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2017

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Articles 661 - 690 of 3040

Full-Text Articles in Medical Specialties

The Interprofessional Academy Of Educators: Inclusive, Collaborative, Innovative, Tanya M. Custer, Kim Michael Oct 2017

The Interprofessional Academy Of Educators: Inclusive, Collaborative, Innovative, Tanya M. Custer, Kim Michael

Posters and Presentations: Medical Imaging & Therapeutic Sciences

Issue to be addressed: To elevate the educational mission of the institution, UNMC established the Interprofessional Academy of Educators in 2016. Designed by educators for educators, this interprofessional community strives to improve health professions education by encouraging curricular innovation, supporting educational scholarship & offering mentorship for early career and seasoned educators.

Method: The inaugural class included a unique blend of medical scholars from 8 Colleges, 2 Institutes, Academic Affairs, IT Services, and Library Sciences. Members span a 500-mile wide campus. Eight SIGs foster interprofessional collaboration & scholarship. An academically diverse leadership team of five oversees the Academy.


Motion Artifact Evaluation Of Coronary Ct Angiography Images, Hongfeng Ma Oct 2017

Motion Artifact Evaluation Of Coronary Ct Angiography Images, Hongfeng Ma

Dissertations (1934 -)

The objective of this dissertation was to develop and validate an automated algorithm to quantify motion artifact level on coronary CT angiography (CCTA) images. Unlike existing motion artifact reduction techniques that evaluate the relative level of motion artifacts within one exam, this dissertation aims to quantify the absolute level of motion artifacts across exams from varying patients. The ability to quantify absolute motion artifact level enables several potential applications, for example, assessing and comparing two motion artifact reduction techniques. This dissertation includes three specific aims. Aim 1 investigated the absolute motion artifact quantification effectiveness of six motion artifact metrics using …


Outcomes Of Pulmonary Embolism In A Tertiary Setting., Nicole Stansbury, James K. Wu Md Oct 2017

Outcomes Of Pulmonary Embolism In A Tertiary Setting., Nicole Stansbury, James K. Wu Md

Department of Surgery

No abstract provided.


Economic Impact Of Pharmacist Participiation In The Neurocritical Care Unit., Keithan Sivakumar Md, Shweta Varade Md, Jason Laskosky Pharmd, Bcps, Adam Edwards Md, Preet Varade Md Oct 2017

Economic Impact Of Pharmacist Participiation In The Neurocritical Care Unit., Keithan Sivakumar Md, Shweta Varade Md, Jason Laskosky Pharmd, Bcps, Adam Edwards Md, Preet Varade Md

Department of Medicine

No abstract provided.


Long-Term Detection Of Atrial Fibrillation With Insertable Cardiac Monitors In A Real-World Cryptogenic Stroke Population., Paul D Ziegler, John D Rogers, Scott W Ferreira, Allan J Nichols, Mark Richards, Jodi L Koehler, Shantanu Sarkar Oct 2017

Long-Term Detection Of Atrial Fibrillation With Insertable Cardiac Monitors In A Real-World Cryptogenic Stroke Population., Paul D Ziegler, John D Rogers, Scott W Ferreira, Allan J Nichols, Mark Richards, Jodi L Koehler, Shantanu Sarkar

Heart and Vascular Articles

BACKGROUND: The long-term incidence of atrial fibrillation (AF) in cryptogenic stroke (CS) patients has been explored in carefully controlled clinical trials but real-world data are limited. We investigated the two-year incidence of AF in real-world clinical practice among a large cohort of patients with an insertable cardiac monitor (ICM) placed for AF detection following CS.

METHODS: Patients in the de-identified Medtronic Discovery™ Link database who received an ICM (Reveal LINQ™) for the purpose of AF detection following CS were included and monitored for up to 2years. All detected AF episodes (≥2min) were adjudicated. We quantified the AF detection rate using …


Improving Clinical Outcomes In A Neurocritical Intensive Care Unit Through Collaboration And Innovation., Shweta Varade Md, Keithan Sivakumar Md, Mba, Maureen T. Smith Msn, Rn, Cnrn, Adam Edwards Md, Preet Varade Md Oct 2017

Improving Clinical Outcomes In A Neurocritical Intensive Care Unit Through Collaboration And Innovation., Shweta Varade Md, Keithan Sivakumar Md, Mba, Maureen T. Smith Msn, Rn, Cnrn, Adam Edwards Md, Preet Varade Md

Department of Medicine

No abstract provided.


Black Esophagus With Superimposed Candida In A Patient With B Cell Lymphoma: A Case Study., Christopher Lenivy Do, Patrick Hickey Do, Adam Peyton Do Oct 2017

Black Esophagus With Superimposed Candida In A Patient With B Cell Lymphoma: A Case Study., Christopher Lenivy Do, Patrick Hickey Do, Adam Peyton Do

Department of Medicine

No abstract provided.


A Rare Presentation Of Hsv Type 2 Hepatitis., Jahangir Khan Md, Anam Malik Md, Sandhya Venkataraman Do, Hina A. Sheikh, Amy Slenker Md Oct 2017

A Rare Presentation Of Hsv Type 2 Hepatitis., Jahangir Khan Md, Anam Malik Md, Sandhya Venkataraman Do, Hina A. Sheikh, Amy Slenker Md

Department of Medicine

No abstract provided.


Mighty Rapalink-1 Vanquishes Undruggable Mutant Mtor In Glioblastoma, Meena Jhanwar-Uniyal Oct 2017

Mighty Rapalink-1 Vanquishes Undruggable Mutant Mtor In Glioblastoma, Meena Jhanwar-Uniyal

NYMC Faculty Publications

No abstract provided.


Global Respiratory Syncytial Virus-Associated Mortality In Young Children (Rsv Gold): A Retrospective Case Series, Nienke M. Scheltema, Angela Gentile, Florencia Lucion, D James Nokes, Patrick K. Munywoki, Shabir A. Madhi, Michelle J. Groome, Cheryl Cohen, Jocelyn Moyes, Syed Asad Ali Oct 2017

Global Respiratory Syncytial Virus-Associated Mortality In Young Children (Rsv Gold): A Retrospective Case Series, Nienke M. Scheltema, Angela Gentile, Florencia Lucion, D James Nokes, Patrick K. Munywoki, Shabir A. Madhi, Michelle J. Groome, Cheryl Cohen, Jocelyn Moyes, Syed Asad Ali

Department of Paediatrics and Child Health

Background: Respiratory syncytial virus (RSV) infection is an important cause of pneumonia mortality in young children. However, clinical data for fatal RSV infection are scarce. We aimed to identify clinical and socioeconomic characteristics of children aged younger than 5 years with RSV-related mortality using individual patient data.

Methods: In this retrospective case series, we developed an online questionnaire to obtain individual patient data for clinical and socioeconomic characteristics of children aged younger than 5 years who died with community-acquired RSV infection between Jan 1, 1995, and Oct 31, 2015, through leading research groups for child pneumonia identified through a comprehensive …


Measuring Home Environments Across Cultures: Invariance Of The Home Scale Across Eight International Sites From The Mal-Ed Study, Paul C. Jones, Laura L. Pendergast, Barbara A. Schaefer, Muneera Rasheed, Erling Svensen, Rebecca Scharf, Rita Shrestha, Angelina Maphula, Reeba Roshan, Zeba Rasmussen Oct 2017

Measuring Home Environments Across Cultures: Invariance Of The Home Scale Across Eight International Sites From The Mal-Ed Study, Paul C. Jones, Laura L. Pendergast, Barbara A. Schaefer, Muneera Rasheed, Erling Svensen, Rebecca Scharf, Rita Shrestha, Angelina Maphula, Reeba Roshan, Zeba Rasmussen

Department of Paediatrics and Child Health

The home environment provides the context for much of a child's early development. Examples of important aspects of the home environment include safety, cleanliness, and opportunities for cognitive stimulation. This study sought to examine the psychometric properties of an adapted form of the Home Observation for the Measurement of the Environment (HOME; Caldwell & Bradley, 1984, 2003) across the eight international sites of the MAL-ED project (Dhaka, Bangladesh; Vellore, India; Bhakatapur, Nepal; Naushahro Feroze, Pakistan; Fortaleza, Brazil; Loreto, Peru; Venda, South Africa; Haydom, Tanzania), to identify a factor structure that fit the data at all sites, and to derive a …


Frequency And Outcome Of Acute Neurologic Complications After Congenital Heart Disease Surgery, Sidra Kaleem Jafri, Lubaina Ehsan, Qalab Abbas, Fatima Ali, Prem Chand, Anwarul Haque Oct 2017

Frequency And Outcome Of Acute Neurologic Complications After Congenital Heart Disease Surgery, Sidra Kaleem Jafri, Lubaina Ehsan, Qalab Abbas, Fatima Ali, Prem Chand, Anwarul Haque

Department of Paediatrics and Child Health

Objectives: To determine the frequency and immediate outcome of acute neurologic complications (ANCs) in children undergoing congenital heart surgery (CHS).
Materials and Methods: Inthis retrospective study, all patients undergoing CHS at our hospital from January 2007 to June 2016 were included. Patients were followed up for the development of seizures, altered level of consciousness (ALOC), abnormal movements, and stroke. Results are presented as mean with standard deviation and frequency with percentages.
Results: Of 2000 patients who underwent CHS at our center during the study, 35 patients (1.75%) developed ANC. Seizures occurred in 28 (80%), ALOC in 5 (14%), clinical stroke …


Transfusion-Related Acute Lung Injury In A Paediatric Intensive Care Unit Of Pakistan, Muhammed Tariq, Zehra Dhanani, Qalab Abbas, Humaira Jurair, Farheen Karim Mahar, Anwarul Haque Oct 2017

Transfusion-Related Acute Lung Injury In A Paediatric Intensive Care Unit Of Pakistan, Muhammed Tariq, Zehra Dhanani, Qalab Abbas, Humaira Jurair, Farheen Karim Mahar, Anwarul Haque

Department of Paediatrics and Child Health

Background: Transfusion-Related Acute Lung Injury (TRALI) is a major cause of transfusionrelated morbidity and mortality in the intensive care unit setting. There is a paucity of such data from Pakistan. The purpose of this study is to assess the incidence and outcome of TRALI in critically ill children admitted in a pediatric intensive care unit (PICU) of Pakistan.
Methods: This is a retrospective cohort study of all critically ill or injured children who developed TRALI or "possible" TRALI after blood transfusion based on Canadian Conference Consensus criteria in a closed multidisciplinary-cardiothoracic PICU from January 2012 to June 2016. The demographic, …


Teaching Basic Pediatric Intensive Care Course To Pediatric Residents And Consultants, Humaira Jurair, Qalab Abbas, Anwar Ul Haque Oct 2017

Teaching Basic Pediatric Intensive Care Course To Pediatric Residents And Consultants, Humaira Jurair, Qalab Abbas, Anwar Ul Haque

Department of Paediatrics and Child Health

No abstract provided.


Prevalence Of Noncompliance Of Control Visits In Hypertensivepatients Treated At Primary Referral Hospitals And Related Factors, Nikko Darnindro, Johannes Sarwono Sep 2017

Prevalence Of Noncompliance Of Control Visits In Hypertensivepatients Treated At Primary Referral Hospitals And Related Factors, Nikko Darnindro, Johannes Sarwono

Jurnal Penyakit Dalam Indonesia

Introduction. According to WHO, hypertension is associated with 7.5 million deaths worldwide or 12.8% of all deaths. Meanwhile, based on Riskesdas 2013 in Indonesia, hypertension is still a major health problem with a prevalence of 26.5%. Noncompliance is a major cause of treatment failure of hypertension and risk factors for cardiovascular comorbidity. No previous research has been found that examines patient control compliance in the suburban community. This study aims to analyze the prevalence of patients who did not control after hypertension treatment in primary referral hospitals Methods. This study was a retrospective study, by tracking medical records in patients …


Validity And Reability Test Of Indonesian Version Of World Healthorganization Quality Of Life-Hiv Bref Questionnaire To Measurethe Quality Of Life Patients With Hiv/Aids, Nanda N. Muhammad, Hamzah Shatri, Zubairi Djoerban Sep 2017

Validity And Reability Test Of Indonesian Version Of World Healthorganization Quality Of Life-Hiv Bref Questionnaire To Measurethe Quality Of Life Patients With Hiv/Aids, Nanda N. Muhammad, Hamzah Shatri, Zubairi Djoerban

Jurnal Penyakit Dalam Indonesia

Introduction. Health-related quality of life among HIV patients can be used as one of several indicators of successful therapy. WHOQOL-HIV BREF questionnaire is one of the instruments used to assess the patients’ quality of life that has been used in many countries, but never been tested for its validity and reliability in Indonesia. This study aims to determine the validity and reliability of the questionnaire WHOQOL-HIV BREF in bahasa Indonesia as a tool for measuring the quality of life of HIV patients. Methods. A cross-sectional study was conducted in HIV Integrated Service Unit Cipto Mangunkusumo General Hospital (RSCM) Jakarta in …


Peripheral Artery Disease Accompanied By Intermittentclaudication In Rural Areas Of Sikka Regency – A Cross Sectionalstudy With Pulse Palpation Methods And Its Risk Factors, Naldo Sofian, Garry Prasetyo, Stephanie Wibisono Sep 2017

Peripheral Artery Disease Accompanied By Intermittentclaudication In Rural Areas Of Sikka Regency – A Cross Sectionalstudy With Pulse Palpation Methods And Its Risk Factors, Naldo Sofian, Garry Prasetyo, Stephanie Wibisono

Jurnal Penyakit Dalam Indonesia

Introduction. There are few studies regarding peripheral artery disease (PAD by intermittent claudication) on adults in Indonesia, including its risk factors. This study aims to determine relationship and comparison of PAD accompanied by intermittent intermittent claudication risk factors in adult, especially in rural areas of Sikka regency, Flores, measured by pulse palpation. Methods. A cross sectional study in 3 primary healthcare working areas in Sikka regency and consecutive sampling had been done. Interview of risk factors was conducted and blood pressure was taken from all four extremities in supine position. Ankle brachial index (ABI) value was defined as systolic blood …


Apakah Hemodialisis Tiga Kali Seminggu Lebih Baik?, Pringgodigdo Nugroho Sep 2017

Apakah Hemodialisis Tiga Kali Seminggu Lebih Baik?, Pringgodigdo Nugroho

Jurnal Penyakit Dalam Indonesia

No abstract provided.


Clinical Features And Quality Of Life In End Stage Renal Diseasepatients Undergoing Hemodialysis Twice A Week Compared Tothrice A Week, Fitri Imelda, Endang Susalit, M Bonar M. Marbun Sep 2017

Clinical Features And Quality Of Life In End Stage Renal Diseasepatients Undergoing Hemodialysis Twice A Week Compared Tothrice A Week, Fitri Imelda, Endang Susalit, M Bonar M. Marbun

Jurnal Penyakit Dalam Indonesia

Introduction. National Kidney Foundation Kidney Disease Outcomes Quality Initiative (NFK-KDOQI) recommends thrice weekly hemodialysis (HD) However, in Indonesia, most patients are given HD twice a week. Therefore it is necessary to investigate the clinical features and quality of life in End Stage Renal Disease (ESRD) patients undergoing twice-weekly HD. This study aimed to identify the clinical features and the quality of life in ESRD patients undergoing hemodialysis twice a week. Methods. A cross-sectional study was conducted in ESRD patients undergoing twice-weekly HD and thrice-weekly HD at Cipto Mangunkusumo Hospital and some private hospitals in Jakarta. Blood samples were obtained for …


Diagnosis And Treatment Of Celiac Disease, Harini Oktadiana, Murdani Abdullah, Kaka Renaldi Sep 2017

Diagnosis And Treatment Of Celiac Disease, Harini Oktadiana, Murdani Abdullah, Kaka Renaldi

Jurnal Penyakit Dalam Indonesia

Celiac disease is a reversible, proximal immune enteropathy resulting from the interaction of dietary gluten with the intestinal immune system. Celiac disease can produce varied manifestations and may develop at any age. New cases have increased substantially, due to increase awareness and better diagnostic tools. Standard diagnosis of celiac disease is based on positive serologic tests and histopathologic examination of duodenal biopsies. Treatment of celiac disease with free gluten diet will improve symptoms, quality of life, reduce risk of malignancy and complication. Nowadays, treatment strategy of celiac disease with non-dietary therapies is still underdevelopment.


Conformance Level Of Histopathological Examination In Biopsypre Colonoscopy Compared To Histopathological Examinationin Surgery With Tumors In The Colon At The Endoscopy Andgastrointestinal Centre Of Rscm, Ifransyah Fuadi, Dadang Makmun, Ening Krisnuhoni Sep 2017

Conformance Level Of Histopathological Examination In Biopsypre Colonoscopy Compared To Histopathological Examinationin Surgery With Tumors In The Colon At The Endoscopy Andgastrointestinal Centre Of Rscm, Ifransyah Fuadi, Dadang Makmun, Ening Krisnuhoni

Jurnal Penyakit Dalam Indonesia

Introduction. Level of agreement comparison between biopsy per colonoscopy examination is used to measure of the quality of a colonoscopy examination and needed to be identified. This study aims to identify level of agreement comparison between histopathologic examination of biopsy per colonoscopy and histopathologic examination per surgical. Methods. A cross sectional study was conducted by using medical records from patients with colon tumor who had undergone histopathologic examination with biopsy per colonoscopy and then confirmed by surgical procedure in PESC RSPUN dr. Cipto Mangunkusumo between 1st January, 2006 31st December, 2015. Level of agreement calculated using comparative agreement category test …


Reliability And Validity Test Of Indonesian Version Short Form12 Quality Of Life Questionnaire In Rheumatoid Arthritis Patient, Nabil Mubtadi Falah, Rudi Putranto, Bambang Setyohadi Sep 2017

Reliability And Validity Test Of Indonesian Version Short Form12 Quality Of Life Questionnaire In Rheumatoid Arthritis Patient, Nabil Mubtadi Falah, Rudi Putranto, Bambang Setyohadi

Jurnal Penyakit Dalam Indonesia

Introduction. Rheumatoid Arthritis is a chronic disease requiring a long-term medication affecting quality of life. Short Form 12 is a generic questionnaire to assess patients quality of life and has been validated in England. This study was designed to test reliability and validity of Indonesian version of SF-12 questionnaire. Methods. Sixty-five patients with clinically diagnosed RA using ACR/EULAR criterion were interviewed using Short Form 36 and Short Form 12 questionnaire. Validity was assessed with construct validity and external validity, while reliability tested with internal consistency and test-retest method. Results. Short-Form 12 (Indonesian Version) did not proved having a good validity, …


Diagnosis And Treatment Of Conn Syndrome: A Case Study, Muhammad Syah Abdaly, Juliyanti Juliyanti, Maruhum Bonar Marbun Sep 2017

Diagnosis And Treatment Of Conn Syndrome: A Case Study, Muhammad Syah Abdaly, Juliyanti Juliyanti, Maruhum Bonar Marbun

Jurnal Penyakit Dalam Indonesia

Acute neuromuscular disorder is a commonly found medical condition, which may prove to be fatal in certain conditions. Hypokalemia is one possible cause of neuromuscular disorder. In patient with hypokalemia accompanied with hypertension, primary hyperaldosteronism might be the primary cause. Primary hyperaldosteronism (Conn syndrome) is clinically known as a triad, which is consists of hypertension, hypokalemia, and metabolic alkalosis. In this article, the case of a patient with neuromuscular disorder is presented, and after evaluation, it was found that the patient was suffered from the Conn syndrome


Obstetricians' And Gynecologists' Knowledge, Education, And Practices Regarding Chronic Hepatitis B In Pregnancy., Bolin Niu, Dina Halegoua-De Marzio, Jonathan M. Fenkel, Steven K. Herrine Sep 2017

Obstetricians' And Gynecologists' Knowledge, Education, And Practices Regarding Chronic Hepatitis B In Pregnancy., Bolin Niu, Dina Halegoua-De Marzio, Jonathan M. Fenkel, Steven K. Herrine

Division of Gastroenterology and Hepatology Faculty Papers

Background: In pregnant women with high viral loads, third-trimester initiation of antiviral agents can reduce the risk of vertical transmission. We aimed to assess obstetricians' and gynecologists' (OB-GYN) knowledge and clinical practice when treating pregnant women with chronic hepatitis B virus (HBV).

Methods: All program directors (PDs) from 250 US OB-GYN residency programs were invited to anonymously complete an 18-item questionnaire. Descriptive statistics were calculated and analyzed.

Results: A total of 323 participants responded, including both PDs (n=51, response rate 21%) and residents (n=272, response rate 11%). Responding PDs (62% university-based vs. 32% community-based) came from various practice types. All …


Capsule Endoscopy In Left Ventricular Assist Device Patients: Retrospective Review Of Efficacy And Necessity, Gaurang N. Vaidya, Michael Krease, Ali Dahhan, Rajakrishnan Vijayakrishnan, Thomas Abell, Emma Birks, Dmitry Abramov Sep 2017

Capsule Endoscopy In Left Ventricular Assist Device Patients: Retrospective Review Of Efficacy And Necessity, Gaurang N. Vaidya, Michael Krease, Ali Dahhan, Rajakrishnan Vijayakrishnan, Thomas Abell, Emma Birks, Dmitry Abramov

The VAD Journal

Introduction: Capsule endoscopy (CE) is mainstream in the evaluation of obscure gastrointestinal bleeding (GIB) in the general population. However, the diagnostic and therapeutic impact of CE in LVAD patients susceptible to transient bleeding remains largely unexplored. This study aimed to assess the benefits of CE in the evaluation of LVAD associated GIB.

Methods: Retrospective review of patients implanted with a continuous flow LVAD who underwent inpatient capsule endoscopy (CE) between January 2014 and May 2017 at our center. Identification of lesions with high bleeding potential or presence of frank blood were considered abnormal findings on CE study.

Result: Twenty-five inpatients …


Angptl4 Promotes The Progression Of Cutaneous Melanoma To Brain Metastasis., Sivan Izraely, Shlomit Ben-Menachem, Orit Sagi-Assif, Tsipi Meshel, Diego M Marzese, Shuichi Ohe, Inna Zubrilov, Metsada Pasmanik-Chor, Dave S B Hoon, Isaac P Witz Sep 2017

Angptl4 Promotes The Progression Of Cutaneous Melanoma To Brain Metastasis., Sivan Izraely, Shlomit Ben-Menachem, Orit Sagi-Assif, Tsipi Meshel, Diego M Marzese, Shuichi Ohe, Inna Zubrilov, Metsada Pasmanik-Chor, Dave S B Hoon, Isaac P Witz

Articles, Abstracts, and Reports

In an ongoing effort to identify molecular determinants regulating melanoma brain metastasis, we previously identified Angiopoietin-like 4 (ANGPTL4) as a component of the molecular signature of such metastases. The aim of this study was to determine the functional significance of ANGPTL4 in the shaping of melanoma malignancy phenotype, especially in the establishment of brain metastasis. We confirmed that ANGPTL4 expression is significantly higher in cells metastasizing to the brain than in cells from the cutaneous (local) tumor from the same melanoma in a nude mouse xenograft model, and also in paired clinical specimens of melanoma metastases than in primary melanomas …


The Influence Of A Kdt501, A Novel Isohumulone, On Adipocyte Function In Humans, Brian S. Finlin, Beibei Zhu, Bernard P. Kok, Cristina Godio, Philip M. Westgate, Neile Grayson, Robert Sims, Jeffrey S. Bland, Enrique Saez, Philip A. Kern Sep 2017

The Influence Of A Kdt501, A Novel Isohumulone, On Adipocyte Function In Humans, Brian S. Finlin, Beibei Zhu, Bernard P. Kok, Cristina Godio, Philip M. Westgate, Neile Grayson, Robert Sims, Jeffrey S. Bland, Enrique Saez, Philip A. Kern

Internal Medicine Faculty Publications

Objective: In a phase II clinical trial in nine obese, insulin-resistant humans, we observed that treatment with KDT501, a novel isohumulone drug, increased total and high-molecular weight (HMW) adiponectin in plasma. The objective was to determine whether KDT501 increased adiponectin secretion from subcutaneous white adipose tissue (SC WAT) and the underlying mechanism(s).

Methods: Nine obese participants with either prediabetes or with normal glucose tolerance plus three features of metabolic syndrome were part of the study. SC WAT biopsies were performed before and after 28 days of KDT501 treatment in a clinical research setting. In addition, a cold stimulus was used …


Diffusion Tensor Imaging For Ruptured Cerebral Arteriovenous Malformation, Muhammad Waqas, Ayesha Siddiqui, Fatima Mubarak, Ather Enam Sep 2017

Diffusion Tensor Imaging For Ruptured Cerebral Arteriovenous Malformation, Muhammad Waqas, Ayesha Siddiqui, Fatima Mubarak, Ather Enam

Section of Neurosurgery

Non-ruptured arteriovenous malformations (AVMs) rarely cause tract disruption. Few studies have described how ruptured AVMs influence white matter (WM) tract morphology. We reviewed consecutive AVM cases treated at a tertiary care hospital where diffusion tensor imaging (DTI) tractography was obtained preoperatively. DTI was performed using the Synaptive Plan (Synaptive Medical Inc., Toronto, Canada). Quality control was performed by clinical application specialist. Perinidal fractional anisotropy (FA) value of corticospinal tracts (CST) was obtained. A reference FA value was obtained from the corresponding area on the contralateral side. Images were evaluated by a consultant neuroradiologist. Radiological findings were correlated with clinical findings. …


Concussion As A Multi-Scale Complex System: An Interdisciplinary Synthesis Of Current Knowledge, Erin S. Kenzie, Elle L. Parks, Erin D. Bigler, Miranda M. Lim, James C. Chesnutt, Wayne Wakeland Sep 2017

Concussion As A Multi-Scale Complex System: An Interdisciplinary Synthesis Of Current Knowledge, Erin S. Kenzie, Elle L. Parks, Erin D. Bigler, Miranda M. Lim, James C. Chesnutt, Wayne Wakeland

Complex Systems Faculty Publications and Presentations

Traumatic brain injury (TBI) has been called “the most complicated disease of the most complex organ of the body” and is an increasingly high-profile public health issue. Many patients report long-term impairments following even “mild” injuries, but reliable criteria for diagnosis and prognosis are lacking. Every clinical trial for TBI treatment to date has failed to demonstrate reliable and safe improvement in outcomes, and the existing body of literature is insufficient to support the creation of a new classification system. Concussion, or mild TBI, is a highly heterogeneous phenomenon, and numerous factors interact dynamically to influence an individual’s recovery trajectory. …


Precursor Processes Of Human Self-Initiated Action, Nima Khalighinejad, Aaron Schurger, Andrea Desantis, Leor Zmigrod Sep 2017

Precursor Processes Of Human Self-Initiated Action, Nima Khalighinejad, Aaron Schurger, Andrea Desantis, Leor Zmigrod

Psychology Faculty Articles and Research

A gradual buildup of electrical potential over motor areas precedes self-initiated movements. Recently, such “readiness potentials” (RPs) were attributed to stochastic fluctuations in neural activity. We developed a new experimental paradigm that operationalized self-initiated actions as endogenous ‘skip’ responses while waiting for target stimuli in a perceptual decision task. We compared these to a block of trials where participants could not choose when to skip, but were instead instructed to skip. Frequency and timing of motor action were therefore balanced across blocks, so that conditions differed only in how the timing of skip decisions was generated. We reasoned that across-trial …