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Associations Of The Medicaid Expansion Policy With Racial/Ethnic Disparities In Breast Cancer Screening And Treatment, James Howard Smith Ii

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background and Aim. This dissertation examines Medicaid expansion’s effect on breast cancer (BC) screening and treatment disparities in two Medicaid-expanding states (MES) that passed Medicaid expansion (New Jersey and Vermont) relative to two non-expansion states (NES) (Georgia and Wisconsin). It then compares the association of Medicaid expansion to other states that did not undertake this policy on various subgroups, such as minorities by race and ethnicity, income, and age groups. Black women still bear significant BC disparities due to untimely screenings, treatments, and deaths. Therefore, it is critical to investigate how socioeconomic status influences racial/ethnic disparity gaps, given that BC …

Variation In Blood Culture Testing And Outcomes In Children Hospitalized With Three Common Infections., Smit Shah, Jessica L. Markham, Jennifer Goldman, Matt Hall, Jillian Cotter, Samantha A. House, Matthew J. Molloy, Michelle Polich, Michael J. Steiner, John R. Stephens, Michael J. Tchou, Ronald J. Teufel Ii, Irma Ugalde, Andrew Yu

Research Days

Background: Prior studies of blood culture (BC) testing in uncomplicated community acquired pneumonia (CAP), skin and soft tissue infections (SSTI), and urinary tract infections (UTI) have demonstrated low utility of routine testing given similar rates of pathogen versus contaminant detection and little effect on clinical management. Understanding patterns and outcomes of BC testing can identify opportunities to curb unnecessary testing.

Objectives: The objectives of this study were to: 1) Evaluate BC testing trends over time for children hospitalized for CAP, SSTI, and UTI; and 2) describe differences in clinical outcomes between hospital groups with low, moderate, or high testing rates. …

Reducing Vancomycin Use In The Cicu, Karoline Krzywda, Ali Taber, Lauren Johnson

Research Days

Background/Aim Statement: In the CICU empiric vancomycin is frequently prescribed. This practice occurs without broad knowledge of the actual rates of methicillin resistant staph aureus (MRSA) and methicillin resistant staph epidermidis (MRSE) infections. Given the potential for harmful side effects of vancomycin as well as concern for growing antibiotic resistance, we sought to better characterize local unit prescribing practices and MRSA/MRSE infection rates to guide our QI project with an aim of reducing vancomycin use in the CICU.

Methods (include PDSA cycles): Patient data from January 2021 to January 2023 was analyzed. The number of monthly days spent on vancomycin …

A Risk Score To Predict Recurrent High Intensity Inpatient Resource Utilization For Children With Medical Complexity., Charles Maloy, Matthew Hall, Jessica L. Bettenhausen, Yui-Yee Chan, Leah Jones, Kathryn Kyler, Laura Plencner Md, Jessica Markham, Jacqueline M. Walker, Smit Shah, Sîan Best, Jonathan Ermer, Shelby Chesbro, Maria Newmaster, Henry T. Puls

Research Days

Background: Children with medical complexity (CMC) use a greater amount of inpatient resources and stand to benefit from unique care models and coordination. However, hospital resources can be limited, and a better understanding of which CMC are high resource users could improve hospital and staff planning.

Objectives/Goal: To develop a risk score predictive of recurrent high intensity inpatient utilization among CMC.

Methods/Design: We conducted a retrospective cohort study of children <18 years old with ≥3 complex chronic conditions (CCC) discharged from one of 48 children’s hospitals in the Pediatric Health Information System during 2021 and 2022. To reflect CMC typically cared for by a general medical service, children with cardiac procedures, dialysis, oncology, or transplant CCCs, and index hospitalization mortality were excluded. We used multivariable logistic regression to determine factors present on the index hospitalization associated with ≥5 hospitalizations or ≥3 hospitalizations with one lasting ≥25 days within any 365-day period (high inpatient utilization) in 2021-2023. We developed risk scoring system using model coefficients and defined the optimal risk score cutoff to maximize sensitivity and specificity. We then applied the risk score cutoff to children discharged to determine (a) ratio of predicted:actual CMC with recurrent high resource use and (b) the total predicted daily volume on 50th, 75th, and 90th percentile days for each hospital.

Results: Of 44,432 included children, 9,596 (21.6%) had high inpatient utilization (Table). Children under 1 year of age had the highest odds of high inpatient utilization (OR 2.26 [95% CI: …

Failure To Launch: Pediatric Colorectal Surgery Center Utilization By Patients Over 18 Years Of Age, Vatche Melkonian, Andres Gonzalez Salazar, Cory Nonnemacher, Seth Saylors, Margaret Martin-Mclain, Iris Lim-Beutel, Rebecca Rentea

Research Days

Background: As patients with childhood colorectal diseases transition into adulthood, many continue to seek care at pediatric colorectal centers rather than transitioning to adult hospital systems. This preference often stems from a sense of comfort and familiarity with their pediatric care teams. Additionally, patients often perceive inadequacies in adult healthcare systems in managing their specific conditions. As these numbers of patients continue to grow, pediatric colorectal centers may face increasing demands on their resources, potentially diverting attention away from pediatric patients.

Objectives/Goal: The objective of this study was to assess the utilization of our pediatric colorectal center by patients aged …

Patterns And Growth Of A Dedicated Pediatric Coagulation Consult Service In A Freestanding Children's Hospital, Nicole Demarco, Shannon Carpenter, Brian Lee

Research Days

Background: Hospital-acquired thrombosis remains a significant concern in pediatric care, contributing to morbidity and extended hospital stays. At Children’s Mercy, a dedicated inpatient coagulation consultation service has existed for many years. Efforts have been made to implement prophylactic measures aimed at reducing the incidence of hospital-acquired thrombosis. With the recent COVID pandemic we saw an influx in prophylactic anticoagulation due to recommended guidelines.

Objectives: To characterize the impact increased efforts in thromboprophylaxis during and after the COVID-19 pandemic on care delivery and the development of thrombosis among pediatric hospitalized patients.

Methods: This retrospective review included all pediatric inpatients with a …

Multi-Omic Analysis Of Kmt2a-Rearranged Pediatric Acute Myeloid Leukemia Reveals Novel Pathways Of Interest, Trenton Edwards, Irina Pushel, Thomas Gremminger, Lisa Lansdon, Byunggil Yoo, Michaella Rekowski, Michael Washburn, Midhat Farooqi

Research Days

Objectives/Goals

Acute Myeloid Leukemia (AML) is the second most common leukemia among pediatric populations. Approximately 15% of pediatric AML cases have KMT2A gene rearrangements (KMT2A-r), which carry a worse prognosis. Our goal is to better characterize the biologic landscape of KMT2A-r pediatric AML. We hypothesize that a multi-omic approach will reveal mechanisms underlying the aggressive nature of KMT2A-r AML.

Methods/Study Population

This study makes use of deidentified peripheral blood and/or bone marrow samples banked in the Children’s Mercy Tumor Bank Biorepository. For this study, we used samples at diagnosis and remission from four KMT2A-r pediatric AML …

No Suspicion For Nocarh: A Cautionary Tale Of Anchoring Bias, Nicole Demarco, Shannon Haines, Julia Allyson Hays, Bonnie Sullivan, Michael Price, Kimberly A. Horii

Research Days

Neonatal onset of cytopenia autoinflammation rash and hemophagocytic lymphohistiocytosis syndrome (NOCARH), a subset of hemophagocytic lymphohistiocytosis (HLH), is a rare and life-threatening condition characterized by uncontrolled immune response. It presents a diagnostic challenge in neonates due to the overlap of clinical features with other conditions, particularly congenital infections.

Nrp And Pals In Icu Code Events At A Quaternary Care Pediatric Hospital: A ‘Compressed’ Analysis, Deepa Kumar, Mitch Kinkor, Stephen Pfeiffer, Allison Taber, Janelle R. Noel-Macdonnell Phd, Jessica Brunkhorst, Danielle Reed

Research Days

This is a retrospective observational study comparing code events in children less than 18 months of age who were resuscitated in the NICU, PICU, and CICU using neonatal resuscitation program (NRP) and pediatric advance life support (PALS).

Incorporating Latent Survival Trajectories And Covariate Heterogeneity In Time-To-Event Data Analysis: A Joint Mixture Model Approach, Fu-Wen Liang, Wenyaw Chan, Michael D Swartz, Bouthaina S Dabaja

Faculty, Staff and Student Publications

Background: Finite mixture models have been recently applied in time-to-event data to identify subgroups with distinct hazard functions, yet they often assume differing covariate effects on failure times across latent classes but homogeneous covariate distributions. This study aimed to develop a method for analyzing time-to-event data while accounting for unobserved heterogeneity within a mixture modeling framework.

Methods: A joint model was developed to incorporate latent survival trajectories and observed information for the joint analysis of time-to-event outcomes, correlated discrete and continuous covariates, and a latent class variable. It assumed covariate effects on survival times and covariate distributions vary across latent …

Theta Oscillons In Behaving Rats, M S Zobaer, Nastaran Lotfi, Carli M Domenico, Clarissa Hoffman, Luca Perotti, Daoyun Ji, Yuri Dabaghian

Faculty, Staff and Students Publications

Recently discovered constituents of the brain waves—the oscillons—provide a high-resolution representation of the extracellular field dynamics. Here, we study the most robust, highest-amplitude oscillons recorded in actively behaving male rats, which underlie the traditional θ-waves. The resemblances between θ-oscillons and the conventional θ-waves are manifested primarily at the ballpark level—mean frequencies, mean amplitudes, and bandwidths. In addition, both hippocampal and cortical oscillons exhibit a number of intricate, behavior-attuned, transient properties that suggest a new vantage point for understanding the θ-rhythms’ structure, origins and functions. In particular, we demonstrate that oscillons are frequency-modulated waves, with speed-controlled …

The Impact Of Race-Corrected Spirometry Results On Eligibility Into An Asthma Clinical Trial, Carina H. Perdew, Bridgette L. Jones, Wumi V. Akinjole

Research Days

BACKGROUND: Spirometry is a widely used pulmonary function test that assesses lung function by examining airflow and capacity. Spirometry measurements assist in the diagnosis, severity classification, and management of asthma, and can affect one’s eligibility into various events (e.g., clinical trials, high-risk jobs, sports). Reference equations are used to establish predicted values to account for biological variables such as age, sex, and height; however past clinical guidelines recommended utilizing race-correction. The incorporation of race may negatively impact people of color due to misrepresentation of one's lung function, consequently impacting future medical management. OBJECTIVES: To characterize differences in spirometry values across …

Emergency Department Utilization For Educational Prioritization For Children By Levels Of Community Advantage, Katherine Randolph, Chris Kennedy, Jennifer Watts, Matt Hall

Research Days

Background: Children with higher social deprivation have higher emergency department (ED) utilization. The Childhood Opportunity Index (COI) is a validated multidimensional measure of community advantage which includes access to resources and healthy neighborhood factors. Educational priorities are frequently not tied to risk data.

Objective: This study aimed to identify zip codes with higher-than-expected ED utilization by diagnoses to prioritize the development of educational initiatives for hospitals, emergency medical services, pediatrician offices, and the community.

Methods: We performed a population-based study of children aged 0-17 years who presented to an ED in Kansas or Missouri in 2023 using census data via …

Variables Affecting Neurodevelopmental Outcome In Infants With Critical Congenital Heart Disease, Elizabeth Loughman, Julie Weiner Do, Marcie Files Md

Research Days

Background: The mortality of cardiac conditions in infancy is improving with advances in surgical planning and medical management. Neurologic morbidity remains significant. Clinically correlating an infant with their neurologic exam, MRI/EEG, and subsequent developmental testing remains a challenge. Counseling regarding neurologic outcomes after cardiac intervention is difficult due to the wide range of findings that can sometimes be clinically irrelevant.

Purpose: The goal of this study is to identify factors associated with poor neurodevelopmental outcomes in infants with critical congenital heart defects (CCHD) as assessed by the Bayley Scales of Infant and Toddler Development Edition IV (Bayley).

Methods: This is …

Implementation Of A Weaning Protocol For Inhaled Nitric Oxide In A Level Iv Neonatal Intensive Care Unit, Elizabeth Loughman, Julie Weiner Do, Maryam El Tawil, Chris Nitkin Md

Research Days

Background: Decrease time to begin iNO weaning from 13 hours to 9.75 hours by 31 December 2024 in patients with persistent pulmonary hypertension of the newborn (PPHN).

Methods: Countermeasures include (1) provider education at each disciplinary level, (2) badge reminder cards and laminated copies of the protocol available at the bedside, (3) order set modifications, (4) abnormality tracking at huddles. Data collection will be automated through weekly Business Objects report. The main outcome measure will be time to first wean of iNO after meeting protocol criteria. Feedback regarding the ease of weaning will be generated via Gemba Rounds.

Results: These …

Effect Of Social Determinants Of Health On Clinic Visit Attendance In Patients With Hemophilia, Shailly Gaur Md, Brian Lee Phd, Mph, James Anderst Md, Msci, Katie Foote Lscsw, Lcsw, Osw-C, Andrea Bradley-Ewing Mpa, Ma, Shannon Carpenter Md

Research Days

Background

Social determinants of health (SDOH) create barriers to seeking care regularly, especially for patients with chronic disease. Patients with moderate-severe hemophilia A and B (factor 8 and 9 deficiencies respectively) have a life-long higher risk of bleeding and require chronic therapies. Specialized care is offered through hemophilia treatment centers (HTCs); however, these can be difficult to access for some individuals. Previous SDOH research in this patient population has been limited; therefore, it can be difficult to identify the barriers to care that exist. There is a need to examine SDOH more thoroughly to create patient-directed interventions to improve access …

Intraspinal Anomalies In Presumed Ais Does Not Increase The Risk Of Intraoperative Neuromonitoring Changes During Posterior Spinal Fusion, Connor Mathes, Bill Woodhams, Aaron Shaw, John Anderson, Michael Benvenuti, Richard Schwend

Research Days

This study aims to identify the association between intraoperative neuromonitoring changes during posterior spinal fusion surgery among patients with adolescent idiopathic scoliosis and those found to have intraspinal anomalies on standard preoperative imaging.

Implementation Of An Enhanced Recovery After Surgery Pathway In Adolescent Patients Undergoing Laparoscopic Evaluation Of Endometriosis, Lauren Roth Md, Madeline Ross Md, Todd Glenski Md, Emily Weisberg Md, Ashli Lawson

Research Days

This study evaluates the implementation of an Enhanced Recovery After Surgery (ERAS) pathway for adolescent patients undergoing diagnostic laparoscopy for endometriosis at a tertiary children's hospital. The retrospective reviewed included 53 patients (20 pre-ERAS, 33 post-ERAS) aged 12-20 years old, comparing preoperative compliance, intraoperative adherence, and postoperative outcomes. Findings showed 81% compliance with preoperative medication, 76% received appropriate preoperative medications, and 39% had recommended carbohydrate loading. Intraoperative compliance was 87%, with 61% adherence to postoperative medications. Post-anesthesia care unit (PACU) stay time increased (44 vs 53 minutes, p=0.21), but pain scores, postoperative prescriptions, and hospital readmissions remained unchanged. This study …

Spinal Deformity Characteristics Associated With Intraspinal Anomalies In A Population Of Presumed Ais, Connor Mathes, Aaron Shaw, Bill Woodhams, John Anderson, Michael Benvenuti, Richard Schwend

Research Days

This study aims to identify an association between pre-operative radiographic criterion and the presence of an underlying intraspinal anomaly in patients presenting with presumed adolescent idiopathic scoliosis undergoing posterior spinal fusion.

Adherence To Oral Iron In Adolescent Females With Iron Deficiency Secondary To Heavy Menstrual Bleeding, Kennedy Sheedy, Lauren Amos Md, Ms

Research Days

Iron deficiency is an important, but often minimized issue among adolescent females. While treat with oral iron is generally first-line treatment, IV iron has been shown to be safe and effective. Our study looks at adherence and barriers to oral iron treatment and assesses current use of IV iron for iron deficiency at Children's Mercy, in hopes of helping move towards utilizing the most beneficial treatment for each individual patient.

Integrating Artificial Intelligence In Orthopedic Care: Advancements In Bone Care And Future Directions, Rahul Kumar, Kyle Sporn, Joshua Ong, Ethan Waisberg, Phani Paladugu, Swapna Vaja, Tamer Hage, Tejas C. Sekhar, Amar S. Vadhera, Alex Ngo, Nasif Zaman, Alireza Tavakkoli, Mouayad Masalkhi

SKMC Student Presentations and Publications

Artificial intelligence (AI) is revolutionizing the field of orthopedic bioengineering by increasing diagnostic accuracy and surgical precision and improving patient outcomes. This review highlights using AI for orthopedics in preoperative planning, intraoperative robotics, smart implants, and bone regeneration. AI-powered imaging, automated 3D anatomical modeling, and robotic-assisted surgery have dramatically changed orthopedic practices. AI has improved surgical planning by enhancing complex image interpretation and providing augmented reality guidance to create highly accurate surgical strategies. Intraoperatively, robotic-assisted surgeries enhance accuracy and reduce human error while minimizing invasiveness. AI-powered smart implant sensors allow for in vivo monitoring, early complication detection, and individualized rehabilitation. …

Probing Binding And Allosteric Mechanisms Of The Kras Interactions With Monobodies And Affimer Proteins : Ensemble-Based Mutational Profiling And Thermodynamic Analysis Of Binding Energetics And Allostery Reveal Diversity Of Functional Hotspots And Cryptic Pockets Linked By Conserved Communication Network, Mohammed Alshahrani, Vedant Parikh, Brandon Foley, Guang Hu, Gennady M. Verkhivker

Mathematics, Physics, and Computer Science Faculty Articles and Research

KRAS, a historically "undruggable" oncogenic driver, has eluded targeted therapies due to its lack of accessible binding pockets in its active state. This study investigates the conformational dynamics, binding mechanisms, and allosteric communication networks of KRAS in complexes with monobodies (12D1, 12D5) and affimer proteins (K6, K3, K69) to characterize the binding and allosteric mechanisms and hotspots of KRAS binding. Through molecular dynamics simulations, mutational scanning, binding free energy analysis and network-based analyses, we identified conserved allosteric hotspots that serve as critical nodes for long-range communication in KRAS. Key residues in β-strand 4 (F78, L80, F82), α-helix 3 (I93, H95, …

Use Of Margins Around Small Brain Metastasis Improves Specificity Of Evaluation Methods For Stereotactic Radiosurgery Treatment Plans, Purity Kemunto Bundi

LSU Master's Theses

Purpose: To reduce the high false positive rates (FPRs ≥ 46%) from the evaluation of Gamma Knife stereotactic radiosurgery (SRS) treatment plans for small brain metastases. Specifically, we modified two evaluation indices, Treated Volume Ratio (TVR) and Gradient Index (GI), which exhibited FPRs exceeding 84%. A false positive result incorrectly indicates that an acceptable plan, as determined by a medical physicist and a radiation oncologist, is inacceptable.

Methods: This study utilized training and validation datasets from Gamma Knife treatment plans from The University of Texas MD Anderson Cancer Center (MDACC) and Mary Bird Perkins Cancer Center (MBPCC). Data included doses, …

Decreasing Time To Narcotic Pain Medication In Patients With Sickle Cell Disease Presenting With Acute Pain Crises In A Pediatric Emergency Department: A Quality Improvement Initiative., Allison Adam, Leslie Hueschen, Lina Patel, Christopher Kaberline, Ibad Siddiqi

Research Days

Background: Guidelines published by the National Heart, Lung and Blood Institute recommend that patients with sickle cell disease who present in acute pain crisis receive narcotic medication < 60 minutes from arrival. Multi-center studies indicate approximately 50% of institutions are adherent to this level 1a recommendation. From October 2022-October 2023, our institutional median time to narcotic was 61 minutes.

Objective: Our aim was to decrease the time to narcotic administration by 10% (61 min to 55 min) in patients with Sickle Cell Disease presenting to the emergency department for acute pain crisis while simultaneously decreasing disparities in our patient population by Oct 2024. Additionally, we sought to increase the percentage of patients within this population to receive their first narcotic in 60 min from 49% to 70%, by Oct 2024.

Methods: We …

A Single Center Qualitative Study To Improve Coordination Of Follow-Up Care For Patients Diagnosed With Abusive Head Trauma, Ruairi Smith-Dewey, Elise Wright, Daniella Donofrio, Hannah Goebel, Sara Kilbride

Research Days

Background/Project Intent: Review of cases identified 16 possible follow-up needs. A single patient had a maximum of 12 potential needs. Needs not being addressed included written documentation for need of follow-up without subsequent referral placed/appointment scheduled or need not addressed at all. The goal of this project was to have all follow-up needs addressed for at least 50% of children diagnosed with AHT by January 2025.

Methods: All children admitted to CMH from January 2024-December 2024 and diagnosed with AHT by the Safety, Care & Nurturing (SCAN) team were included. Interventions were designed and implemented by a multidisciplinary team to …

Ecmo Without Compressions Versus Ecpr For Lcos Following Cardiac Surgery, Amjad Halloum, Apurva Panchal, Sarah Tabbutt, Martina Steurer, Mousumi Banerjee, John Charpie, Javi Lasa, Amy Mccammond, Katie Moynihan, Nancy Ghanayem, Tia Raymond

Research Days

A retrospective study looking into ECMO vs eCPR outcomes in the CICU. By refining the approach to postoperative ECMO initiation, this study aims to contribute valuable insights that could improve survival and reduce complications in pediatric cardiac surgery patients.

Bisphosphonate Treatment In Pediatric Patients With Rare Ovarian Malignancy And Hypercalcemia: A Case Series, Samhita Bhattarai, Seth Lamb, Jennifer W. Boyd

Research Days

Objectives

To describe the presentation, management, and outcomes of severe hypercalcemia in two adolescent females secondary to ovarian malignancy.

Methods

The case series includes two adolescent female patients, aged 11 and 16, diagnosed with rare ovarian malignancies and associated hypercalcemia. Both patients presented with abdominal pain, nausea and constipation. The 11-year-old received zoledronic acid while the 16-year-old received pamidronate. Serum calcium levels, symptoms and medication side effects were monitored before and after bisphosphonate therapy.

Results

Both girls presented with severe hypercalcemia. Patient 1 was an 11-year old girl who presented with serum calcium of 15.0 mg/dL. She began hyperhydration with …

Temperature Monitoring In The Cardiac Operating Room, Abby Pint, Clint Humpherys, Dave Stubler, Nathaniel Lata

Research Days

Background: The goal of this project is to improve the accuracy of temperature readings in the cardiac operating room and, in turn, improve patient safety.

Methods: The project obtained nasopharyngeal, tympanic, and bladder/rectal temperature measurements from twenty CPB cases. Measurements were obtained at six critical points: time of incision, initiation of CPB, aortic cross clamping, removal of aortic cross clamping, CPB termination, sternal closure. Data was analyzed to determine discrepancies among methods of measuring temperature for each type of probe utilized. Plan: Tympanic probes are unreliable and provide lower temperature measurements when compared to other probes Do: Temperatures recorded from …

Academic Half Days Dedicated To Phone Triage Improves Resident Confidence To Independently Triage Calls, Sarah Gwazdacz, Kelsey Gavin, Cati Kral

Research Days

We aim to improve Children’s Mercy residents’ confidence and competence to independently triage admission phone calls, and to help residents develop a system to obtain information during a transport phone call through dedicated academic half days.

A needs assessment at the beginning of the 2024-25 academic year was completed to assess the need for triage education. Then, curriculum design, goals & objectives, educational strategies, and implementation of the half day were discussed with leaders in medical education, admission hub physicians, and hospital medicine. Pediatric residents of all training levels were divided into 5 cohorts of 10-15 participants, which rotated through …

Favorability Of Progesterone With Estrogen Among Physicians In Transgender Adolescents: A Survey, Samhita Bhattarai, Michelle Knoll

Research Days

To evaluate the current perspective and clinical practices of physicians regarding the use of synthetic progestins as an adjunct to estrogen therapy in transfeminine adolescents. The survey focuses on perceived benefits, risks and overall efficacy in gender affirming hormone therapy.