin TM, Brennan KM, Zandi MS, Jayaseelan DL, Pritchard J, Hadden RDM, Manji H, Willison HJ, Rinaldi S, Carr AS and Lunn MP. Epidemiological and cohort study finds no association between COVID-19 and Guillain-Barre syndrome. Brain. 2021;144:682-693. 16. Lunn MP, Cornblath DR, Jacobs BC, Querol L, van Doorn PA, Hughes RA and Willison HJ. COVID-19 vaccine and Guillain-Barre syndrome: let's not leap to associations. Brain. 2021;144:357-360.

#181 A primer on ICP management

The field of neurocritical care and traumatic brain injury management is rapidly evolving. We are shifting from older (but not entirely outdated) monitoring techniques to novel diagnostic and therapeutic advances in critical care medicine. Managing intracranial pressure crises involves the careful tiptoeing of a line between maintaining brain circulation and yet reducing intracranial fluid volume. And many of our interventions rely on one simple mathematical construct: CPP = MAP - ICP [Cerebral perfusion pressure = Mean arterial pressure – Intracranial pressure] The importance of this formula cannot be understated. So we are spending 35 minutes today reviewing it, and discussing pearls and pitfalls of ICP monitoring and management. But believe me, it’s worth it. Produced by James E. Siegler and Jon Rosenberg. Music courtesy of Unheard Music Concepts, Rafael Archangel, Milton Arias, and Quincas Moreira. The opening theme was composed by Jimothy Dalton. Sound effects by Mike Koenig and Daniel Simion. Unless otherwise mentioned in the podcast, no competing financial interests exist in the content of this episode. BrainWaves' podcasts and online content are intended for medical education only and should not be used for clinical decision making. Be sure to follow us on Twitter @brainwavesaudio for the latest updates to the podcast. REFERENCES 1. Rosner MJ and Coley IB. Cerebral perfusion pressure, intracranial pressure, and head elevation. Journal of neurosurgery. 1986;65:636-41. 2. Chesnut RM, Temkin N, Carney N, Dikmen S, Rondina C, Videtta W, Petroni G, Lujan S, Pridgeon J, Barber J, Machamer J, Chaddock K, Celix JM, Cherner M, Hendrix T and Global Neurotrauma Research G. A trial of intracranial-pressure monitoring in traumatic brain injury. The New England journal of medicine. 2012;367:2471-81. 3. Kristiansson H, Nissborg E, Bartek J, Jr., Andresen M, Reinstrup P and Romner B. Measuring elevated intracranial pressure through noninvasive methods: a review of the literature. J Neurosurg Anesthesiol. 2013;25:372-85. 4. Armstead WM. Cerebral Blood Flow Autoregulation and Dysautoregulation. Anesthesiol Clin. 2016;34:465-77. 5. Oddo M, Crippa IA, Mehta S, Menon D, Payen JF, Taccone FS and Citerio G. Optimizing sedation in patients with acute brain injury. Crit Care. 2016;20:128. 6. Carney N, Totten AM, O'Reilly C, Ullman JS, Hawryluk GW, Bell MJ, Bratton SL, Chesnut R, Harris OA, Kissoon N, Rubiano AM, Shutter L, Tasker RC, Vavilala MS, Wilberger J, Wright DW and Ghajar J. Guidelines for the Management of Severe Traumatic Brain Injury, Fourth Edition. Neurosurgery. 2017;80:6-15. 7. Okonkwo DO, Shutter LA, Moore C, Temkin NR, Puccio AM, Madden CJ, Andaluz N, Chesnut RM, Bullock MR, Grant GA, McGregor J, Weaver M, Jallo J, LeRoux PD, Moberg D, Barber J, Lazaridis C and Diaz-Arrastia RR. Brain Oxygen Optimization in Severe Traumatic Brain Injury Phase-II: A Phase II Randomized Trial. Critical care medicine. 2017;45:1907-1914. 8. Harary M, Dolmans RGF and Gormley WB. Intracranial Pressure Monitoring-Review and Avenues for Development. Sensors (Basel). 2018;18. 9. Koenig MA. Cerebral Edema and Elevated Intracranial Pressure. Continuum (Minneap Minn). 2018;24:1588-1602. 10. Jahns FP, Miroz JP, Messerer M, Daniel RT, Taccone FS, Eckert P and Oddo M. Quantitative pupillometry for the monitoring of intracranial hypertension in patients with severe traumatic brain injury. Crit Care. 2019;23:155. 11. Cook AM, Morgan Jones G, Hawryluk GWJ, Mailloux P, McLaughlin D, Papangelou A, Samuel S, Tokumaru S, Venkatasubramanian C, Zacko C, Zimmermann LL, Hirsch K and Shutter L. Guidelines for the Acute Treatment of Cerebral Edema in Neurocritical Care Patients. Neurocritical care. 2020;32:647-666. 12. Robba C, Pozzebon S, Moro B, Vincent JL, Creteur J and Taccone FS. Multimodal non-invasive assessment of intracranial hypertension: an observational study. Crit Care. 2020;24:379.

#180 The art of the pivot

What do hip weakness, headache, and neglect have in common? At minimum, they can all be approached with simple neurodiagnostic heuristics. But there's more to neurology and medicine than having an approach to "leg weakness" or an approach to "headache". You have to adapt to new information as it presents itself. You have to know when, and how, to pivot. Produced by James E. Siegler, Minal Patel, and Jesse Thon. Voiceovers by Taryn Hester and Terri Yeager. Music for our program today was courtesy of Lee Rosevere, Rafael Archangel, E’s Jammy Jams, Kai Engel, and Jon Watts under a Creative Commons license. Our theme song was composed by Jimothy Dalton. Sound effects by Mike Koenig and Daniel Simion. Unless otherwise mentioned in the podcast, no competing financial interests exist in the content of this episode. BrainWaves' podcasts and online content are intended for medical education only and should not be used for clinical decision making. Be sure to follow us on Twitter @brainwavesaudio for the latest updates to the podcast. REFERENCES 1. Rozen TD. Trigeminal neuralgia and glossopharyngeal neuralgia. Neurol Clin. 2004;22:185-206. 2. Tarulli AW and Raynor EM. Lumbosacral radiculopathy. Neurol Clin. 2007;25:387-405. 3. Cruccu G, Gronseth G, Alksne J, Argoff C, Brainin M, Burchiel K, Nurmikko T, Zakrzewska JM, American Academy of Neurology S and European Federation of Neurological S. AAN-EFNS guidelines on trigeminal neuralgia management. European journal of neurology : the official journal of the European Federation of Neurological Societies. 2008;15:1013-28. 4. Dyck PJ and Thaisetthawatkul P. Lumbosacral plexopathy. Continuum (Minneap Minn). 2014;20:1343-58. 5. Beume LA, Hieber M, Kaller CP, Nitschke K, Bardutzky J, Urbach H, Weiller C and Rijntjes M. Large Vessel Occlusion in Acute Stroke. Stroke; a journal of cerebral circulation. 2018;49:2323-2329. 6. Menon BK. Neuroimaging in Acute Stroke. Continuum (Minneap Minn). 2020;26:287-309.

#179 RBD and synucleinopathies

Who doesn’t enjoy their sleep? For most of us, it can be the most relaxing escape. And for others, a disturbance of sleep may be the first clue to a neurodenerative condition. Produced by James E. Siegler. Dr. Avidan reports that he receives royalties from Elsevier, is a consultant for Merck, and is a speaker for Eisai and Harmony. Music for our program today was by Andy Cohen, Purple Planet Music, Steve Combs, Yan Terrien, and Shane Ivers, whose music can be found at silvermansound.com. Our theme song was composed by Jimothy Dalton. Voiceover was courtesy of Taryn Hester. The opening theme was composed by Jimothy Dalton. Sound effects by Mike Koenig and Daniel Simion. Unless otherwise mentioned in the podcast, no competing financial interests exist in the content of this episode. BrainWaves' podcasts and online content are intended for medical education only and should not be used for clinical decision making. Be sure to follow us on Twitter @brainwavesaudio for the latest updates to the podcast. REFERENCES 1. Boeve BF, Silber MH, Ferman TJ, Lucas JA and Parisi JE. Association of REM sleep behavior disorder and neurodegenerative disease may reflect an underlying synucleinopathy. Mov Disord. 2001;16:622-30. 2. Gilat M, Coeytaux Jackson A, Marshall NS, Hammond D, Mullins AE, Hall JM, Fang BAM, Yee BJ, Wong KKH, Grunstein RR and Lewis SJG. Melatonin for rapid eye movement sleep behavior disorder in Parkinson's disease: A randomised controlled trial. Mov Disord. 2020;35:344-349. 3. Lloyd R, Tippmann-Peikert M, Slocumb N and Kotagal S. Characteristics of REM sleep behavior disorder in childhood. J Clin Sleep Med. 2012;8:127-31. 4. Malhotra R and Avidan AY. Neurodegenerative Disease and REM Behavior Disorder. Current treatment options in neurology. 2012;14:474-92. 5. McGrane IR, Leung JG, St Louis EK and Boeve BF. Melatonin therapy for REM sleep behavior disorder: a critical review of evidence. Sleep Med. 2015;16:19-26. 6. Porter VR and Avidan AY. Clinical Overview of REM Sleep Behavior Disorder. Semin Neurol. 2017;37:461-470. 7. Shin C, Park H, Lee WW, Kim HJ, Kim HJ and Jeon B. Clonazepam for probable REM sleep behavior disorder in Parkinson's disease: A randomized placebo-controlled trial. Journal of the neurological sciences. 2019;401:81-86. 8. St Louis EK, Boeve AR and Boeve BF. REM Sleep Behavior Disorder in Parkinson's Disease and Other Synucleinopathies. Mov Disord. 2017;32:645-658. 9. St Louis EK and Boeve BF. REM Sleep Behavior Disorder: Diagnosis, Clinical Implications, and Future Directions. Mayo Clinic proceedings. 2017;92:1723-1736. 10. Teigen LN, Sharp RR, Hirsch JR, Campbell E, Timm PC, Sandness DJ, Feemster JC, Gossard TR, Faber SM, Steele TA, Rivera S, Junna MR, Lipford MC, Tippmann-Peikert M, Kotagal S, Ju YE, Howell M, Schenck CH, Videnovic A, Jennum P, Hogl B, Stefani A, Arnulf I, Heidbreder A, Lewis S, McCarter SJ, Boeve BF, Silber MH and St Louis EK. Specialist approaches to prognostic counseling in isolated REM sleep behavior disorder. Sleep Med. 2021;79:107-112.

#178 First seizure of life

As many as 1% of the world has epilepsy, but far more than will have a seizure in their lifetime. Not everyone needs a seizure medication, some people are even harmed by them. So who warrants treatment, and what do you start with. Consider today’s program an intro to AED decision making. For educational purposes only, of course. Not to guide any healthcare provider’s decision making. Produced by James E. Siegler. Music courtesy of Lee Rosevere, Cellophane Sam, Jon Watts, Josh Woodward, and Rafael Archangel. The opening theme was composed by Jimothy Dalton. Sound effects by Mike Koenig and Daniel Simion. Unless otherwise mentioned in the podcast, no competing financial interests exist in the content of this episode. BrainWaves' podcasts and online content are intended for medical education only and should not be used for clinical decision making. Be sure to follow us on Twitter @brainwavesaudio for the latest updates to the podcast. REFERENCES 1. Hauser WA, Rich SS, Annegers JF and Anderson VE. Seizure recurrence after a 1st unprovoked seizure: an extended follow-up. Neurology. 1990;40:1163-70. 2. Randomized clinical trial on the efficacy of antiepileptic drugs in reducing the risk of relapse after a first unprovoked tonic-clonic seizure. First Seizure Trial Group (FIR.S.T. Group). Neurology. 1993;43:478-83. 3. Hui AC, Tang A, Wong KS, Mok V and Kay R. Recurrence after a first untreated seizure in the Hong Kong Chinese population. Epilepsia. 2001;42:94-7. 4. Koepp MJ and Woermann FG. Imaging structure and function in refractory focal epilepsy. The Lancet Neurology. 2005;4:42-53. 5. Marson A, Jacoby A, Johnson A, Kim L, Gamble C, Chadwick D and Medical Research Council MSG. Immediate versus deferred antiepileptic drug treatment for early epilepsy and single seizures: a randomised controlled trial. Lancet. 2005;365:2007-13. 6. Manjunath R, Davis KL, Candrilli SD and Ettinger AB. Association of antiepileptic drug nonadherence with risk of seizures in adults with epilepsy. Epilepsy Behav. 2009;14:372-8. 7. Fountain NB. Choosing among antiepileptic drugs. Continuum (Minneap Minn). 2010;16:121-35. 8. Fisher RS, Acevedo C, Arzimanoglou A, Bogacz A, Cross JH, Elger CE, Engel J, Jr., Forsgren L, French JA, Glynn M, Hesdorffer DC, Lee BI, Mathern GW, Moshe SL, Perucca E, Scheffer IE, Tomson T, Watanabe M and Wiebe S. ILAE official report: a practical clinical definition of epilepsy. Epilepsia. 2014;55:475-82. 9. Krumholz A, Wiebe S, Gronseth GS, Gloss DS, Sanchez AM, Kabir AA, Liferidge AT, Martello JP, Kanner AM, Shinnar S, Hopp JL and French JA. Evidence-based guideline: Management of an unprovoked first seizure in adults: Report of the Guideline Development Subcommittee of the American Academy of Neurology and the American Epilepsy Society. Neurology. 2015;84:1705-13. 10. Bouma HK, Labos C, Gore GC, Wolfson C and Keezer MR. The diagnostic accuracy of routine electroencephalography after a first unprovoked seizure. European journal of neurology : the official journal of the European Federation of Neurological Societies. 2016;23:455-63. 11. Leone MA, Giussani G, Nolan SJ, Marson AG and Beghi E. Immediate antiepileptic drug treatment, versus placebo, deferred, or no treatment for first unprovoked seizure. The Cochrane database of systematic reviews. 2016:CD007144.