Digital Commons Network^™

Reducing Use Of Computed Tomography For Diagnosing Appendicitis In A Pediatric Emergency Department, Sharmaine Ross

St. Chris Research Day

No abstract provided.

Quantifying Patient Positioning Errors And Radiation Dose Variation In Cardiac Computed Tomography Angiography, Yasser H. Hadi, Hassan B. Hawsawi, Niamh Moore, Helle Precht, Andrew England, Mark Mcentee

Journal of the Saudi Heart Association

Objectives: Accurate patient centring at the computed tomography (CT) scanner isocentre is essential for optimising radiation dose. This study aimed to quantify positioning errors, assess their relationship with radiation dose, and estimate the potential dose reduction achievable with optimal centring. Methods: This retrospective observational study included adult patients (≥18 years) who underwent electrocardiography (ECG)-gated cardiac CT angiography between January 2023 and July 2025 at a tertiary hospital. Scans were performed using Siemens SOMATOM Force dual-source CT systems. Vertical and lateral deviations from the scanner isocentre were calculated from scout images using integrated analytics within the institutional dose monitoring platform (Qaelum …

Inflammatory Markers In The Emergency Department And Ptsd Symptoms In The Aurora Study: A Longitudinal Cohort Study, Kristen Nishimi, Sarah Linnstaedt, Thomas Neylan, Lauren Mckibben, Liz Marie Albertorio-Sáez, Ying Zhao, Stacey House, Francesca Beaudoin, Xinming An, Jennifer Stevens, Gari Clifford, Tanja Jovanovic, Laura Germine, Scott Rauch, John Haran, Alan Storrow, Paul Musey, Phyllis Hendry, Sophia Sheikh, Brittany Punches, Robert Swor, Jose Pascual, Mark Seamon, Elizabeth M Datner, Claire Pearson, David Peak, Roland Merchant, Robert Domeier, Niels Rathlev, Brian O'Neil, Paulina Sergot, Leon Sanchez, Steven Bruce, Steven Harte, Ronald Kessler, Karestan Koenen, Kerry Ressler, Samuel Mclean, Aoife O'Donovan

Department of Emergency Medicine Faculty Papers

BACKGROUND: Systemic inflammation is hypothesized to contribute to post-traumatic stress disorder (PTSD) vulnerability. Few studies have examined inflammation shortly after trauma as a predictor of later PTSD symptoms. We examined whether inflammation from the emergency department (ED) post-trauma is associated with PTSD symptom severity over the following 6 months.

METHODS: Our sample included 742 AURORA participants, a longitudinal cohort of patients in 29 EDs across the United States after a traumatic stressor, followed up to 6 months. Plasma cytokines were assessed from a study blood draw in the ED: an inflammatory index (standardized sum of generally pro-inflammatory markers interleukin [IL]-6, …

Modalities Of Vision Restoration In Optic Neuropathies And Retinal Disease, Batsheva Rubin, Fabio Lavinsky, Rachel Cain, Ajay E. Kuriyan, Gadi Wollstein, Ronald Zambrano, Joel Schuman

Wills Eye Hospital Papers

Visual impairment affects over 250 million people globally and carries a significant psychosocial and economic burden. In recent years, rapid advancements in biomedical engineering and regenerative medicine have driven the development of innovative therapies aimed at restoring visual function. Here, we first provide an overview of the visual pathway, imaging modalities, and the psychosocial and economic burden of vision loss. Then we review four vision restoration approaches: gene and stem cell therapies, optogenetics, retinal prosthetic devices, and visual pathway electrical stimulation. For each therapeutic approach, the mechanism of action, clinical outcomes, adverse events, and current limitations are discussed. Stem cell …

Values-Based Clinical Ethics: A New Model Of Health And Ethics Consultation For Patients Suffering In Extremis, Adam Trainer

Electronic Theses and Dissertations

This dissertation argues that contemporary clinical ethics is inadequately equipped to support patients suffering in extremis because it relies on an insufficiently discriminating account of health and a constrained model of moral reasoning. Drawing on Bernard Lonergan, it reconceives health as an emergent, multi-layered, heuristic notion shaped by biological, psychological, social, and existential goods. On that basis, it critiques principlism’s global applicability thesis and the undergirding claim that its principles form part of the common morality, arguing that this justificatory structure is philosophically insufficient and practically limited for clinical ethics in cases marked by profound suffering, moral plurality, and normative …

Celiac Plexus Radiosurgery For Retroperitoneal Pain In Advanced Cancer: A Pre-Specified Secondary Analysis Of Health-Related Quality Of Life In A Phase Ii Single-Arm Trial, Aisling Barry, Ronen Fluss, Laura Dawson, David Hausner, Michael Buckstein, Talia Golin, Laurence Freedman, Marcin Miszczyk, Dayssy Diazpardo, Artur Aguiar, Dror Limon, Raphael Pfeffer, Moaz Ben-Ayun, Liat Hammer, Ziv Symon, Ofir Morag, Gali Jacobson, Adam Dicker, Jerzy Wydmanski, Camilla Zimmermann, Yaacov Lawrence

Department of Radiation Oncology Faculty Papers

BACKGROUND: Retroperitoneal pain syndrome seen in pancreatic cancer is a major clinical challenge. Celiac plexus radiosurgery, a new palliative technique for retroperitoneal pain syndrome, decreased pain levels in a phase II study. Here Health-Related Quality of Life (HRQOL) outcomes are reported.

METHODS: Evaluable patients, who were enrolled between January 2018 and December 2021, in an international single-arm Phase II ethics-approved study (NCT03323489), were included. The pre-specified secondary endpoint-change in HRQOL from baseline to 3- and 6-weeks post-treatment, was measured by the Functional Assessment of Cancer Therapy - Hepatobiliary (FACT-Hep) version 4 questionnaire. Mean change was deemed clinically significant (CS) if …

Nudging Implementation Of Low Tidal Volume Ventilation: A Stepped Wedge, Cluster Randomized Trial, Meeta Prasad Kerlin, Michael O. Harhay, Fan Li, Dylan S. Small, Yingying Lu, Wei Wang, Barry D. Fuchs, Mark E. Mikkelsen, Teresa Tran, Aerielle Belk, Jasmine A. Silvestri, Tamar Klaiman, Stefania Scott, Elizabeth Levy, Michael W. Sjoding, Rachel Kohn, Karsten J. Roberts, Rinad S. Beidas, Scott D. Halpern

College of Health Professions Faculty Papers

BACKGROUND: "Nudges" embedded in the electronic health record (EHR) facilitate desired decisions while preserving autonomy and may provide a scalable strategy to overcome the common implementation barrier of lack of knowledge about a best practice. We sought to test whether EHR-based nudges targeting two intensive care unit (ICU) clinician groups would safely increase evidence-based use of low tidal volume ventilation.

METHODS: We performed a stepped-wedge, cluster randomized, hybrid type 3 effectiveness-implementation trial in 12 ICUs from February 2021 to May 2023 to test three nudges targeting clinicians responsible for order entry and respiratory therapists responsible for operationalizing orders and documentation. …

Multi-Site Dms Probing Reveals Higher-Order Structure Of Rna-Protein Complexes In Living Cells, Irfana Saleem, Thomas Miller, Lucas Kearns, Anthony Hoang, Joshua Meehan, Ritwika Bose, David Mitchell, David H Price, Calla M Olson, Chase A Weidmann, Anthony M Mustoe

Faculty, Staff and Students Publications

Identifying tertiary structures and protein binding sites in RNA molecules remains a key challenge in RNA biology. We describe multi-site dimethyl sulfate (DMS)-mutational profiling (MaP) (msDMS-MaP), a strategy that enables simultaneous measurement of RNA secondary, tertiary, and quaternary structures via a single DMS chemical probing experiment. Optimized reverse transcription decodes typically invisible DMS N7-methylguanine (N7-G) modifications via a tautomer-induced mutational signature concurrent with N1 and N3 modifications. We show that N7-G reactivity reports on higher-order RNA structures, revealing key functional motifs such as pseudoknots and protein binding sites. Using msDMS-MaP, we find that E. coli ribosomal RNAs encode numerous independently …

Behind The Screen: The Effect Of Screen Time On The Pediatric Population, Arthi Rameshkumar, Tanvi Shah, Liam Courtney, Talia Hartman, Tanya Kadrmas-Iannuzzi

Rowan-Virtua Research Day

No abstract provided.

Psychiatry Meets Ai: Are Residents Ready?, Jacob De Castro, John Case

Rowan-Virtua Research Day

Artificial intelligence (AI) use is increasing in healthcare, but psychiatry residency training remains unstructured. In a 20-resident pilot survey, AI was frequently used for literature review and clinical support, with limited confidence and institutional guidance. We found most residents desired formal training and would use AI more if institutionally supported. Findings highlight a gap between rapid adoption and structured education.

Protecting The Protectors: Supporting Emergency Department Security Officer Wellness: A Brief Conceptual Review And Research Agenda, James A. Espinosa Md, Paul Sarnese, Alan Lucerna

Rowan-Virtua Research Day

Background: Workplace violence in emergency departments (EDs) has been widely studied, yet the occupational wellness of ED security officers has received comparatively limited focused attention in emergency medicine literature.

Objective: To conceptually examine the role of ED security personnel within the emergency care environment and outline a research agenda addressing their wellness.

Discussion: Security officers frequently respond to behavioral crises, assist with restraint events, and help maintain safety for patients, visitors, and staff. These duties include vigilance between events, sudden physical exertion, and exposure to aggression. ED security work often follows a recognizable rhythm: baseline vigilance, rapid escalation response, physical …

Conceptualizing The Transition From Stable Operations To Turbulent States : Reframing Emergency Department Operations. Learning From Fluid Dynamics And Complexity Science, James Espinosa, David Ho, Alan Lucerna

Rowan-Virtua Research Day

Background: Emergency departments are frequently described using the language of patient flow, implying  smooth and predictable movement of patients through a system versus known obstructions to flow.  Clinicians, however, often observe abrupt shifts in operational stability.

Objective: To explore whether concepts from fluid dynamics and complexity science offer a useful framework for understanding these transitions.

Methods: Conceptual synthesis drawing on emergency medicine operations research, human factors, systems science, and fluid mechanics.

Results (Conceptual): Emergency departments exhibit behaviors analogous to systems approaching turbulence, including sensitivity to perturbation, amplification of delays, and nonlinear responses.

Conclusion: Viewing ED operations through the lens of …

Reframing Emergency Medicine (And Healthcare) Wellness Measures: The Case For Adding Measures Of Physiological Sustainability, Exercise, Restoration, And Meaning, James Espinosa, Alan Lucerna

Rowan-Virtua Research Day

Background

Physician wellness measurement in Emergency Medicine (EM) in particular and in healthcare in general has largely focused on identifying distress states such as emotional exhaustion and depersonalization. Instruments such as the Maslach Burnout Inventory and related derivative surveys have been well-validated and  have played a central role in identifying the scope of burnout across healthcare systems.

Conceptual Framing

While current measures of distress are essential, they may not fully characterize the spectrum of clinician health. In many fields outside healthcare—including occupational health, resilience research, and positive psychology—assessment of well-being includes behaviors and experiences associated with sustained health, such as …

Mental Health Vs Substance Misuse: Predicting Restraint Use In The Emergency Department, Chloe Lafosse Bs, Michael Witt Md, Mph

Rowan-Virtua Research Day

Introduction: Violence in the emergency department affects approximately 30% of hospital staff every 6 months. Presenting complaints may contribute to violence risk, particularly in those with mental health or substance misuse issue where there are heightened risks of cognitive impairment and involuntary holds.

Methods: We conducted a systematic review of literature published between 1957-2025 using multiple databases, identifying studies that observed physical restraint use on adult emergency department patients. All relevant data was recorded and imputed into SPSS for a chi-square test.

Results: Thirteen studies (2019-2025) met inclusion criteria, with sample sizes ranging from 58 to 1,035,522 participants. All studies …

Myxedema Coma: Recognizing A Silent But Potentially Fatal Emergency, Aashna Chaudhry, Robin Lahr, James Espinosa, James Espinosa, Alan Lucerna

Rowan-Virtua Research Day

Myxedema coma is an endocrinologic emergency that requires prompt recognition and treatment. It is described as severe hypothyroidism characterized by life-threatening slowing of metabolic processes, often occurring in the setting of precipitating factors such as trauma, infection, medications, or cold exposure. This case report presents a clinical case in which early suspicion of myxedema coma in an elderly female patient led to prompt treatment and life-saving measures.

Learning From Our Dental Colleagues: A Brief Review Of Counter-Stimulation To Reduce Procedural Pain In Emergency Medicine Mechanisms, Existing Evidence, And A Pragmatic Research Agenda, James Espinosa, Neal Appelstein, Alan Lucerna

Rowan-Virtua Research Day

Counter-stimulation techniques such as tapping, pressure, vibration, and tissue shaking are commonly observed in dental practice during administration of local anesthetic nerve blocks. Although not systematically described in the Emergency Medicine literature, individual clinicians may employ tactile counter-stimulation techniques during needle-based procedures. The practice remains under-theorized and under-studied within the Emergency Medicine literature. This brief review synthesizes mechanistic neurobiology—including segmental gate control theory (Melzack & Wall, 1965), descending inhibitory modulation, and attentional salience models—with evidence from dental and needle-procedure research. We propose a practical taxonomy of counter-stimulation techniques applicable to Emergency Medicine and identify gaps in the current literature. Finally, …

Listening To The System: Reframing Emergency Department Noise: The Case For Noise As A Real-Time Operational Signal In A Complex Adaptive System (Cas), James Espinosa, Alan Lucerna, Henry Schuitema

Rowan-Virtua Research Day

Emergency Department (ED) noise has historically been framed as an occupational and environmental hazard requiring mitigation. And this is still true—but not complete. Early work focused on exposure reduction and spike identification. Subsequent mapping studies demonstrated spatial and temporal differentiation in ED acoustic load. We propose an expanded conceptual model: acoustic variability may function not only as a hazard, but also as a real-time signal of operational turbulence within the ED as a complex adaptive system (CAS). Drawing on human factors, alarm fatigue, resilience engineering, and complexity science, we synthesize existing literature and institutional experience to identify a critical gap—noise …

Reframing The Step Study: The Health Significance Of Emergency Physician Step Count Results In Light Of Contemporary Benchmark Evidence, James A. Espinosa Md, Alan Lucerna

Rowan-Virtua Research Day

Background:

The STEP study (2023), a prospective observational study of emergency medicine residents and attending physicians, demonstrated that clinicians rarely achieve the commonly cited 10,000-step benchmark during clinical shifts. Since that time, large-scale dose–response analyses suggest that substantial health benefits occur at lower step counts (~7,000 steps/day), with diminishing returns beyond this range.

Objective:

To reinterpret the findings of the STEP study in light of contemporary evidence regarding step count and health outcomes.

Methods:

We revisited observational data from the STEP study, which measured step counts during emergency department shifts across three campuses using pedometers. These findings were compared with …

Designing Patient Update Intervals In The Emergency Department: A Queueing-Theory And Operational Science Model Of Patient Updates And Progress Signaling To Improve Patient Experience, James Espinosa, Alan Lucerna, Henry Schuitema

Rowan-Virtua Research Day

Background Patients in the Emergency Department (ED) frequently experience uncertainty while awaiting diagnostic results, reassessment, and disposition. Even when clinical processes are progressing, prolonged informational silence may create the perception of that those processes are not advancing.

Objective To develop a conceptual and operational mathematical, queuing-theory based  model linking bedside communication, conversational time, and informational silence to patient experience.

Methods A back-of-the-envelope operational model was constructed to estimate the time required for bedside update communication during a typical physician shift. A queueing-theory framework was applied to examine how intervals between informational updates influence perceived waiting burden. Concepts from queueing theory …

Delay In Care Due To High Number Of Provider Evaluations In Hip Arthroscopy, Kaylin Knapsack, Wynn Bastianelli, Alexander Cabrera, Stewart Meridian, Sean Mcmillan

Rowan-Virtua Research Day

Background: Diagnosing hip pain in young and middle-aged adults remains challenging due to overlapping intra- and extra-articular pathology. Femoroacetabular impingement syndrome (FAIS) and acetabular labral tears are increasingly recognized as major contributors to pain, mechanical symptoms, and functional limitation. Despite growing awareness of hip preservation surgery, delays in referral to arthroscopy-trained specialists persist and may contribute to disease progression and inferior outcomes.

Purpose: To evaluate delays in surgical management among patients undergoing hip arthroscopy for labral pathology and identify factors contributing to delayed referral to hip preservation specialists.

Methods: A retrospective cohort study was conducted on patients undergoing hip arthroscopy …

De-Epithelialization Versus Pedicle De-Skinning In Reduction Mammoplasty: Comparative Outcomes From The Literature, Samantha Fry, Karina Vizzoni

Rowan-Virtua Research Day

Background- Reduction mammoplasty treats symptomatic macromastia. A key step involves pedicle preparation before breast mound reconstruction. Two main techniques include: De-epithelialization: Removes epidermis, preserves dermis, De-skinning: Excises both epidermal and dermal layers. Evidence comparing surgical outcomes between these techniques is limited.

Hypothesis- De-epithelialization will result in fewer vascular complications but longer operative times than de-skinning; thus, superiority depends on case selection.

Methods- A literature review identified studies on skin removal techniques in breast reduction mammoplasty.

Results- De-skinning was faster than de-epithelialization, though energy-assisted modalities were fastest. Nipple–areola complex (NAC) ischemia and necrosis rates were low across all methods. Superficial de-epithelialization …

Barriers To Palliative Care Access In Rural South Dakota: A Policy And System-Level Analysis, Harshavardhan Kadarkaraisamy

Honors Thesis

Palliative care improves the quality of life for people living with serious illness. It helps by addressing symptoms, improving communication, and providing mental, physical, and spiritual support. However, in South Dakota access to palliative care is limited in rural areas. These challenges include geographic isolation, workforce shortages, healthcare infrastructure, reimbursement, and misunderstandings about palliative care. This thesis examines the key policy barriers that limit access to palliative care in rural South Dakota. This work involves engaging with South Dakota-specific literature, rural health research, policy sources, community education, telehealth expansion, and policy reform. By focusing on the rural context of South …

Falling Star Program: A Visual Cue Intervention To Reduce Falls In Long-Term Care, Maggie Shanahan

Evidence-Based Practice Project Reports

Falls among older adults in skilled nursing and long-term care settings remain a leading cause of injury, functional decline, and increased healthcare utilization, contributing significantly to morbidity and mortality in this population (Centers for Disease Control and Prevention [CDC], 2023; Agency for Healthcare Research and Quality [AHRQ], 2022). The primary purpose of this project aimed to implement and evaluate a structured visual cue–based fall prevention intervention to reduce fall rates among high-risk residents in a long-term care facility in Northwest Indiana. The project included 23 participants aged 65 years and older who were identified as high risk for falls. Using …

Increasing Medication Adherence In Those With Hypertension, Holly Kimiecik

Evidence-Based Practice Project Reports

Hypertension is a chronic condition characterized by persistently elevated blood pressure and remains a significant contributor to morbidity and mortality in the United States. According to the Centers for Disease Control and Prevention (2024), approximately 47.7% of U.S. adults have hypertension, yet only about one in five achieve blood pressure control below 130/80 mm Hg. Medication adherence plays a critical role in managing hypertension and preventing complications. Adults aged 18 years and older prescribed antihypertensive medications from a primary care clinic in Valparaiso, Indiana, participated in this six-week quality improvement intervention. Evidence from a comprehensive literature review supports combining patient …

Cystic Fibrosis Mental Health And Wellness Questionnaire - Factors And Properties Of A Comprehensive Cf-Specific Self-Report Measure, C. Virginia O'Hayer, Patrick J. Smith, Max J. Genecov, Christopher F. Drescher, Heather Bruschwein, Chelsi N. Nurse, Katherine Lawliss, Darcy C. Esiason, Gunnar H. Esiason

Department of Psychiatry and Human Behavior Faculty Papers

BACKGROUND: Existing mental health self-report measures have been criticized for over-simplification, lack of CF-specific focus, susceptibility to measurement reactivity bias, and conflation of symptoms of anxiety and/or depression with CF-related symptoms and/or treatment side effects. The CF Mental Health and Wellness Questionnaire (CFMHWQ) is a 25-item measure assessing CF-specific mental health burden symptoms.

METHODS: To examine common underlying factors contributing to scores on the CFMHWQ, principal component analysis (PCA) was conducted of all 25 items. We conducted cross-validation of CFMHWQ principal components, examining unadjusted correlations between each principal component, demographic characteristics (age and biological sex), negative affect (mean rank global …

The Meaning Of Physical Activity In The Context Of Health Sciences: A Concept Analysis, Martín G. Farinola

International Journal of Physical Activity and Health

Physical activity has been defined in numerous ways. Thus, this study aimed to conduct a concept analysis of the existing physical activity definitions in the health sciences literature to evaluate its conceptual precision and assess the need for a revised or novel concept better suited for this domain. The concept analysis was accomplished using tools derived from philosophical semantics. The analysis identified six definitions that explicitly state what physical activity is with sufficient clarity to allow for conceptual examination. The findings indicated that these definitions frequently merge the concept of physical activity with its contextual attributes. To address these semantic …

Apathy, Effort-Based Decisions And Brain Integrity In Alzheimer’S And Parkinson’S Diseases, Lee-Anne Morris, Hideo Suzuki, Seonjoo Lee, Zekai Jin, Bryan B Chen, Ana Marin, Edward D Huey, Yunglin Gazes, Sarah R Heilbronner, Campbell J Le Heron, Nora Vanegas-Arroyave

Faculty, Staff and Students Publications

Apathy, or loss of motivation, is a prominent syndrome accompanying both Alzheimer's and Parkinson's diseases, in addition to other disorders. One approach to understanding motivational loss is to examine the processes underlying goal-directed behaviour. Weighing up rewarding outcomes against the effort costs required to obtain them (effort-based decision-making) is a core computation when deciding to act for outcomes. Although a growing body of evidence points to disruption of this computation in people with apathy, which underlying decision parameters drive this disruption, their neural associations and whether these would generalize or differ across brain disorders have not been examined. People with …

Diabetic Nephropathy Masquerading As Systemic Disease: The Critical Role Of Renal Biopsy In A Young Uninsured Woman With Nephrotic Syndrome, Yolanda V. Gutierrez, Alexis Vargas Del Toro, Cristina Kochi Yamamoto, Jose Loayza Pintado, Andres Suarez-Parraga

School of Medicine Publications

Nephrotic syndrome can have overlapping features across multiple diseases, making diagnosis difficult without tissue confirmation. We describe a 30-year-old uninsured Hispanic woman with type 1 diabetes, hypertension, and CKD3B who presented with nephrotic syndrome, sepsis, and progressive muscle weakness. Her pleural effusions, periorbital changes, elevated free light chains, and dysphagia raised concern for systemic conditions such as amyloidosis or polymyositis, especially given inconsistent outpatient follow-up. Because her management would differ significantly depending on the underlying cause and due to the high risk of loss to follow-up, a renal biopsy was pursued. Serologic studies were unremarkable, and biopsy ultimately confirmed diabetic …

Automated Analysis Of Radiation Oncology Incident Reports Using Large Language Models, Nathan A. Dobranski

LSU Master's Theses

Patient safety incident reporting in radiation oncology requires expert analysis that is time-intensive and subject to variability. This thesis presents the development and technical validation of a locally deployed large language model (LLM) system for automated incident report analysis across multiple cancer centers. The system was designed for automated summarization and taxonomy assignment of Radiation Oncology Incident Learning System (RO-ILS) reports, operating entirely on local infrastructure to preserve patient privacy. A two-round, multi-rater evaluation methodology was employed, incorporating 600 total expert evaluations from two academic cancer centers. Round 1 established baseline performance using Mistral 7B and Mixtral 8x7B models with …

Syrah: A Pipeline To Maximize Spatial Transcriptomics Data Output, Carolyn Brewster, Frederick G Mann, Blair Benham-Pyle, Alejandro Sánchez Alvarado

Faculty, Staff and Students Publications

Spatial analysis of gene expression patterns has been a key technique for revealing the potential functions of genes. Traditionally, these analyses conducted using in-situ hybridizations and other labor-intensive protocols were constrained to examining only a few candidate genes per sample. However, the advent of spatial transcriptomic techniques like Slide-seqV2 has transformed this field, enabling massively parallel exploration of gene expression patterns within their tissue contexts by pairing spatial locations with RNA sequencing. Despite its potential, Slide-seqV2 datasets often produce fewer usable reads than expected. We have identified that a significant source of errors in the technology stems from the chemical …