Neurology Commons^™

Statistical Analysis Of Fnirs Data: Consideration Of Spatial Varying Coefficient Model Of Prefrontal Cortex Activity Changes During Speech Motor Learning In Apraxia Of Speech, Rachel Johnson, Jennifer Matthews, Norou Diawara, Rachel Carroll

Communication Disorders & Special Education Faculty Publications

Apraxia of speech is an impairment in the planning and programming of speech typically accompanied by aphasia (language impairment) secondary to a left hemisphere stroke. It is unknown if the structural and functional connections to the damaged area implicate the integrity of the cognitive functions of the prefrontal cortex (PFC). The present study examines the feasibility of measuring hemodynamic activity in the PFC in response to the structure of practice and during treatment. This multiple-baseline single case-design study involving two individuals with chronic acquired apraxia of speech measured the hemodynamic changes in PFC activity during treatment across the intervention period …

Comparing Open And Fetoscopic Fetal Surgical Repairs Of Myelomeningocele, Kyra Isaacs

Capstone Showcase

Introduction: There have been great advances in the treatment of myelomeningocele (MMC) spina bifida in the past 20 years. An open surgical repair in-utero has been shown to reduce mortality and morbidity, specifically decreasing the rate of shunt placement and hindbrain herniation compared to a postnatal surgical approach. However, this surgery introduced risks to the mother that were never a consideration in previous surgical approaches.

Methods: This paper compares research on new minimally invasive fetoscopic surgical techniques to open fetal surgery in the prenatal repair of MMC. Searches in PubMed and Clinical Key were conducted to produce papers published on …

Efficacy Of Cpap Compared To Standard Pharmacotherapy In Reducing Cognitive Impairment Symptoms In Patients With Alzheimer's Disease, Nicholas Moylan

Capstone Showcase

This review analyzed the following question: In adults age 65 years old or older diagnosed with Alzheimer’s Disease (P), is nightly use of CPAP (I) more effective in reducing cognitive impairment symptoms (O) than standard pharmacotherapy options (C)? A literature search conducted through Google Scholar and PubMed granted six relevant articles that provided data for this review. No current studies compared CPAP treatment with pharmacotherapy, and each study used unique measures of cognitive function, making direct comparison of the two therapies difficult. Results demonstrated that first line pharmacotherapy can improve cognitive function, but only in limited way and only in …

Modulation Of Epileptogenesis: A Paradigm For The Integration Of Enzyme-Based Microelectrode Arrays And Optogenetics, Corwin R. Butler, Jeffery A. Boychuk, Francois Pomerleau, Ramona Alcala, Peter Huettl, Yi Ai, Johan Jakobsson, Sidney W. Whiteheart, Greg A. Gerhardt, Bret N. Smith, John T. Slevin

Physiology Faculty Publications

BACKGROUND: Genesis of acquired epilepsy includes transformations spanning genetic-to- network-level modifications, disrupting the regional excitatory/inhibitory balance. Methodology concurrently tracking changes at multiple levels is lacking. Here, viral vectors are used to differentially express two opsin proteins in neuronal populations within dentate gyrus (DG) of hippocampus. When activated, these opsins induced excitatory or inhibitory neural output that differentially affected neural networks and epileptogenesis. In vivo measures included behavioral observation coupled to real-time measures of regional glutamate flux using ceramic-based amperometric microelectrode arrays (MEAs).

RESULTS: Using MEA technology, phasic increases of extracellular glutamate were recorded immediately upon application of blue light/488 nm …

Can Human Neurological Tests Of Consciousness Be Applied To Octopus?, Benedetta Cecconi, Jitka Annen, Steven Laureys

Animal Sentience

If the anatomy, physiology and behaviour of a species differ substantially from our own, can we infer that the species is unconscious? In the daily clinical care of patients with disorders of consciousness we face many similar challenges: our current approach with these patients - a combination of behavioural and brain imaging-based assessments - might also be a viable route to investigating octopus consciousness.

Comparison Of Outcomes In Level I Vs Level Ii Trauma Centers In Patients Undergoing Craniotomy Or Craniectomy For Severe Traumatic Brain Injury., Nohra Chalouhi, Nikolaos Mouchtouris, Fadi Al Saiegh, Robert M Starke, Thana Theofanis, Somnath Das, Jack Jallo

Department of Neurosurgery Faculty Papers

BACKGROUND: Traumatic brain injury (TBI) carries a devastatingly high rate of morbidity and mortality.

OBJECTIVE: To assess whether patients undergoing craniotomy/craniectomy for severe TBI fare better at level I than level II trauma centers in a mature trauma system.

METHODS: The data were extracted from the Pennsylvania Trauma Outcome Study database. Inclusion criteria were patients > 18 yr with severe TBI (Glasgow Coma Scale [GCS] score less than 9) undergoing craniotomy or craniectomy in the state of Pennsylvania from January 1, 2002 through September 30, 2017.

RESULTS: Of 3980 patients, 2568 (64.5%) were treated at level I trauma centers and 1412 …

A Brief History Of Quality Improvement In Health Care And Spinal Surgery., Kevin Hines, Nikolaos Mouchtouris, John J Knightly, James Harrop

Department of Neurosurgery Faculty Papers

While medical and technological advances continue to shape and advance health care, there has been growing emphasis on translating these advances into improvement in overall health care quality outcomes in the United States. Innovators such as Abraham Flexner and Ernest Codman engaged in rigorous reviews of systems and patient outcomes igniting wider spread interest in quality improvement in health care. Codman's efforts even contributed to the founding of the American College of Surgeons. This society catalyzed a quality improvement initiative across the United States and the formation of the Joint Commission on Accreditation of Hospitals. Since that time, those such …

Quality Improvement And Spine Surgery., James Harrop

Department of Neurosurgery Faculty Papers

AO Spine North American (AOSNA) is honored to have the ability to present this focused issue on improving quality health care for spine patients. This issue is dedicated to improvements in quality for patient benefits.

Utilization Of A Continuous Pericapsular Nerve Group (Peng) Block With An Opioid-Sparing Repair Of A Femoral Neck Fracture In A Pediatric Patient, Karla Wyatt, Moustafa Zidane, Chyong-Jy Joyce Liu

Faculty, Staff and Students Publications

In the pediatric population, femoral neck fractures are usually associated with high-impact trauma and often present with pain in the groin area. Regional anesthesia can offer adjunctive therapy for acute pain management. Various techniques have been employed to circumvent pain related to hip fractures and resultant hip surgery. Neuraxial, lumbar plexus, caudal, epidural, fascia iliaca, and femoral continuous nerve block techniques are advantageous in mitigating hip pain. However, these approaches require patient repositioning during placement and carry the potential for motor blockade with resultant weakness. A newly described method, the Pericapsular Nerve Group (PENG) block, allows for analgesia of the …

Treatment Of Headache Associated With Subarachnoid Hemorrhage, Tamra Langley

DNP Projects

Abstract

Backgro

Abstract

Background: Subarachnoid hemorrhage (SAH) patients experience significant headaches that can last weeks to years. The treatment for these headaches has not been effective in successful alleviation of pain. Understanding the present standard of care will help guide future medication modalities for these patients.

Conceptual Framework: The Neuman Systems Model was utilized as a framework in this study.

Methodology: A retrospective review of the electronic records of patients who experienced a subarachnoid hemorrhage (SAH) at an academic health system in the southcentral part of the United States was done to evaluate patient demographics and comorbidities. Variables included Hunt-Hess …

Amelioration Of The Neuroinhibitory Local Environment After Ischemic Injury Through In Situ Astrocyte-To-Neuron Conversion, Abhinav K. Rao, Yu-Chen Chen, Ning-Xin Ma, Zi-Fei Pei, Susan Keefe, Emma Yellin, Miranda Chen, Fu-Han Yang, Xiao-Song He, Gong Chen

Phase 1

Ischemic injury in central nervous system (CNS) often causes severe neuronal loss and activates glial cells. We showed earlier that NeuroD1-mediated astrocyte-to-neuron (AtN) conversion can regenerate a substantial proportion of neurons (~40% of the total) and reconstruct the ischemic injured neural circuits. In this study, we focus on glial changes and blood vessel recovery following AtN conversion. Specifically, we found that ectopic expression of NeuroD1 in the reactive astrocytes after ischemic injury significantly reduced glial reactivity, as shown by less hypertrophic morphology, along with reduced secretion of neuroinhibitory factors such as CSPG and LCN2. As for microglia, we found less …

Developing An Online Critical Care Electroencephalography Curriculum For Epilepsy And Neurophysiology Fellows, Brooke Hancock, Anne Woehling, Nathanael Lee, Md, Connie Tang, Md, Allyson Pickard, Md, Andres Fernandez, Md

Phase 1

Purpose: This project aims to create an Electroencephalography (EEG) curriculum that synthesizes the teachings of current publications and faculty expertise within a single digital platform. The goal is to remedy the unmet need for a centralized resource for learners to use when learning EEG interpretation.

Methods: The target learner population is epilepsy and neurophysiology fellows. The platform will be accessible from any computer, tablet, or phone, allowing for mobile, self-paced learning to take place. To date, the curriculum outline has been designed with extensive literature review and collaboration from other institutions, and two pilot modules have been completed using the …

An Educational Workshop To Improve Neurology Resident Knowledge And Understanding Of Burnout, Substance Abuse, And Mood Disorders, Shiori Tomatsu, Ryan Donaghy, Patrick Kerns, Md, Phd, Courtney White, Md

Phase 1

Problem: Many medical residents are at risk for burnout, mood disorders, and substance abuse. We created an educational activity composed of an online module (OM), an interactive role-playing session (AL), and a video practicum (VP) to inform neurology residents on the aforementioned risks and available support resources. This project evaluates the efficacy of these tools.

Methods: PGY2 and PGY3 neurology residents were given OM. In addition, the PGY2 residents participated in AL. Three surveys were given to assess their knowledge about burnout before completing the module (Sur1), after AL session (Sur2), and after watching VP(Sur3).

Outcomes: More PGY2 residents scored …

Rescue Stenting For Failed Mechanical Thrombectomy Procedures, Joseph Schaefer, Ahmad Sweid, Md, M. Reid Gooch, Md, Pascal Jabbour, Md

Phase 1

Background: Mechanical thrombectomy (MT) has dramatically changed the natural history of acute ischemic stroke. The disease that was associated with high morbidity, mortality, and significant cost on the health care system became a treatable disease. One of the most important variables to improve outcomes is time to revascularize the ischemic tissue. Rescue stenting (RS) is an option for patients who fail MT.

Methods: A retrospective chart review for patients who underwent a MT procedure and either failed (defined as TICI 0-2a) or required a RS from 2015 – 2019 composed the study population. IRB approval was obtained and the consent …

Rna Sequencing Of Human Peripheral Nerve In Response To Injury: Distinctive Analysis Of The Nerve Repair Pathways., Andrew S. Welleford, Jorge E. Quintero, Nader El Seblani, Eric Blalock, Sumedha Gunewardena, Steven M. Shapiro, Sean M. Riordan, Peter Huettl, Zain Guduru, John A. Stanford, Craig G. Van Horne, Greg A. Gerhardt

Manuscripts, Articles, Book Chapters and Other Papers

The development of regenerative therapies for central nervous system diseases can likely benefit from an understanding of the peripheral nervous system repair process, particularly in identifying potential gene pathways involved in human nerve repair. This study employed RNA sequencing (RNA-seq) technology to analyze the whole transcriptome profile of the human peripheral nerve in response to an injury. The distal sural nerve was exposed, completely transected, and a 1 to 2 cm section of nerve fascicles was collected for RNA-seq from six participants with Parkinson's disease, ranging in age between 53 and 70 yr. Two weeks after the initial injury, another …

Recanalization Of The Chronically Occluded Internal Carotid Artery: Review Of The Literature., Mario Zanaty, Jorge A. Roa, Pascal Jabbour, Edgar A. Samaniego, David M. Hasan

Department of Neurosurgery Faculty Papers

Introduction: We reviewed the literature on interventions for patients with medically refractory chronically occluded internal carotid artery (COICA) to assess the risks and/or benefits after recanalization via an endovascular technique (ET) or hybrid surgery (HS, i.e., ET plus carotid endarterectomy).

Methods: A systematic search of the electronic databases was performed. Patients with COICA were classified into 4 different categories according to Hasan et al classification.

Results: Eighteen studies satisfied the inclusion criteria. Only 6 studies involved an HS procedure. We identified 389 patients with COICA who underwent ET or HS; 91% were males. The overall perioperative complication rate was 10.1% …

Early Surgery For Traumatic Spinal Cord Injury: Where Are We Now?, Jefferson R. Wilson, Christopher D. Witiw, Jetan Badhiwala, Brian K. Kwon, Michael G. Fehlings, James Harrop

Department of Neurosurgery Faculty Papers

Study Design: Narrative review.

Objective: There is a strong biological rationale to perform early decompression after traumatic spinal cord injury (SCI). With an enlarging clinical evidence base, most spine surgeons internationally now favor early decompression for the majority of SCI patients; however, a number of pertinent questions remain surrounding this therapy.

Methods: A narrative review evaluating the status of early surgery for SCI. In particular, we addressed the following questions: (1) Which patients stand to benefit most from early surgery? 2) What is the most appropriate time threshold defining early surgery?

Results: Although heterogeneity exists, the evidence generally seems to …

Minimizing Blood Loss In Spine Surgery., Christopher Mikhail, Zach Pennington, Paul M Arnold, Darrel S Brodke, Jens R Chapman, Norman Chutkan, Michael D Daubs, John G Devine, Michael G Fehlings, Daniel E Gelb, George M Ghobrial, James S Harrop, Christian Hoelscher, Fan Jiang, John J Knightly, Brian K Kwon, Thomas E Mroz, Ahmad Nassr, K Daniel Riew, Lali H Sekhon, Justin S Smith, Vincent C Traynelis, Jeffrey C Wang, Michael H Weber, Jefferson R Wilson, Christopher D Witiw, Daniel M Sciubba, Samuel K Cho

Department of Neurosurgery Faculty Papers

Study Design: Broad narrative review.

Objective: To review and summarize the current literature on guidelines, outcomes, techniques and indications surrounding multiple modalities of minimizing blood loss in spine surgery.

Methods: A thorough review of peer-reviewed literature was performed on the guidelines, outcomes, techniques, and indications for multiple modalities of minimizing blood loss in spine surgery.

Results: There is a large body of literature that provides a consensus on guidelines regarding the appropriate timing of discontinuation of anticoagulation, aspirin, nonsteroidal anti-inflammatory drugs (NSAIDs), and herbal supplements prior to surgery. Additionally, there is a more heterogenous discussion the utility of preoperative autologous …

Implementation Of A Spine-Centered Care Pathway At A Regional Academic Spine Center., George M Ghobrial, Jefferson Wilson, Daniel Franco, Kristen Vogl, Alexander R Vaccaro, James S Harrop

Department of Neurosurgery Faculty Papers

Study Design: Retrospective case series.

Objective: To describe the early implementation of an inpatient spinal surgery unit and measure the impact on cost and length of stay (LOS).

Methods: A retrospective case review was performed for frequent spine-related diagnosis-related groups (DRGs) cared for by a dedicated multidisciplinary team: combined anterior/posterior (AP) spinal fusion with major complicating or comorbid condition (MCC), combined (AP) spinal fusion with CC, combined (AP) spinal fusion without complicating or comorbid (CC)/MCC, cervical spinal fusion with MCC, cervical spinal fusion with CC, and cervical spinal fusion without CC/MCC. Four time periods were compared: historical control, initial pathway …

Brain Development: Why The Young Sleep Longer, Budhaditya Chowdhury, Orie T. Shafer

Advanced Science Research Center

From absorbing new languages to mastering musical instruments, young children are wired to learn in ways that adults are not (Johnson and Newport, 1989). This ability coincides with periods of intense brain plasticity during which neurons can easily remodel their connections (Hubel and Wiesel, 1970). Many children are also scandalously good sleepers, typically getting several more hours of sleep per night than their parents (Jenni and Carskadon, 2007). As sleep deprivation has negative effects on learning and memory, learning like a child likely requires sleeping like one (Diekelmann and Born, 2010). Yet, how the ability to sleep for longer is …