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Full-Text Articles in Investigative Techniques

A Literature Review Of Pain Control In Osteoarthritis Patients Using Blood Flow Restriction Training, John Gericke, Dakota Pastore, Tyler Pigott May 2024

A Literature Review Of Pain Control In Osteoarthritis Patients Using Blood Flow Restriction Training, John Gericke, Dakota Pastore, Tyler Pigott

Rowan-Virtua Research Day

Background: Osteoarthritis (OA) is a degenerative disease that mainly affects articular cartilage of joints. OA most commonly affects the knees and causes pain and reduces quality of life in older adults. Blood flow restriction (BFR) occludes arterial and venous flow during exercise using a blood pressure cuff placed on the proximal lower limb. This creates an intramuscular hypoxic environment which promotes muscle hypertrophy. High load training can cause pain and inflammation in knee OA patients due to increased stress. BFR can allow patients with knee OA to use lower loads to achieve beneficial effects of rehabilitation.

Methods: Data was ascertained …


Botulinum Toxin Type A Injections For Refractory Abdominal Dystonia: A Case Report, William J. Naber Ii, Jodi M. Wilhelm, Kurt A. Kuhlman, Gabriel Howard Nov 2023

Botulinum Toxin Type A Injections For Refractory Abdominal Dystonia: A Case Report, William J. Naber Ii, Jodi M. Wilhelm, Kurt A. Kuhlman, Gabriel Howard

Graduate Medical Education Research Journal

Background: A 58-year-old male with chronic bilateral treatment resistant abdominal spasms secondary complications of ascites/ alcoholic cirrhosis. Spasms would occur 4-5 times/day, lasting minutes to hours despite a 2-year course of therapeutic and pharmacological interventions. Due to treatment refraction, 6 uniformly spaced botulinum toxin type A (BTX-A) injections were placed per side, using electromyography for audible intramuscular syringe placement confirmation, while visual confirmation was made via ultrasound. During the initial trial, 6 evenly spaced injections were performed bilaterally, uniformly distributing 80U/side. Injections began bilaterally just medial to the junction of the inferior rib cage border/ anterior axillary line and progressed …


Rod-Specific Downregulation Of Omega-3 Very-Long-Chain Polyunsaturated Fatty Acid Pathway In Age-Related Macular Degeneration, William C. Gordon, Marie Audrey I. Kautzmann, Bokkyoo Jun, Megan L. Cothern, Zhide Fang, Nicolas G. Bazan Sep 2023

Rod-Specific Downregulation Of Omega-3 Very-Long-Chain Polyunsaturated Fatty Acid Pathway In Age-Related Macular Degeneration, William C. Gordon, Marie Audrey I. Kautzmann, Bokkyoo Jun, Megan L. Cothern, Zhide Fang, Nicolas G. Bazan

School of Medicine Faculty Publications

Docosahexaenoic acid (DHA; 22:6) plays a key role in vision and is the precursor for very-long-chain polyunsaturated fatty acids (VLC-PUFAs). The release of 32- and 34-carbon VLC-PUFAs and DHA from sn-1 and sn-2 of phosphatidylcholine (PC) leads to the synthesis of cell-survival mediators, the elovanoids (ELVs) and neuroprotectin D1 (NPD1), respectively. Macula and periphery from age-related macular degeneration (AMD) donor retinas were assessed for the availability of DHA-related lipids by LC-MS/MS-based lipidomic analysis and MALDI-molecular imaging. We found reduced retina DHA and VLC-PUFA pathways to synthesize omega-3 ELVs from precursors that likely resulted in altered disks and photoreceptor loss. Additionally, …


Stellate Ganglion Block For Refractory Raynaud’S Phenomenon- A Case Report, William J. Naber Ii, Derik J. Scribner, Gabriel Howard Jun 2023

Stellate Ganglion Block For Refractory Raynaud’S Phenomenon- A Case Report, William J. Naber Ii, Derik J. Scribner, Gabriel Howard

Graduate Medical Education Research Journal

Introduction: Raynaud’s phenomenon (RP) is predominately a sympathetically mediated ischemic vasospastic disease involving the distal limbs and is associated with sharp pains, numbness, and dermatological color changes. The symptoms are commonly induced by cold weather, stress, and trauma and it is known to affect 4.85% of the population. There are few well-defined treatments for patients with RP that are refractory to 1st-line therapies. We present a case of intractable RP with corresponding response to stellate ganglion block (SGB) which demonstrates the efficacy profile and safety of SNS blocks in treatment of resistant RP.

Methods: Per Bon Secours Mercy Health …


Preparing For The Unexpected: Recognizing A Tortuous Thoracic Aorta During Ultrasound-Guided Thoracentesis, Michael Choi, Jessica Roettger, Christopher J. Smith Jun 2023

Preparing For The Unexpected: Recognizing A Tortuous Thoracic Aorta During Ultrasound-Guided Thoracentesis, Michael Choi, Jessica Roettger, Christopher J. Smith

Graduate Medical Education Research Journal

Ultrasound-guidance has become the standard of care for bedside thoracentesis. This manuscript describes the importance of utilizing point-of-care-ultrasound (POCUS) and color Doppler in avoiding an unusual, but potentially catastrophic aortic puncture during thoracentesis. The case describes a 70 year-old man who presented with one week of shortness of breath. He was found to have a large left-sided pleural effusion on imaging studies. During a bedside POCUS examination, he was found to have a hyperechoic linear structure in his posterior left hemithorax. Ultrasound application of color Doppler revealed a pulsatile flow, confirming visualization of the aorta. The site of needle insertion …


Chatgpt As Metamorphosis Designer For The Future Of Artificial Intelligence (Ai): A Conceptual Investigation, Amarjit Kumar Singh (Library Assistant), Dr. Pankaj Mathur (Deputy Librarian) Mar 2023

Chatgpt As Metamorphosis Designer For The Future Of Artificial Intelligence (Ai): A Conceptual Investigation, Amarjit Kumar Singh (Library Assistant), Dr. Pankaj Mathur (Deputy Librarian)

Library Philosophy and Practice (e-journal)

Abstract

Purpose: The purpose of this research paper is to explore ChatGPT’s potential as an innovative designer tool for the future development of artificial intelligence. Specifically, this conceptual investigation aims to analyze ChatGPT’s capabilities as a tool for designing and developing near about human intelligent systems for futuristic used and developed in the field of Artificial Intelligence (AI). Also with the helps of this paper, researchers are analyzed the strengths and weaknesses of ChatGPT as a tool, and identify possible areas for improvement in its development and implementation. This investigation focused on the various features and functions of ChatGPT that …


Digital 3d Brain Mri Arterial Territories Atlas, Chin-Fu Liu, Johnny Hsu, Xin Xu, Ganghyun Kim, Shannon M. Sheppard, Erin L. Meier, Michael I. Miller, Argye E. Hillis, Andreia V. Faria Feb 2023

Digital 3d Brain Mri Arterial Territories Atlas, Chin-Fu Liu, Johnny Hsu, Xin Xu, Ganghyun Kim, Shannon M. Sheppard, Erin L. Meier, Michael I. Miller, Argye E. Hillis, Andreia V. Faria

Communication Sciences and Disorders Faculty Articles and Research

The locus and extent of brain damage in the event of vascular insult can be quantitatively established quickly and easily with vascular atlases. Although highly anticipated by clinicians and clinical researchers, no digital MRI arterial atlas is readily available for automated data analyses. We created a digital arterial territory atlas based on lesion distributions in 1,298 patients with acute stroke. The lesions were manually traced in the diffusion-weighted MRIs, binary stroke masks were mapped to a common space, probability maps of lesions were generated and the boundaries for each arterial territory was defined based on the ratio between probabilistic maps. …


Magnetic Resonance Imaging-Derived Microvascular Perfusion Modeling To Assess Peripheral Artery Disease, Olga A. Gimnich, Tatiana Belousova, Christina M. Short, Addison A. Taylor, Vijay Nambi, Joel D. Morrisett, Christie M. Ballantyne, Jean Bismuth, Dipan J. Shah, Gerd Brunner Jan 2023

Magnetic Resonance Imaging-Derived Microvascular Perfusion Modeling To Assess Peripheral Artery Disease, Olga A. Gimnich, Tatiana Belousova, Christina M. Short, Addison A. Taylor, Vijay Nambi, Joel D. Morrisett, Christie M. Ballantyne, Jean Bismuth, Dipan J. Shah, Gerd Brunner

School of Medicine Faculty Publications

BACKGROUND: Computational fluid dynamics has shown good agreement with contrast-enhanced magnetic resonance imaging measurements in cardiovascular disease applications. We have developed a biomechanical model of microvascular perfusion using contrast-enhanced magnetic resonance imaging signal intensities derived from skeletal calf muscles to study peripheral artery disease (PAD). METHODS AND RESULTS: The computational microvascular model was used to study skeletal calf muscle perfusion in 56 in-dividuals (36 patients with PAD, 20 matched controls). The recruited participants underwent contrast-enhanced magnetic resonance imaging and ankle-brachial index testing at rest and after 6-minute treadmill walking. We have determined associations of microvascular model parameters including the transfer …


A Quality Improvement Project To Improve Management Of Urinary Tract Infections In A System Of Pediatric Urgent Care Centers, Benjamin Klick, Tammy Speerhas, Jessica Parrott, Jeffrey Bobrowitz, Anne Mcevoy, Debra Conrad, Theresa Guins Jan 2023

A Quality Improvement Project To Improve Management Of Urinary Tract Infections In A System Of Pediatric Urgent Care Centers, Benjamin Klick, Tammy Speerhas, Jessica Parrott, Jeffrey Bobrowitz, Anne Mcevoy, Debra Conrad, Theresa Guins

Nursing Faculty Publications

Background and objective: Urinary tract infections (UTIs) are a common problem in pediatric urgent care medicine. There are multiple quality improvement (QI) projects related to the management of UTIs documented in the pediatric literature. We developed a project to decrease the prescribing of ultimately unneeded antibiotics for possible UTIs in a pediatric urgent care setting. A similar project has not been described in the pediatric literature.

Methods: We first reviewed the charts of patients presenting to a system of pediatric urgent care centers with a possible UTI over a 2-year period. We then launched a QI project with three plan, …


Three-Dimensional Evaluation Of The Mandibular Lingula On Cone-Beam Computed Tomographic Images In The Turkish Population, Zerrin Unal Erzurumlu, Damla Torul Dec 2022

Three-Dimensional Evaluation Of The Mandibular Lingula On Cone-Beam Computed Tomographic Images In The Turkish Population, Zerrin Unal Erzurumlu, Damla Torul

Journal of Dentistry Indonesia

Objective: The purpose of this study was to provide morphometric and anatomical data for mandibular lingula (Li) in The Turkish population using three dimensional-cone beam computed tomography (3D-CBCT) images. Methods: CBCT images of the patients taken between July 2020 and March 2021, were retrieved from the archival records. A total of 100 Li’s of 50 patients who met the criteria of this study were evaluated. The distances between the tip of the Li and ramal landmarks/occlusal plane were measured and the shape of the Li was evaluated on 3D-CBCT images. Results: CBCT images of the 50 patients (19 males and …


Rna Isolation In Duchenne Muscular Dystrophy (Dmd) Mice Models, Salem Abu Al-Burak Aug 2022

Rna Isolation In Duchenne Muscular Dystrophy (Dmd) Mice Models, Salem Abu Al-Burak

Undergraduate Student Research Internships Conference

Fibrosis is a progressive and typically irreversible disease process characterized by the excessive deposition of collagen in organs and in tissues of the musculoskeletal (MSK) system1,2. This process, which causes loss of organ and tissue function, can be initiated by micro-traumas3, an excessive and/or prolonged immune response1, the activation and proliferation of fibrosis-inducing progenitor cells4, and a pro-fibrotic extra-cellular microenvironment5. In parallel with the events that initiate fibrosis, genetic or environmental influences may cause cells and tissues to become predisposed to fibrosis development prior to initiation. This suggests that these …


Lip Biopsy Trends In The United States: A 7-Year Review Of Medicare Provider Utilization And Payment Database, Nardin Awad, Fady Awad, Amanda Azer May 2021

Lip Biopsy Trends In The United States: A 7-Year Review Of Medicare Provider Utilization And Payment Database, Nardin Awad, Fady Awad, Amanda Azer

Rowan-Virtua Research Day

Biopsy of the lip is a procedure most used by dermatologists in order to obtain histopathological evaluation of a lesion. It has remained the definitive method of diagnosis for many pathologies, including malignancy. However, although the incidence of lip malignancy has been relatively unchanged since 2012, the number of lip biopsies performed has not followed the same trend, but rather steeply declined since. In this study, the national trends in lip biopsies are evaluated. The Medicare Provider Utilization and Payment (MPUP) database was used to evaluate these practice trends in Medicare providers.


Under The Microscope: Painting From Histology, Meg Smith Apr 2021

Under The Microscope: Painting From Histology, Meg Smith

Senior Theses and Projects

My goal as an artist is to create paintings which explore the intersections of biology, philosophy, aesthetics, and personal experience. I want to challenge the viewer to engage with their own anatomy and physiology on a microscopic scale. I also aspire to communicate my sense of awe and wonder at the structures and mechanisms of life on every scale, from the cellular to the cosmic.

I am deeply interested in how physiological processes generate the human experience

—I became a neuroscience major because I was interested in the mechanisms of sensation and perception. My love of histology—the study of the …


Nebulizer-Based Systems To Improve Pharmaceutical Aerosol Delivery To The Lungs, Benjamin M. Spence Jan 2021

Nebulizer-Based Systems To Improve Pharmaceutical Aerosol Delivery To The Lungs, Benjamin M. Spence

Theses and Dissertations

Combining vibrating mesh nebulizers with additional new technologies leads to substantial improvements in pharmaceutical aerosol delivery to the lungs across therapeutic administration methods. In this dissertation, streamlined components, aerosol administration synchronization, and/or Excipient Enhanced Growth (EEG) technologies were utilized to develop and test several novel devices and aerosol delivery systems. The first focus of this work was to improve the poor delivery efficiency, e.g., 3.6% of nominal dose (Dugernier et al. 2017), of aerosolized medication administration to adult human subjects concurrent with high flow nasal cannula (HFNC) therapy, a form of continuous-flow non-invasive ventilation (NIV). The developed Low-Volume Mixer-Heater (LVMH) …


Diagnostic Accuracy Of Mcmurry’S Test In The Diagnosis Of Meniscal Tears, Jessica Smyth, Hartwell Rainey Dec 2020

Diagnostic Accuracy Of Mcmurry’S Test In The Diagnosis Of Meniscal Tears, Jessica Smyth, Hartwell Rainey

Physician Assistant Capstones, 2020-current

No abstract provided.


The Importance Of The Freeway Space In Orofacial Myofunctional Therapy, Robert M. Mason, Honor Franklin, Patricia Grant, Ellen B. Role Nov 2020

The Importance Of The Freeway Space In Orofacial Myofunctional Therapy, Robert M. Mason, Honor Franklin, Patricia Grant, Ellen B. Role

International Journal of Orofacial Myology and Myofunctional Therapy

The purpose of this article is to explain the importance of evaluating and documenting the freeway space (interdental rest position), in initial examinations and at the completion of therapy in patients exhibiting an open mandibular resting position. The freeway space measurements obtained can be shared with parents, patients, and referral sources. To this end, the muscular, neural, and sensory components related to the freeway space are discussed, as well as airway, dental eruption patterns, tactile feedback, and orthodontic relapse considerations. An extraoral method for evaluating the dimensions of the anterior freeway space is proposed.


Transcutaneous Energy Transmission: Can We Do It Now?, Yuriy Pya Oct 2020

Transcutaneous Energy Transmission: Can We Do It Now?, Yuriy Pya

The VAD Journal

The percutaneous driveline used in contemporary LVADs presents a continuous risk of infection for the duration of support. Minimizing infection in durable mechanical circulatory support systems requires total implantation of all components and energy transfer by means other than percutaneous drivelines. A novel coplanar energy transfer (CET) system, similar to the original transcutaneous energy transfer (TET) design, is unique by incorporating two large rings with coil-within-the-coil topology to ensure strong resonance power. The CET system consists of an internal integrated controller, a battery coupled with an internal thoracic coil ring, and the LVAD pump. External equipment includes a power transmission …


Single-Molecule Analysis Of Subtelomeres And Telomeres In Alternative Lengthening Of Telomeres (Alt) Cells, Heba Z. Abid, Jennifer Mccaffrey, Kaitlin Raseley, Eleanor Young, Katy Lassahn, Dharma Varapula, Harold Riethman, Ming Xiao Jan 2020

Single-Molecule Analysis Of Subtelomeres And Telomeres In Alternative Lengthening Of Telomeres (Alt) Cells, Heba Z. Abid, Jennifer Mccaffrey, Kaitlin Raseley, Eleanor Young, Katy Lassahn, Dharma Varapula, Harold Riethman, Ming Xiao

Medical Diagnostics & Translational Sciences Faculty Publications

BACKGROUND: Telomeric DNA is typically comprised of G-rich tandem repeat motifs and maintained by telomerase (Greider CW, Blackburn EH; Cell 51:887-898; 1987). In eukaryotes lacking telomerase, a variety of DNA repair and DNA recombination based pathways for telomere maintenance have evolved in organisms normally dependent upon telomerase for telomere elongation (Webb CJ, Wu Y, Zakian VA; Cold Spring Harb Perspect Biol 5:a012666; 2013); collectively called Alternative Lengthening of Telomeres (ALT) pathways. By measuring (TTAGGG) n tract lengths from the same large DNA molecules that were optically mapped, we simultaneously analyzed telomere length dynamics and subtelomere-linked structural changes at a large …


Visual Estimates Of Blood Loss By Medical Laypeople: Effects Of Blood Loss Volume, Victim Gender, And Perspective, Rachel Phillips, Marc Friberg, Mattias Lantz Cronqvist, Carl-Oscar Jonson, Erik Prytz Jan 2020

Visual Estimates Of Blood Loss By Medical Laypeople: Effects Of Blood Loss Volume, Victim Gender, And Perspective, Rachel Phillips, Marc Friberg, Mattias Lantz Cronqvist, Carl-Oscar Jonson, Erik Prytz

Psychology Faculty Publications

A severe hemorrhage can result in death within minutes, before professional first responders have time to arrive. Thus, intervention by bystanders, who may lack medical training, may be necessary to save a victim's life in situations with bleeding injuries. Proper intervention requires that bystanders accurately assess the severity of the injury and respond appropriately. As many bystanders lack tools and training, they are limited in terms of the information they can use in their evaluative process. In hemorrhage situations, visible blood loss may serve as a dominant cue to action. Therefore, understanding how medically untrained bystanders (i.e., laypeople) perceive hemorrhage …


Evaluating The Occurrence Of Age-Related Peripheral Neuropathy In Het3 Mice And Development Of A Whole Tissue Imaging Technique For Analyzing Total Innervation In The Subcutaneous Adipose Depot, Jake Willows Dec 2019

Evaluating The Occurrence Of Age-Related Peripheral Neuropathy In Het3 Mice And Development Of A Whole Tissue Imaging Technique For Analyzing Total Innervation In The Subcutaneous Adipose Depot, Jake Willows

Electronic Theses and Dissertations

Adipose tissue can be characterized as either being a white (energy storing) depot or a brown (energy expending) depot and both have been found to contain dense networks of neural innervation. This adipose nerve supply regulates numerous metabolic functions and likely plays an important role in the function of adipose blood vessels. Recently our lab has shown in the C57BL/6 mouse model that peripheral neuropathy, or the dying back and dysfunction of the nerves in the superficial tissues such as the skin, can extend into the subcutaneous adipose tissue in conditions commonly associated with the neuropathic phenotype (i.e. diabetes, obesity, …


Point-Of-Care Ultrasound For The Pediatric Limp, Lucas Friedman Md Oct 2019

Point-Of-Care Ultrasound For The Pediatric Limp, Lucas Friedman Md

Pediatrics

Objectives

  • Describe the technique and use of POCUS in the Limping Child
  • Describe the use of POCUS in the diagnosis and treatment of Septic arthritis


A Rare Manifestation Of A Bleeding Tubulovillous Duodenal Polyp Presenting As An Upper Gastrointestinal Hemorrhage, Neethi Dasu, Yaser Khalid, Herman Suga, Michael Itidiare, Richard Walters May 2019

A Rare Manifestation Of A Bleeding Tubulovillous Duodenal Polyp Presenting As An Upper Gastrointestinal Hemorrhage, Neethi Dasu, Yaser Khalid, Herman Suga, Michael Itidiare, Richard Walters

Rowan-Virtua Research Day

• Duodenal polyps are a group of polyps that are fairly uncommon to find on endoscopic evaluation (1).

• They are histologically classified according to mucin phenotype into intestinal and gastric subtypes; the intestinal-type polyps are morphologically subdivided into tubular and tubulovillous adenomas (2)

• We present a case of a 76-year-old male with recurrent hematemesis who was found to have an intestinal-type pedunculated tubulovillous adenoma (TVA) in the descending duodenum • An isolated occurrence of non-ampullary sporadic duodenal adenomas (SDA)’s are a rare finding and presentation as an upper GI hemorrhage is extremely uncommon (3)

• Furthermore, our patient’s …


Seeing Eye To Eye: A Machine Learning Approach To Automated Saccade Analysis, Maigh Attre May 2019

Seeing Eye To Eye: A Machine Learning Approach To Automated Saccade Analysis, Maigh Attre

Honors Scholar Theses

Abnormal ocular motility is a common manifestation of many underlying pathologies particularly those that are neurological. Dynamics of saccades, when the eye rapidly changes its point of fixation, have been characterized for many neurological disorders including concussions, traumatic brain injuries (TBI), and Parkinson’s disease. However, widespread saccade analysis for diagnostic and research purposes requires the recognition of certain eye movement parameters. Key information such as velocity and duration must be determined from data based on a wide set of patients’ characteristics that may range in eye shapes and iris, hair and skin pigmentation [36]. Previous work on saccade analysis has …


Aortoduodenal Fistula Forms From Primary Aortic Stump Graft In A Two-Time Multi-Visceral Transplant Patient With Presentation Of Gastrointestinal Bleed And Bowel Perforation: A Case Report, Brielle Corrente Mar 2019

Aortoduodenal Fistula Forms From Primary Aortic Stump Graft In A Two-Time Multi-Visceral Transplant Patient With Presentation Of Gastrointestinal Bleed And Bowel Perforation: A Case Report, Brielle Corrente

Graduate Student Research Symposium

Usually not diagnosed until open laparotomy, aortoduodenalfistulas (ADF) are one of the rarest complications of intestinal transplant surgery. With an incidence rate of only 0.04% at autopsy and only 250 documented cases since the early 1800’s, aortoduodenal fistulas are the most deadly complications of intestinal transplantation with a mortality rate of 100% without surgical intervention. A 39 year old, two-time multi-visceral transplant African American female patient suffered from a primary aortoduodenal fistula formation in a primary modified multi-visceral transplant aortic stump graft site. With emergency open laparotomy repair, revascularization of the secondary multi-visceral transplant was performed, saving the life of …


Illumination Of The Golgi Apparatus Of Pathogenic And Nonpathogenic Naegleria Species, Tyler M. Poe Jan 2019

Illumination Of The Golgi Apparatus Of Pathogenic And Nonpathogenic Naegleria Species, Tyler M. Poe

Theses and Dissertations

In this study, Naegleria fowleri, a pathogenic amoeba and the causative agent of Primary Amebic Meningoencephalitis (PAM), was utilized to determine the presence or absence of classically conserved Golgi molecules featured in the expression of a Golgi apparatus. Previous studies concluded no Golgi expression via light microscopy and transmission electron microscopy, but a recent report on Naegleria gruberi indicated the presence of dispersed Golgi tubules. Non-pathogenic species of the Naegleria genus such as Naegleria gruberi 30540 and Naegleria lovaniensis 30569 were utilized in Western immunoblot analysis compared to reduced whole-cell lysate proteins of two strains of N. fowleri and …


Can Nanotechnology Be The Leading Method In Detecting And Treating Cerebral Tumors?, Daniel D. Singh, Zuri Jules-Culver Jan 2019

Can Nanotechnology Be The Leading Method In Detecting And Treating Cerebral Tumors?, Daniel D. Singh, Zuri Jules-Culver

OUR Journal: ODU Undergraduate Research Journal

Nanotechnology refers to the manipulation or design of materials and structures with desired features in the 1nm–1000 nm size range. The blood brain barrier (BBB) is a major obstacle that drugs must overcome in order to reach tumor cells. The role of this barrier is to transport essential nutrients while protecting and regulating the internal environment. Nanoparticles have been shown to transport drugs through this barrier and accumulate in tumor cells. This is significant since nanoparticles are drug carriers allowing chemotherapeutic drugs to accumulate in target areas (Sun et al., 2017). This is possible because they are able to be …


The Chapman Bone Algorithm: A Diagnostic Alternative For The Evaluation Of Osteoporosis, Elise Levesque, Anton Ketterer, Wajiha Memon, Cameron James, Noah Barrett, Cyril Rakovski, Frank Frisch Sep 2018

The Chapman Bone Algorithm: A Diagnostic Alternative For The Evaluation Of Osteoporosis, Elise Levesque, Anton Ketterer, Wajiha Memon, Cameron James, Noah Barrett, Cyril Rakovski, Frank Frisch

Mathematics, Physics, and Computer Science Faculty Articles and Research

Osteoporosis is the most common metabolic bone disease and goes largely undiagnosed throughout the world, due to the inaccessibility of DXA machines. Multivariate analyses of serum bone turnover markers were evaluated in 226 Orange County, California, residents with the intent to determine if serum osteocalcin and serum pyridinoline cross-links could be used to detect the onset of osteoporosis as effectively as a DXA scan. Descriptive analyses of the demographic and lab characteristics of the participants were performed through frequency, means and standard deviation estimations. We implemented logistic regression modeling to find the best classification algorithm for osteoporosis. All calculations and …


Longitudinal Measures Of Deformation Are Associated With A Composite Measure Of Contractility Derived From Pressure-Volume Loop Analysis In Children., Shahryar M. Chowdhury, Ryan J. Butts, Carolyn L. Taylor, Varsha M. Bandisode, Karen S. Chessa, Anthony M. Hlavacek, Arni Nutting, Girish S. Shirali, G Hamilton Baker May 2018

Longitudinal Measures Of Deformation Are Associated With A Composite Measure Of Contractility Derived From Pressure-Volume Loop Analysis In Children., Shahryar M. Chowdhury, Ryan J. Butts, Carolyn L. Taylor, Varsha M. Bandisode, Karen S. Chessa, Anthony M. Hlavacek, Arni Nutting, Girish S. Shirali, G Hamilton Baker

Manuscripts, Articles, Book Chapters and Other Papers

Aims: The relationship between echocardiographic measures of left ventricular (LV) systolic function and reference-standard measures have not been assessed in children. The objective of this study was to assess the validity of echocardiographic indices of LV systolic function via direct comparison to a novel composite measure of contractility derived from pressure-volume loop (PVL) analysis.

Methods and results: Children with normal loading conditions undergoing routine left heart catheterization were prospectively enrolled. PVLs were obtained via conductance catheters. A composite invasive composite contractility index (ICCI) was developed using data reduction strategies to combine four measures of contractility derived from PVL analysis. Echocardiograms …


Echocardiographic Detection Of Increased Ventricular Diastolic Stiffness In Pediatric Heart Transplant Recipients: A Pilot Study., Shahryar M. Chowdhury, Ryan J. Butts, Anthony M. Hlavacek, Carolyn L. Taylor, Karen S. Chessa, Varsha M. Bandisode, Girish S. Shirali, Arni Nutting, G Hamilton Baker Mar 2018

Echocardiographic Detection Of Increased Ventricular Diastolic Stiffness In Pediatric Heart Transplant Recipients: A Pilot Study., Shahryar M. Chowdhury, Ryan J. Butts, Anthony M. Hlavacek, Carolyn L. Taylor, Karen S. Chessa, Varsha M. Bandisode, Girish S. Shirali, Arni Nutting, G Hamilton Baker

Manuscripts, Articles, Book Chapters and Other Papers

Background: Pediatric heart transplant recipients are at risk for increased left ventricular (LV) diastolic stiffness. However, the noninvasive evaluation of LV stiffness has remained elusive in this population. The objective of this study was to compare novel echocardiographic measures of LV diastolic stiffness versus gold-standard measures derived from pressure-volume loop (PVL) analysis in pediatric heart transplant recipients.

Methods: Patients undergoing left heart catheterization were prospectively enrolled. PVLs were obtained via conductance. The end-diastolic pressure-volume relationship was obtained via balloon occlusion. The stiffness constant, β, was calculated. Echocardiographic measures of diastolic function were derived from spectral and tissue Doppler and two-dimensional …


Use Of An Optical Scanning Device To Monitor The Progress Of Noninvasive Treatments For Chest Wall Deformity: A Pilot Study, Robert E. Kelly Jr., Robert J. Obermeyer, Ann Kuhn, Frazier W. Frantz, Mohammad F. Obeid, Nahom Kidane, Frederic D. Mckenzie Jan 2018

Use Of An Optical Scanning Device To Monitor The Progress Of Noninvasive Treatments For Chest Wall Deformity: A Pilot Study, Robert E. Kelly Jr., Robert J. Obermeyer, Ann Kuhn, Frazier W. Frantz, Mohammad F. Obeid, Nahom Kidane, Frederic D. Mckenzie

Computational Modeling & Simulation Engineering Faculty Publications

Background: The nonsurgical treatment of chest wall deformity by a vacuum bell or external brace is gradual, with correction taking place over months. Monitoring the progress of nonsurgical treatment of chest wall deformity has relied on the ancient methods of measuring the depth of the excavatum and the protrusion of the carinatum. Patients, who are often adolescent, may become discouraged and abandon treatment. Methods: Optical scanning was utilized before and after the intervention to assess the effectiveness of treatment. The device measured the change in chest shape at each visit. In this pilot study, patients were included if they were …