Neurosurgery Commons^™

Imaging In Acute Neurovascular Emergencies: Optimizing Outcomes In Large Vessel Occlusion Stroke, Chandu Goli, Rohit Patel, Elliott Beard, Anna Liles, Saeed Saleh, Aleeza Namit, Alissa Ongaco, Kevin Steed Ph.D.

Annual Research Symposium

Purpose:

Large vessel occlusion (LVO) stroke is associated with high rates of morbidity and mortality, and patient outcomes are strongly influenced by rapid identification and timely reperfusion. Advances in acute neurovascular imaging have transformed stroke care by enabling precise patient selection, extending treatment windows, and accelerating clinical workflows. The purpose of this project is to evaluate how modern neurovascular imaging strategies influence treatment selection, workflow efficiency, and clinical outcomes in patients with acute LVO stroke.

Methods:

A narrative review of peer-reviewed literature published within the past decade was conducted. The review focused on CT-based imaging (non-contrast CT, CT angiography, CT …

Neurodevelopmental Outcomes After Posthemorrhagic Hydrocephalus Of Prematurity, Mekal S. Mathew, Rene Leal, Caroline L. Hanan, David J. Sun, Hasan K. Mubarak, Amelie D. Perrier, William E. Johnson, Micolette R. Mardik, Trevor R. Alwell, Christian Amezquita Contreras, Chance E. Hatfield, Peter H. Yang

Summer Research Program Abstracts

No abstract provided.

Repeat Selective Dorsal Rhizotomy For Residual Spasticity: Illustrative Case, Elizabeth Ledbetter, Aloysia L Schwabe, Heather Sgro, Sarah Slocum, Nisha Gadgil

Faculty, Staff and Students Publications

Background: Selective dorsal rhizotomy (SDR) is typically a one-time surgical procedure supported by intense rehabilitation to improve ambulatory capability in children with spastic cerebral palsy (CP).

Observations: The authors present the unique case of a teenager with spastic diplegic CP who had undergone L2-S1 SDR as a child and presented with residual focal spasticity in the right plantar flexors. He underwent revision SDR at the right L5 and S1 levels in addition to decompression of canal stenosis. Postoperatively, he had notable improvement in his gait with relief of preoperative right knee and foot pain, improved ease of ambulation, and improved …

Glutamatergic Regulation Of Mirna-Containing Intraluminal Vesicle Trafficking And Extracellular Vesicle Secretion From Cortical Neurons, Marcela Bertolio, Qiyi Li, Francesca E Mowry, Kathryn E Reynolds, Rashed Alananzeh, Haichao Wei, Kyoeun Keum, Rachel Jarvis, Jiaqian Wu, Yongjie Yang

Faculty, Staff and Student Publications

Neuronal extracellular vesicles (microvesicles and exosomes) are emerging secreted vesicular signals that play important roles in the CNS. Currently, little is known about how glutamatergic signalling affects the subcellular localisation of exosome precursor intraluminal vesicles (ILVs), microRNA (miR) packaging into ILVs and in vivo spreading of neuronal EVs. By selectively labelling ILVs and exosomes (but not plasma membrane-derived MVs) with GFP-tagged human CD63 (hCD63-GFP) in cortical neurons, we found that glutamate stimulation significantly redistributes subcellular localisation of hCD63-GFP+ ILVs, especially decreasing its co-localisation with multi-vesicular body (MVB) marker Rab7 while substantially promoting EV secretion. Interestingly, glutamate stimulation only modestly alters …

Development And Validation Of A Clinical Risk Model For Postoperative Outcome In Newly Diagnosed Glioblastoma: A Report Of The Rano Resect Group, Philipp Karschnia, Jacob S Young, Gilbert C Youssef, Antonio Dono, Levin Häni, Tommaso Sciortino, Francesco Bruno, Stephanie T Juenger, Nico Teske, Jorg Dietrich, Michael Weller, Michael A Vogelbaum, Martin Van Den Bent, Juergen Beck, Niklas Thon, Jasper K W Gerritsen, Shawn Hervey-Jumper, Daniel P Cahill, Susan M Chang, Roberta Rudà, Lorenzo Bello, Oliver Schnell, Yoshua Esquenazi, Maximilian I Ruge, Stefan J Grau, Raymond Y Huang, Patrick Y Wen, Mitchel S Berger, Annette M Molinaro, Joerg-Christian Tonn

Faculty, Staff and Student Publications

Background: Following surgery, patients with newly diagnosed glioblastoma frequently enter clinical trials. Nuanced risk assessment is warranted to reduce imbalances between study arms. Here, we aimed (I) to analyze the interactive effects of residual tumor with clinical and molecular factors on outcome and (II) to define a postoperative risk assessment tool.

Methods: The response assessment in neuro-oncology (RANO) resect group retrospectively compiled an international, seven-center training cohort of patients with newly diagnosed glioblastoma. The combined associations of residual tumor with molecular or clinical factors and survival were analyzed, and recursive partitioning analysis was performed for risk modeling. The resulting model …

Spetzler-Martin Grade Iv Cerebral Arteriovenous Malformations In Adult Patients: A Propensity-Score Matched Analysis Of Resection And Stereotactic Radiosurgery, Salem M Tos, Mahmoud Osama, Georgios Mantziaris, Bardia Hajikarimloo, Nimer Adeeb, Sandeep Kandregula, Hamza Adel Salim, Basel Musmar, Christopher S Ogilvy, Douglas Kondziolka, Adam A Dmytriw, Kareem El Naamani, Ahmed Abdelsalam, Deepak Kumbhare, Sanjeev Gummadi, Cagdas Ataoglu, Muhammed Amir Essibayi, Ufuk Erginoglu, Abdullah Keles, Sandeep Muram, Daniel Sconzo, Howard Riina, Arwin Rezai, Johannes Pöppe, Rajeev D Sen, Louis J Kim, Omar Alwakaa, Christoph J Griessenauer, Pascal Jabbour, Stavropoula I Tjoumakaris, Jan-Karl Burkhardt, Robert M Starke, Mustafa K Baskaya, Laligam N Sekhar, Michael R Levitt, David J Altschul, Neil Haranhalli, Malia Mcavoy, Abdallah Abushehab, Assala Aslan, Christian Swaid, Adib Abla, Christopher Stapleton, Matthew Koch, Visish M Srinivasan, Peng R Chen, Spiros Blackburn, Omar Choudhri, Bryan Pukenas, Darren Orbach, Edward Smith, Markus Möhlenbruch, Ali Alaraj, Ali Aziz-Sultan, Aman B Patel, Amey Savardekar, Hugo H Cuellar, Kathleen Dlouhy, Tarek El Ahmadieh, Michael Lawton, Adnan Siddiqui, Jacques Morcos, Bharat Guthikonda, Jason Sheehan

Faculty, Staff and Student Publications

Spetzler-Martin Grade IV arteriovenous malformations (AVMs) are challenging due to high risks associated with both treatment and natural progression. This study compares the outcomes of microsurgical resection and stereotactic radiosurgery (SRS) in high-grade AVMs, analyzing obliteration rates, complications, and functional outcomes. A retrospective cohort of 96 patients treated with either microsurgical resection (33 patients) or SRS (63 patients) was analyzed. Propensity-score matching was employed to account for baseline variables such as AVM size (cm), preoperative embolization and rupture status. Primary endpoints included AVM obliteration, complication rates, and modified Rankin Scale (mRS) scores. After matching, 31 patients per group were analyzed. …

Accuracy Of Task-Based Electrocorticography Brain Mapping And Relationships With Postoperative Cognitive-Linguistic Changes Following Eloquent Glioma Resection, Kyle R. Noll, Israt Tasnim, Priscella Asman, Katherine Connelly, Chandra Swamy, Matthew Muir, Mathew Hall, Jeffrey Wefel, Sahil Bajaj, Giuseppe Pellizzer, Nuri F. Ince, Suji S. Prabhu

Cancer Survivorship Research Retreat

The University of Texas MD Anderson Cancer Center 2025 Cancer Survivorship Research Retreat

Memorability Of Novel Words Correlates With Anterior Fusiform Activity During Reading, Oscar Woolnough, Nitin Tandon

Faculty, Staff and Student Publications

Our memory for the words we already know is best predicted by their associated meanings. However, the factors that influence whether we will remember a new word after we see it for the first time are unclear. We record memory performance for 2100 novel pseudowords across 1804 participants during a continuous recognition task. Participants show significant agreement across individuals for which novel words were memorable or forgettable, suggesting an intrinsic memorability for individual pseudowords. Pseudowords that are similar to low-frequency known words, with sparse orthographic neighbourhoods and rarely occurring letter pairs, are more memorable. Further, using intracranial recordings in 36 …

Outcomes Of Arteriovenous Malformation Patients With Multiple Versus Single Feeders: A Multicenter Retrospective Study With Propensity-Score Matching, Basel Musmar, Nimer Adeeb, Hammam Abdalrazeq, Joanna M Roy, Stavropoula I Tjoumakaris, Hamza Adel Salim, Douglas Kondziolka, Jason Sheehan, Christopher S Ogilvy, Howard Riina, Sandeep Kandregula, Adam A Dmytriw, Kareem El Naamani, Ahmed Abdelsalam, Natasha Ironside, Deepak Kumbhare, Cagdas Ataoglu, Muhammed Amir Essibayi, Abdullah Keles, Sandeep Muram, Daniel Sconzo, Arwin Rezai, Omar Alwakaa, Salem M Tos, Ufuk Erginoglu, Johannes Pöppe, Rajeev D Sen, Christoph J Griessenauer, Jan-Karl Burkhardt, Robert M Starke, Mustafa K Baskaya, Laligam N Sekhar, Michael R Levitt, David J Altschul, Malia Mcavoy, Assala Aslan, Abdallah Abushehab, Christian Swaid, Adib A Abla, Saman Sizdahkhani, Sravanthi Koduri, Elias Atallah, Spyridon Karadimas, M Reid Gooch, Robert H Rosenwasser, Christopher Stapleton, Matthew Koch, Visish M Srinivasan, Peng R Chen, Spiros Blackburn, Joseph Cochran, Omar Choudhri, Bryan Pukenas, Darren Orbach, Edward Smith, Pascal J Mosimann, Ali Alaraj, Mohammad A Aziz-Sultan, Aman B Patel, Hugo H Cuellar, Michael Lawton, Bharat Guthikonda, Jacques Morcos, Pascal Jabbour

Faculty, Staff and Student Publications

Introduction: The impact of multiple feeding arteries on clinical outcomes of cerebral arteriovenous malformations (AVMs) is not well understood. This study aims to compare outcomes between AVMs with multiple versus single feeding arteries.

Patients and methods: Data from the Multicenter International Study for Treatment of Brain AVMs (MISTA) consortium were analyzed. Propensity score matching (PSM) was used to balance cohorts. Subgroup analysis was conducted for ruptured and unruptured AVMs and different treatment options, and multivariable logistic regression was applied to assess the impact of feeding artery origin.

Results: Among 953 patients, 661(69.4%) had multiple feeding arteries, and 292 (30.6%) had …

All Three Supersystems-Nervous, Vascular, And Immune-Contribute To The Cortical Infarcts After Subarachnoid Hemorrhage, Jens P Dreier, Alexander Joerk, Hiroki Uchikawa, Viktor Horst, Coline L Lemale, Helena Radbruch, Devin W Mcbride, Peter Vajkoczy, Ulf C Schneider, Ran Xu

Faculty, Staff and Student Publications

The recently published DISCHARGE-1 trial supports the observations of earlier autopsy and neuroimaging studies that almost 70% of all focal brain damage after aneurysmal subarachnoid hemorrhage are anemic infarcts of the cortex, often also affecting the white matter immediately below. The infarcts are not limited by the usual vascular territories. About two-fifths of the ischemic damage occurs within ~ 48 h; the remaining three-fifths are delayed (within ~ 3 weeks). Using neuromonitoring technology in combination with longitudinal neuroimaging, the entire sequence of both early and delayed cortical infarct development after subarachnoid hemorrhage has recently been recorded in patients. Characteristically, cortical …

Supplementary Motor Area In Speech Initiation: A Large-Scale Intracranial Eeg Evaluation Of Stereotyped Word Articulation, Latané Bullock, Kiefer J Forseth, Oscar Woolnough, Patrick S Rollo, Nitin Tandon

Faculty, Staff and Student Publications

Speech production engages a distributed network of cortical and subcortical brain regions. The supplementary motor area (SMA) has long been thought to be a key hub in coordinating across these regions to initiate voluntary movements, including speech. We analyzed direct intracranial recordings from 115 patients with epilepsy as they articulated a single word in a subset of trials from a picture-naming task. We aimed to characterize the temporal dynamics of SMA relative to other cortical regions. SMA and preSMA were among the first regions to activate after cue onset, peaked in activity before articulation onset, and were the earliest regions …

Minimally Invasive Non-Expansile Tubular Extradural Posterior Fossa Decompression (Minted Technique) For The Management Of Chiari I.5 Malformation: Historical Overview Of Surgical Techniques, Technical Note, Proof Of Concept, Illustrative Case And Case Series. Lesser Is Better, José Alberto Israel Romero Rangel, Manuel Eduardo Soto García, Sergio Soriano Solís, Carlos Raúl Rangel Morales, Gerson Reyes Rodríguez, José Antonio Soriano Sánchez

Archives of Neurosurgery

BACKGROUND: Chiari's Malformation surgical treatment has significantly changed since the "classical" technique description by Gardner (1950). It is probably the most commonly performed approach, even when multiple techniques are available because no substantial changes nor any clear surgical objectives have been made. OBJECTIVE: To demonstrate a new cutting-edge surgical technique mastering the advantage of each surgical procedure ever described in the history of Chiari's Malformation establishing three critical points in surgical technique: clear patient-specific surgical goals, dynamic posterior fossa reconstruction, and extradural occipitoatlantal dense-adhesions release. METHODS: A comprehensive review of historically described approaches, proof of concept of surgical technique in …

High-Grade Avm. Educational Vignette And Clinical Cases, Marcos Devanir Silva Da Costa, Marcelo Augusto Acosta Goiri, Daniela Coelho, Juan Alberto Paz Archila, Talita Helena Martins Sarti, Feres Chaddad-Neto

Archives of Neurosurgery

The arteriovenous malformation (AVM) is a vascular malformation characterized by fistulas between arteries and veins forming a nidus, without interposition of capillary vessels and of which early draining vein is identified at the digital angiography. Potential reports of its existence date from the second century AD. Spetzler and Martin (S-M) proposed a classification considering three features and Lawton then added new predictors. A maximum of 10 score can be achieved by applying the modified S-M grade system. This classification guides decision-making and the possible choice of the multimodal treatment (surgery, radiosurgery and embolization). We discuss historical, pathological, clinical and therapeutic …

Optimizing Decision-Making In A Cerebral Palsy Model Using Reinforcement Learning, Richard Ampah

Pitzer Senior Theses

This study presents an original interdisciplinary investigation into how reinforcement learning (RL) can model motor and cognitive defects and potentially improve motor and cognitive functions in individuals with cerebral palsy (CP), a non-progressive neurological disorder that impairs movement and adaptability. Integrating computational neuroscience and machine learning, the research applies policy gradient methods and Markov Decision Processes (MDPs) to simulate adaptive learning in agents with and without CP-related constraints.

The central aim is to compare the cumulative rewards of optimal policies, derived from value iteration, and human-like learning policies using the REINFORCE algorithm, both with and without the Bellman baseline. The …

Leveraging Clinical Standards To Improve The Translational Relevance Of Therapies For Experimental Spinal Cord Injury, Aaron L. Silverstein

Theses and Dissertations--Neuroscience

Efforts to improve treatment of spinal cord injury (SCI) often use animals to develop effective therapeutics, intending to improve the survival and the quality of life of persons with SCI. Over half of all SCIs in the United States occur at the cervical level and often cause locomotor deficits and life-threatening breathing dysfunction. Thus, my dissertation is focused on this important patient population.

After beginning with a description of translational research and surveying SCI from a clinical standpoint, I turned to describe experimental models of cervical SCI and more detailed neuroimmunological findings relevant to my work. Then, I conducted a …

Implications And Pathophysiology Of Neuroinflammation In Pediatric Patients With Traumatic Brain Injury: An Updated Review, Shalin S Shah, Arya J Shetty, David T Johnston, Caroline L Hanan, Brendan T O'Reilly, Max A Skibber, Ahmed T Massoud, Banghe Zhu, Eva M Sevick-Muraca, Jenifer Juranek, Charles S Cox, Manish N Shah

Faculty, Staff and Student Publications

Traumatic Brain Injury (TBI) in children is a profound public health issue with the potential to disrupt cognitive, behavioral, and psychosocial development significantly. This review provides an updated examination of the role of neuroinflammation in pediatric TBI, emphasizing its dual impact on injury progression and recovery. Highlighted is the complex interplay of primary and secondary injury mechanisms, including the critical contributions of neuroinflammatory responses mediated by central and peripheral immune cells. Advances in biomarker identification and imaging techniques are discussed, showcasing how tools like diffusion tensor imaging (DTI) and positron emission tomography (PET) enhance our understanding of neuroinflammatory processes. The …

Re-Stenting Following Recurrence After Successful Venous Sinus Stenosis Stenting For Idiopathic Intracranial Hypertension, Salvatore A D'Amato, Juan Carlos Martinez Gutierrez, Hussein A Zeineddine, Eric Claude Mohan, Tien Nguyen, Cybele Woon, Rosa Tang, Peng Roc Chen

Faculty, Staff and Student Publications

Objective: In medically refractory idiopathic intracranial hypertension (IIH), venous sinus stenosis (VSS) stenting has been an effective treatment modality. Among patients who experience recurrent symptoms and develop new stenosis, the optimal treatment strategy is unknown. The aim of this study was to investigate the role of rescue re-stenting in patients with recurrence after prior successful stenting.

Methods: This was a single center, retrospective review from a prospectively maintained IIH registry. Between 2012 and 2023, patients who underwent interventions for confirmed IIH and angiographically demonstrable VSS were included. The cohort was divided into those who underwent a single stenting procedure (single …

Neuroprotective Effect Of L-Dopa-Induced Interleukin-13 On Striatonigral Degeneration In Cerebral Ischemia, Eunhae Jeon, Myeong-Seong Seo, Enkhmaa Lkhagva-Yondon, Yu-Ree Lim, Seung-Woo Kim, Yu Jeong Kang, Jun Seok Lee, Byoung Dae Lee, Rayul Wi, So-Yoon Won, Young Cheul Chung, Eun S Park, Eunhee Kim, Byung Kwan Jin, Myung-Shin Jeon

Faculty, Staff and Student Publications

Levodopa (L-DOPA) treatment is a clinically effective strategy for improving motor function in patients with ischemic stroke. However, the mechanisms by which modulating the dopamine system relieves the pathology of the ischemic brain remain unclear. Emerging evidence from an experimental mouse model of ischemic stroke, established by middle cerebral artery occlusion (MCAO), suggested that L-DOPA has the potential to modulate the inflammatory and immune response that occurs during a stroke. Here, we aimed to demonstrate the therapeutic effect of L-DOPA in regulating the systemic immune response and improving functional deficits in mice with ischemia. Transient MCAO led to progressive degeneration …

Use Of Electrical Bone Growth Stimulators In High-Risk Patients Following Spinal Fusion, Soumya Malhotra, Khavir Sharieff

HCA-NSU MD Research Day

Title: Use of Electrical Bone Growth Stimulators in High-Risk Patients Following Spinal Fusion Authors: Soumya Malhotra, BA., MS1 & Khavir Sharieff, DO, MBA2 1Class of 2027, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Fort Lauderdale, FL 2Assistant Professor of Surgery, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Tampa Bay, FLNova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine Objective: This study aimed to elucidate the advantages of EBGSs following high-risk spinal fusions. Background: Pseudarthrosis is a condition where bones fail to fuse after an injury or surgery. It causes significant …

Pathophysiology In Brain Arteriovenous Malformations: Focus On Endothelial Dysfunctions And Endothelial-To-Mesenchymal Transition, Jae Yeong Jeong, Adrian E Bafor, Bridger H Freeman, Peng R Chen, Eun S Park, Eunhee Kim

Faculty, Staff and Student Publications

Brain arteriovenous malformations (bAVMs) substantially increase the risk for intracerebral hemorrhage (ICH), which is associated with significant morbidity and mortality. However, the treatment options for bAVMs are severely limited, primarily relying on invasive methods that carry their own risks for intraoperative hemorrhage or even death. Currently, there are no pharmaceutical agents shown to treat this condition, primarily due to a poor understanding of bAVM pathophysiology. For the last decade, bAVM research has made significant advances, including the identification of novel genetic mutations and relevant signaling in bAVM development. However, bAVM pathophysiology is still largely unclear. Further investigation is required to …

Dissociation Of Reading And Naming In Ventral Occipitotemporal Cortex, Oscar Woolnough, Nitin Tandon

Faculty, Staff and Student Publications

Lesions in the language-dominant ventral occipitotemporal cortex (vOTC) can result in selective impairment of either reading or naming, resulting in alexia or anomia. Yet, functional imaging studies that show differential activation for naming and reading do not reveal activity exclusively tuned to one of these inputs. To resolve this dissonance in the functional architecture of the vOTC, we used focused stimulation to the vOTC in 49 adult patients during reading and naming, and generated a population-level, probabilistic map to evaluate if reading and naming are clearly dissociable within individuals. Language mapping (50 Hz, 2829 stimulations) was performed during passage reading …

Impact Of Rehab Among Stroke Patients Affecting Anxiety And Depression; Faith 4 Neurosurgical Icu, Stephanie Pigg, Stephan R Smith

Covenant Nurses Week 2024

No abstract provided.

Do Hourly Neuro Exams Lead To Sleep Deprivation And Icu Delirium: A Research Review, Toni Gafford

Covenant Nurses Week 2024

No abstract provided.

The Role Of Occipital Condyle And Atlas Anomalies On Occipital Cervical Fusion Outcomes In Chiari Malformation Type I With Syringomyelia: A Study From The Park-Reeves Syringomyelia Research Consortium, Alexander T Yahanda, Joyce Koueik, Laurie L Ackerman, P David Adelson, Gregory W Albert, Philipp R Aldana, Tord D Alden, Richard C E Anderson, David F Bauer, Tammy Bethel-Anderson, Karin Bierbrauer, Douglas L Brockmeyer, Joshua J Chern, Daniel E Couture, David J Daniels, Brian J Dlouhy, Susan R Durham, Richard G Ellenbogen, Ramin Eskandari, Herbert E Fuchs, Gerald A Grant, Patrick C Graupman, Stephanie Greene, Jeffrey P Greenfield, Naina L Gross, Daniel J Guillaume, Todd C Hankinson, Gregory G Heuer, Mark Iantosca, Bermans J Iskandar, Eric M Jackson, George I Jallo, James M Johnston, Bruce A Kaufman, Robert F Keating, Nickalus R Khan, Mark D Krieger, Jeffrey R Leonard, Cormac O Maher, Francesco T Mangano, Jonathan Martin, J Gordon Mccomb, Sean D Mcevoy, Thanda Meehan, Arnold H Menezes, Michael S Muhlbauer, Brent R O'Neill, Greg Olavarria, John Ragheb, Nathan R Selden, Manish N Shah, Chevis N Shannon, Joshua S Shimony, Matthew D Smyth, Scellig S D Stone, Jennifer M Strahle, Mandeep S Tamber, James C Torner, Gerald F Tuite, Elizabeth C Tyler-Kabara, Scott D Wait, John C Wellons, William E Whitehead, Tae Sung Park, David D Limbrick, Raheel Ahmed

Faculty, Staff and Student Publications

Objective: Congenital anomalies of the atlanto-occipital articulation may be present in patients with Chiari malformation type I (CM-I). However, it is unclear how these anomalies affect the biomechanical stability of the craniovertebral junction (CVJ) and whether they are associated with an increased incidence of occipitocervical fusion (OCF) following posterior fossa decompression (PFD). The objective of this study was to determine the prevalence of condylar hypoplasia and atlas anomalies in children with CM-I and syringomyelia. The authors also investigated the predictive contribution of these anomalies to the occurrence of OCF following PFD (PFD+OCF).

Methods: The authors analyzed the prevalence of condylar …

Incidence And Factors In Delayed Neurological Deficits After Subarachnoid Hemorrhage In Mice, William Wroe, Ari Dienel, Sungha Hong, Kanako Matsumura, Jose Guzman, Kiara Torres, Angelica Bernal, Hussein A Zeineddine, Peeyush Thankamani Pandit, Spiros L Blackburn, Devin W Mcbride

Faculty, Staff and Student Publications

Background: Delayed cerebral ischemia (DCI) is one of the most feared complications in aneurysmal subarachnoid hemorrhage (SAH). Animal models are crucial to studying the disease mechanisms and potential treatments. DCI in rodents was thought to not exist; herein we examine literature and our experience with DCI in rodents.

Methods: Daily behavioral performance was assessed every day from day 1 to up to 7 days post-SAH on mice from 5 different studies that used the endovascular perforation model. Performance was graded using an 8-test sensorimotor neuroscore previously described. The daily neuroscore was then used to identify the incidence and timing of …

Corticospinal Inhibition Investigated In Relation To Upper Extremity Motor Function In Cervical Spinal Cord Injury, Tarun Arora, Jia Liu, Akhil Mohan, Xin Li, Kyle O'Laughlin, Teale Bennett, Gregory Nemunaitis, Francois Bethoux, Svetlana Pundik, Kelsey Baker

School of Medicine Publications

Objective: Corticospinal inhibitory mechanisms are relevant to functional recovery but remain poorly understood after spinal cord injury (SCI). Post-injury characteristics of contralateral silent period (CSP), a measure of corticospinal inhibition evaluated using transcranial magnetic stimulation (TMS), is inconsistent in literature. We envisioned that investigating CSP across muscles with varying degrees of weakness may be a reasonable approach to resolve inconsistencies and elucidate the relevance of corticospinal inhibition for upper extremity function following SCI.

Methods: We studied 27 adults with chronic C1-C8 SCI (age 48.8 ± 16.1 years, 3 females) and 16 able-bodied participants (age 33.2 ± 11.8 years, 9 females). …

Safety And Efficacy Of L5-S1 Inclusion In Multi-Level Oblique Lumbar Interbody Fusions, Danyal Quraishi, Shahed Elhamdani, Chen Xu, Alexander Yu

Tower Health Research Day

No abstract provided.

It's About Time! Timing In Epilepsy Evaluation And Treatment, Heather Ravvin Mckee, Jorge Vidaurre, Dave Clarke, Janelle Wagner, Jeffrey W Britton, Linda Laux, Eugen Trinka, Clio Rubinos, Tanya J W Mcdonald, Fred A Lado, Martina Bebin, Christos Papadelis, Aaron F Struck, Carolina B Maciel, Ana L Velasco, Arjun Chandran, Sandipan Pati, Nitin Tandon, Guadalupe Fernandez-Baca Vaca, Madison M Berl, Ahsan N Moosa

Faculty, Staff and Student Publications

The 2023 American Epilepsy Society Annual Course "It's About Time" addressed timing in epilepsy evaluation and treatment with respect to health disparity and vulnerable populations and diagnostic, clinical, and epilepsy surgery evaluation. This comprehensive course included topics on gaps in epilepsy care and optimization of behavioral health for patients with epilepsy. The summary details current knowledge in areas of seizure forecasting and epileptogenesis. Intricacies and controversies over timing were discussed for treatment of nonconvulsive seizures and ictal-interictal patterns, acute symptomatic seizures, neuromodulation versus surgery, and epilepsy surgery in status epilepticus. Timing regarding clinical care in autoimmune-associated epilepsy, developmental and epileptic …

Endovascular Thrombectomy For Large Ischemic Stroke Across Ischemic Injury And Penumbra Profiles, Amrou Sarraj, Ameer E Hassan, Michael G Abraham, Santiago Ortega-Gutierrez, Scott E Kasner, Muhammad Shazam Hussain, Michael Chen, Leonid Churilov, Hannah Johns, Clark W Sitton, Vignan Yogendrakumar, Felix C Ng, Deep K Pujara, Spiros Blackburn, Sophia Sundararajan, Yin C Hu, Nabeel A Herial, Juan F Arenillas, Jenny P Tsai, Ronald F Budzik, William J Hicks, Osman Kozak, Bernard Yan, Dennis J Cordato, Nathan W Manning, Mark W Parsons, Andrew Cheung, Ricardo A Hanel, Amin N Aghaebrahim, Teddy Y Wu, Pere Cardona Portela, Chirag D Gandhi, Fawaz Al-Mufti, Natalia Pérez De La Ossa, Joanna D Schaafsma, Jordi Blasco, Navdeep Sangha, Steven Warach, Timothy J Kleinig, Faris Shaker, Faisal Al Shaibi, Gabor Toth, Mohammad A Abdulrazzak, Gagan Sharma, Abhishek Ray, Jeffrey Sunshine, Amanda Opaskar, Kelsey R Duncan, Wei Xiong, Edgar A Samaniego, Laith Maali, Colleen G Lechtenberg, Arturo Renú, Nirav Vora, Thanh Nguyen, Johanna T Fifi, Stavropoula I Tjoumakaris, Pascal Jabbour, Georgios Tsivgoulis, Vitor Mendes Pereira, Maarten G Lansberg, Michael Degeorgia, Cathy A Sila, Nicholas Bambakidis, Michael D Hill, Stephen M Davis, Lawrence Wechsler, James C Grotta, Marc Ribo, Greg W Albers, Bruce C Campbell

Faculty, Staff and Student Publications

Importance: Whether endovascular thrombectomy (EVT) efficacy for patients with acute ischemic stroke and large cores varies depending on the extent of ischemic injury is uncertain.

Objective: To describe the relationship between imaging estimates of irreversibly injured brain (core) and at-risk regions (mismatch) and clinical outcomes and EVT treatment effect.

Design, setting, and participants: An exploratory analysis of the SELECT2 trial, which randomized 352 adults (18-85 years) with acute ischemic stroke due to occlusion of the internal carotid or middle cerebral artery (M1 segment) and large ischemic core to EVT vs medical management (MM), across 31 global centers between October 2019 …

Experience With A Hybrid Recruitment Approach Of Patient-Facing Web Portal Screening And Subsequent Phone And Medical Record Review For A Neurosurgical Intervention Trial For Chronic Ischemic Stroke Disability (Pisces Iii), Brad J Kolls, Keith W Muir, Sean I Savitz, Lawrence R Wechsler, Julie G Pilitsis, Scott Rahimi, Richard L Beckman, Vincent Holmes, Peng R Chen, David S Albers, Daniel T Laskowitz

Faculty, Staff and Student Publications

BACKGROUND: Recruitment of participants is the greatest risk to completion of most clinical trials, with 20-40% of trials failing to reach the targeted enrollment. This is particularly true of trials of central nervous system (CNS) therapies such as intervention for chronic stroke. The PISCES III trial was an invasive trial of stereotactically guided intracerebral injection of CTX0E03, a fetal derived neural stem cell line, in patients with chronic disability due to ischemic stroke. We report on the experience using a novel hybrid recruitment approach of a patient-facing portal to self-identify and perform an initial screen for general trial eligibility (tier …