Medical Specialties Commons^™

Nci Multi-Omics Mislabeling Challenge: A Machine Learning Approach, Yeshwant Chillakuru, Arjun Panda, Sindhu Kubendran, Norman Lee

GW Research Days 2016 - 2020

Sample mislabeling is a pervasive problem in biomedical research, especially large-scale multi-omics studies, contributing to errors and leading to false conclusions. The Food and Drug Administration (FDA) and the National Cancer Institute Clinical Proteomic Tumor Analysis Consortium (NCI-CPTA) have launched a data science challenge to address this problem. We developed a novel machine learning based approach that combines traditional machine learning with learning from cancer genomics literature to identify mislabeled tumors in the NCI-CPTA Multi-omics Mislabeling Challenge.

The training data contained a sample of a tumor from 80 different patients, each containing features on gender, microsatellite instability (MSI) status, and …

The Pivotal Role Of Mri In The Diagnosis Of Listeria Rhomboencephalitis, K.R Uprety, M Reza Taheri

GW Research Days 2016 - 2020

Sixty-six year-old female presented to the Emergency Department with history of several days of headache, malaise, chills, and fatigue with accompanying nausea, vomiting, and inability to tolerate oral intake. She had no history of fever and remained afebrile at the time of presentation. Physical exam and immediate lab values were non-contributory; CSF was obtained and sent for analysis. The patient was placed preemptively on acyclovir, as viral meningitis was the admitting diagnosis. MRI of the brain showed abnormal FLAIR signal hyperintensity and enhancement involving the entire cisternal segment of the left trigeminal nerve, which extended dorsally along the nerve fiber …

Breast Lesions Detected Via Molecular Breast Imaging: Physiological Parameters Affecting Interpretation, Jason Ching, Rachel Brem

GW Research Days 2016 - 2020

Rationale and Objectives:

To evaluate correlations between molecular breast imaging (MBI) descriptor characteristics and positive predictive value (PPV) in detecting breast cancer.

Materials and Methods:

A retrospective review was performed on 193 suspicious findings from 153 women (31-81 years) with positive MBI examinations. We assessed associations between: (i) lesion pattern (mass vs. non-mass) and PPV; (ii) lesion pattern and suspected likelihood of cancer (low vs. moderate vs. high); (iii) background parenchymal uptake (BPU) (homogeneous vs. heterogeneous) and PPV; (iv) breast density (dense vs. non-dense) and PPV; (v) BPU and density.

Results:

One hundred ten of 153 patients were diagnosed with …

Total Hip Arthroplasty: Copd And Its Effect On Postoperative Complications, Camille Boustani, Shane A. Sobrio, Alex Gu, Chapman Wei, Andrew Holmes

GW Research Days 2016 - 2020

Introduction

The demand for Total Hip Arthroplasty (THA) has rapidly risen and continues to due to high success rates of this procedure and the growing aging population. Particularly in Chronic Obstructive Pulmonary Disease (COPD), studies have indicated an increased risk of various postoperative complications across several surgery types. Despite the prevalence of COPD, very little has been investigated regarding postsurgical complications in patients with COPD following a THA. The aim of the current study is to utilize the NSQIP database and determine differences in short-term postoperative complications after undergoing THA, comparing patients with and without COPD.

Methods

In total, 74,814 …

An Assessment Of Cultural Perceptions And Recognition Of Ebola Virus Disease, And Its Correlation With Traditional Burial Practice In Rural Guinea, Chulwoo Park, Amira Roess, Sally Lahm, Mamadou Kally Bah, Mohamed Campel Camara, John Sandberg

GW Research Days 2016 - 2020

Background:

In the midst of the unprecedented Ebola outbreak in West Africa during 2014-2016, the humanitarian response to control the disease was hampered in part because there was a limited understanding of local traditional rituals or indigenous medicine (ethnomedicine) on the part of the responders. The Ebola outbreak claimed 11,310 lives, more than all other outbreaks combined. West African burial funeral ceremonies and surrounding rituals may have hindered interventions that included the forceful removal of the sick or dead from the community.

Objective:

Our objective was to understand transmission associated with traditional burial practices in rural Guinea. Through the lens …

Pupillometric Assessment Of Small Doses Of Opioid In A Pediatric Population, David Strum, Elizabeth Malphrus, Kevin Jackson, Julia Finkel

GW Research Days 2016 - 2020

According to the CDC, opioid prescriptions in the United States have more than tripled from 1999-2014, which has correlated with the staggering increase in opioid-involved drug overdose deaths. This pattern of prescription is thought to be a major contributory factor to the increase in drug overdose in America, as four out of five new heroin users started by misusing prescription painkillers. Providers need the means to objectively monitor analgesic efficacy of treatment in patients with pain to mitigate unnecessary analgesic prescribing.

It is well established that mu opioid agonists like morphine cause miosis, an effect to which tolerance does not …

The Association Of Polymorphism Rs3736228 Within The Lrp5 Gene With Bone Mineral Density In A Cohort Of Caucasian Young Adults, Mohamed J. H. Al-Amoodi, Whitney Jones, Danny Lee, Steven Mckenzie, Helen C. Miller, Zach Zeller, Seth Stubblefield, Susan Knoblach, Heather Gordish-Dressman, Dustin Hittel, Laura L. Tosi

GW Research Days 2016 - 2020

INTRODUCTION: Osteoporosis is a significant burden for our aging population. Developing a better understanding of the genetic underpinnings of poor bone quality may assist in the future development of prevention strategies. Correa-Rodriguez et al. have identified a group of single nucleotide polymorphisms (SNPs) that were associated with bone mineral density (BMD) in a population of Spanish Caucasians. In particular, they found that SNP rs3736228 in the low-density lipoprotein receptor related protein 5 (LRP5) gene had an influence on BMD. While the role of LRP5 in the Wnt canonical pathway has been fairly well characterized, its association with phenotypic BMD and …

Parental Compliance For Two Stage Fowler-Stephens Laparoscopic Orchiopexy: Is Everyone Following Up For The Second Stage And, If Not, Who Is At Risk?, Campbell Grant, H. Gil Rushton, Tanya D. Davis

GW Research Days 2016 - 2020

Purpose: Patients undergoing a two-stage Fowler-Stephens laparoscopic orchiopexy for intra-abdominal testes are typically recommended to undergo the second stage 4-6 months after the first stage. . As part of a quality care initiative, our studied examined if patients were in fact following up within this window and, if not, why patients were lost to follow up.

Materials and Methods: We retrospectively reviewed a cohort of 105 patients who underwent the first stage of a 2-stage Fowler-Stephens orchidopexy at our institution between 1/2005 to 1/2015. Bivariate and multivariate analyses were performed to compare clinical, surgical, and socioeconomic factors. Patients identified as …

Morbid Obesity Is Associated With Postoperative Complications In Laparoscopic Hysterectomy, Margaret Berrigan, Maria Victoria Vargas, Alex Gu, Chapman Wei, Hannah Robinson, Paul Tyan, Gaby Moawad

GW Research Days 2016 - 2020

Background: The prevalence of obesity in American women is 38.3%. Hysterectomy is the second most common surgery in reproductive age women; most of these procedures are performed laparoscopically. From 2011 to 2015, 3.2% of women age 15-44 years underwent hysterectomy; 89.6% of these procedures were performed for management of medical conditions including uterine fibroids, menstrual disorders, uterine prolapse, and endometriosis. The high rates of obesity and hysterectomy in women demand better understanding of the relationship between obesity and postoperative complications following laparoscopic hysterectomy. Methods: We conducted a retrospective cohort study using the American College of Surgeons National Quality Improvement Database …

Onyx Use In Extracranial Pathologies - A Retrospective Case Review, Faezeh Razjouyan, Rishi Sood, Alex Cho, Anthony Venbrux, Shawn Sarin

GW Research Days 2016 - 2020

Purpose:

Onyx is an embolic agent currently FDA approved for neurointerventional procedures such as in the treatment of aneurysms and arteriovenous malformations. Despite its limited indications, the agent's off-label use in the treatment of extracranial pathologies continues to increase. To date, there has not been a single-center study demonstrating a large number of cases demonstrating safe and effective peripheral embolization with Onyx.

Materials:

We performed a retrospective review of all cases that used Onyx between October 2010 and July 2016 at a single tertiary care academic university urban hospital. Institutional review board approval was appropriately obtained. Initial case selection was …

Lumbar Decompression Surgery: Does Chronic Steroid Use Increase The Risk Of Postoperative Infectious Complications? – A Study Of The National Surgical Quality Improvement Program (Nsqip) Database, Shane Sobrio, Mikel Thista, Raj Rao, Alex Gu, Chapman Wei, Warren Yu

GW Research Days 2016 - 2020

Intro: It has long been established that corticosteroids have a negative impact on the human immune system’s ability to function at an optimal level. Many past studies have shown that patient’s will have higher rates of infection if they are taking chronic steroids. What has yet to be established is just how much of an increased risk patients on chronic steroids have for infection after undergoing lumbar decompression surgeries, of which there are thousands per year. We hypothesize that patients on chronic steroids will have higher rates of surgical site infections and higher rates of other infections (UTI, pneumonia, etc.) …

Tumor Surveillance Using Liquid Biome In Pediatric High Grade Gliomas, Erin Bonner, Eshini Panditharatna, Madhuri Kambhampati, Stefaan Van Gool, Wilfried Stuecker, Roger J. Packer, Javad Nazarian

GW Research Days 2016 - 2020

Immunotherapy is currently being used to treat pediatric brain cancer, though its efficacy in treating patients with diffuse intrinsic pontine glioma (DIPG), the deadliest pediatric brain tumor, has not been evaluated. MRI is the gold standard for monitoring tumor response to therapy, but is limited by pseudoresponse and psuedoprogression: post-treatment, immune cells infiltrate the primary tumor causing transient tumor enlargement, which falsely resembles tumor progression on MRI. Thus, it is critical to develop more accurate approaches to monitor tumor response to immunotherapy. Here, we use a liquid biopsy platform we have already established to monitor tumor response to therapy, to …

Evaluation Of Group Movement Programs (Plié And Paired Plié) For People With Memory Loss, Alzheimer’S Disease Or Dementia, Martin Blanco, Deborah Barnes

GW Research Days 2016 - 2020

Today, one in ten people ages 65 and older have Alzheimer’s dementia. This serious condition often causes great suffering among affected individuals and their families, and there are no medications that stop or slow the disease. It is therefore important to evaluate alternative interventions that may benefit both patients and their care partners. Preventing Loss of Independence through Exercise (PLIÉ) and Paired PLIÉ are group movement programs that combine neuroscience and integrative medicine for individuals with dementia. We analyzed data from [N=39] anonymous evaluation surveys performed as part of two ongoing randomized control trials. Survey data included general questions on …

Comparison Of Existing Methods For Algorithmic Classification Of Dementia In The Health And Retirement Study, Kan Z. Gianattasio, Qiong Wu, M Maria Glymour, Melinda C. Power

GW Research Days 2016 - 2020

Background: Dementia ascertainment is difficult and costly, hindering the use of large, representative studies such as the Health and Retirement Study (HRS) to monitor trends or disparities in dementia. To address this issue, multiple groups of researchers have developed algorithms to classify dementia status in HRS participants using data from HRS and the Aging, Demographics, and Memory Study (ADAMS), an HRS sub-study that systematically ascertained dementia status. However, the relative performance of each algorithm has not been systematically evaluated.

Objective: To compare the performance of five existing algorithms, overall and by sociodemographic subgroups.

Methods: We created two standardized datasets: (a) …

Shigellosis And Giardiasis Among People Living With Hiv In Washington, Dc, 2012-2016, Kimesha Linton, Kerri Dorsey, Sasha Mcgee, Preetha Iyengar, Garret Lum, Rupali Doshi

GW Research Days 2016 - 2020

Background: Shigellosis and giardiasis are transmitted via food, water, and fecal-oral contact. CDC has recently reported increased shigellosis among men who have sex with men (MSM) and among people living with HIV (PLWH), particularly stage 3. Our goal was to characterize the incidence and risk factors associated with shigellosis and giardiasis among PLWH in Washington, DC, in an era of robust availability of antiretroviral treatment.

Methods: We conducted a retrospective analysis of HIV, shigellosis and giardiasis cases reported to the District of Columbia Department of Health from 2012 to 2016. We used LinkPlus to probabilistically match individuals with reported …

(Video) Barriers To Implementing Advance Care Planning In The Healthcare Setting, Dona Occhipinti, Matias Attene Ramos

GW Research Days 2016 - 2020

Objectives: Current barriers to implementing Advanced Care Planning (ACP) will be examined as applied to the healthcare system.

Methods: A literature review was performed looking at the current practices of ACP (e.g. filling out advanced directives (AD), Medical Orders for Life Sustaining Treatment (MOLST)/ Physician Orders for Life Sustaining Treatment (POLST), etc.), physician comfort level with having end-of-life discussion (EOL), successful/unsuccessful interventions to increase ACP/EOL discussions among health care providers (HCP), and the current political environment with respect to physicians’ ability to implement ACP/EOL discussions. Cochrane, Pubmed, and Google Scholar were searched for papers written in English after …

(Video) Outreach Services To Treat Women Living With Obstetric Fistula: A Systematic Review, Pauline Pamela Pratt, Rashida Muhammad

GW Research Days 2016 - 2020

Background: Obstetric fistula is a condition experienced by women who because of prolonged labor become incontinent forming one or more holes in between the rectum and the vagina or the vagina and the bladder (Heller, A., 2017). The hole causes uncontrollable stool and urine to leak from the woman. For most women with obstetric fistula, the duration of the labor leading to fistula varied between 5 hours and 9 days, averaging 3.0 days long (Heller, A., 2017). Women who suffer from this from this condition are do not have access to quality medical care. While prevention is the priority and …

Disparities In Diabetes Rates And Quality Of Care Within Immigrants In The Usa, Anyun Chatterjee, Martin Blanco, George Gray

GW Research Days 2016 - 2020

Immigrants to the USA present an interesting opportunity to test the classical public health question of the impact of place on a health outcome. Diabetes is a prevalent disease in the USA which is slated to rise in rate in the future. Currently, 9.4% of the country is diabetic, and another 28% of the country is prediabetic. We posed the question - is this impact felt disproportionately by immigrants as they live in the US for a decade or more? Our preliminary literature search indicated that this has not been studied extensively, although the impact of American fast food on …

Recurrent Episodes Of Acute Pancreatitis Present To The Ed With More Severe Disease By Ct Than First-Time Acute Pancreatitis, Maryam Boumezrag, Hamza Ijaz, Lorna Richards, Sormeh Harounzadeh, Angeline Johny, Paige Kulie, Caitlin Davis, Yan Ma, Maxine Le Saux, Andrew C. Meltzer

GW Research Days 2016 - 2020

Study Objective: Approximately 30% of patients with one episode of acute pancreatitis experience a recurrent episode. The objective of this study is to compare the severity of the first-time episode versus recurrent episodes of acute pancreatitis based on CT scan.

Methods: This study was conducted as part of a retrospective chart review at a single academic urban emergency department from 2012-2016. Criteria for inclusion included clinical symptoms of pancreatitis, age greater than or equal to 18 years, ED diagnosis of acute pancreatitis, and, an abdominal CT scan within 24 hours of triage. Exclusion criteria were traumatic cause of acute pancreatitis …

Characteristics Of Correctly Identified Pediatric Obesity And Overweight Status And Management In An Academic General Pediatric Clinic, Ana Morais, Joseph Kelly, James E. Bost, Susma Vaidya

GW Research Days 2016 - 2020

Objective: The goals of this study were to identify and characterize the rates of documentation and guideline-based management of overweight and obese children within an academic pediatric clinic.

Population/Methods: Overweight, obese, and severely obese children were identified from 7,422 well child visits in 2016 within a primary care clinic that cares for a primarily urban, minority (80% African American), and Medicaid (85%) population until the age of 12. During this 1-year study, there were 79 pediatric residents, 19 attending pediatricians, and 5 nurse practitioners who treated patients. Through a retrospective electronic medical record review, diagnosis and treatment including counseling, …

A Survey Of Language Diversity And Communication In Indian Academic Emergency Departments, Rebecca S. Allen, Lalit Narayan, Jay Pandya, Zohray Talib, Katherine A. Douglass

GW Research Days 2016 - 2020

Background

Communication in the Emergency Department (ED) is particularly important given the acuity of patients and lack of prior medical history. In India, patient care is further complicated by the many spoken languages, the regional differentiation in language and the fact that medical training is primarily delivered in English. Our objective was to document language diversity among clinicians in Indian EDs linked to an international training program and explore issues related to clinician-clinician and clinician-patient communication.

Methodology

A cross-sectional survey of ED clinicians was conducted from May to July 2017. Survey participants were recruited via convenience sampling by a researcher …

Risk For Post-Spinal Surgery Complications Associated With Pre-Operative Blood Transfusions, Ryan Lee, William Probasco, Alex Gu, Raj Rao

GW Research Days 2016 - 2020

Introduction: The frequency of spinal surgeries has increased dramatically in the United States over the past decade and, as with all surgeries, spinal procedures carry inherent risks for complications after the operation. Recently, it has been recognized that procedures in which intra-operative/post-operative blood transfusions are administered carry a higher risk of postoperative morbidity and increased length of hospital stay (Seisean et al.). Despite this, there is little literature, currently, analyzing post-operative complications associated with blood transfusions taking place 72 hours prior to spinal operations. The aim of this study was to investigate the prevalence of pre-operative blood transfusions in …

Legionnaire's Disease Presenting With Severe Rhabdomyolysis And Acute Renal Failure: A Case Report, Benjamin Plotz, Victoria K. Shanmugam

GW Research Days 2016 - 2020

Legionnaire's disease is caused by Legionella species, and is a recognized but rare cause of rhabdomyolysis. Legionella species live in water, and exposure to inoculated water systems leads to transmission of the disease, and commonly causes pneumonia in infected individuals. While the mechanism of muscle destruction legionella infection causes is not fully understood, the prevailing theory is that rhabdomyolysis is linked to an endotoxin released by the bacteria into the blood stream. Massive muscle necrosis manifests as limb weakness, muscle pain, swelling, and gross pigmenturia due to the release of electrolytes, myoglobin, and other sarcoplasmic proteins into the bloodstream. A …

Resilience Of Children With Chronic Health Conditions: The Impact Of Neuropsychiatric Comorbidities, Sarah Bernstein, Sandra Cushner-Weinstein

GW Research Days 2016 - 2020

BACKGROUND: Resilience, the ability to overcome adversity and effectively recover from stressful experiences, is a complex theory with many contributing factors. Previous studies have shown that condition-specific summer camps for children with chronic health conditions increase resilience and adaptive coping skills, change attitudes toward the illness, and improve quality of life. The aim of this study was to determine how neuropsychiatric comorbid diagnoses such as attention deficit hyperactivity disorder (ADHD), learning disability, and anxiety disorder influence the resilience of children with chronic health conditions.

METHODS: Children with chronic health conditions including autism, epilepsy, cerebral palsy, Tourette’s syndrome, sickle cell anemia, …

Enriching The Medical Student Radiology Clerkship: Simulating The Radiologist’S Experience, Liqi Shu, Faraien Bahri, Navid Mostaghni, Ramin Javan

GW Research Days 2016 - 2020

Background

Current radiology training in medical schools is still predominantly limited to passively observing the radiologist at the workstation and through lectures, textbooks and online sources. Evaluation is also mainly limited on still image interpretation or knowledge-based multiple-choice questions. Furthermore, students may have specific interests based on their choice of residency. In order to create a tailored and active learning experience, and to evaluate students’ ability in image interpretation, we utilized an open-source web-based Picture archiving and communication system (PACS) named "Weasis" and integrated a report system.

Method

We establish a new PACS teaching system by utilizing the open-source PACS …

Urinary Tract Infection In Children With Spina Bifida And Spinal Cord Injury., Obumneke Amadi, Harolyn Belcher

GW Research Days 2016 - 2020

Introduction: Urinary tract infections (UTI) are one of the most common bacterial infections (Schappert & Rechtsteiner, 2008; Litwin et al., 2005). Data from the National Ambulatory Medical Care Survey estimated that UTI caused 8.1 million physicians visits (Schappert & Rechtsteiner, 2008). Children with spina bifida (SB) and spinal cord injury (SCI) are at high risk for UTI (Ouyang et al., 2010; Nair et al., 2005). The purpose of this study was to examine the organisms associated with UTI in the population of children with SB and SCI who were treated in out-patient and in-patient settings at the Kennedy Krieger …

Comparing Cardiac Dynamics Between Neonatal And Adult Rats, Luther Swift, Rafael Jaimes, Morgan Burke, J Hiebert, Nikki G. Posnack

GW Research Days 2016 - 2020

Background:

Cardiovascular physiology studies have been largely limited to adult models; yet, significant developmental differences exist between the immature and adult heart. The field of pediatric research has largely been limited to immortalized cardiomyocyte cell lines, which lack physiologically relevant action potentials, and primary neonatal myocytes that have a limited life span and lack physiologically relevant automaticity. As a result, our understanding of developmental changes in ion channel expression, t-tubule development, and excitation-contraction coupling have been deduced from 2D simplified cell models. To fully understand cardiac development from neonate to adult, a physiologically-relevant 3D whole heart model is needed to …

Cost-Effectiveness Of Alternative Anticoagulation Strategies For Postoperative Management Of Total Knee Arthroplasty Patients, Savannah R. Smith, Jeffrey Katz, Elena Losina

GW Research Days 2016 - 2020

Background: Anticoagulation is essential for deep vein thrombosis (DVT) and pulmonary embolism (PE) prevention following total knee arthroplasty (TKA). Some research has suggested that longer duration anticoagulation can substantially reduce the risks of DVT and PE; however, in the absence of definitive recommendations, physicians are left weighing the risks of DVT and PE against those of anticoagulation, including gastrointestinal (GI) and central nervous system (CNS) hemorrhage and increased likelihood of prosthetic joint infection (PJI). We conducted a cost-effectiveness analysis to evaluate the benefits and risks of 14- and 35-day therapy with the most commonly prescribed anticoagulants post-TKA.

Background: Anticoagulation is …

Climate Change, Natural Disasters, And Suicide: A Systematic Review, Ans Irfan, Peter Lapuma

GW Research Days 2016 - 2020

Background.
Natural disasters are projected to increase due to climate change. Mental health is not a well-researched area in public health, particularly as it relates to environmental health and in the aftermath of natural disasters. The suicide rate is approximately 13 per 100,000 people in the US, nationally. This already high suicide rate warrants researching this area mental health. Understanding the relation between natural disasters and suicide rates might help alleviate human suffering and potentially save lives in the future, in post-disaster settings. This research will further the knowledge of the association between natural disasters and suicide and provide foundation …

Promotion Of New Diabetes Products In The District Of Columbia, Joy Eckert, Dilpan Sundaramoorthy, Alycia Hogenmiller

GW Research Days 2016 - 2020

Background: Growth in pharmaceutical expenditures for diabetes outpaced growth in diabetes prevalence. Prescribers accepting gifts and meals from pharmaceutical companies have been linked with higher prescription rates and costs[1]. Pharmaceutical marketing to these prescribers and patients often promotes newer, more expensive drugs, such as the GLP-1 analogues and SGL-2 inhibitors. These two drug classes are more expensive but no more effective than metformin,[2] the recommended first-line treatment for diabetes, and the oldest and cheapest available treatment. We investigated how cost of diabetes treatment was affected by marketing practices in the District of Columbia.

Methods: The AccessRx program …