All Clinical Trials

The purpose of this study is to evaluate the efficacy of Losartan use post-operatively for reducing or preventing the development of arthrofibrosis and the associated adverse impacts on clinical outcomes. Read Less

The goal of this interventional study is to learn about the outcomes between two options for the management of malignant gastric outlet obstruction. Read Less

This study will assess the efficacy of receiving emergency care at home versus in the brick-and-mortar emergency department. Read Less

This single-center, 400-patient, randomized controlled trial assesses the impact of a patient- and provider-facing EPIC Best Practice Advisory (BPA; alert-based computerized decision support tool) to increase guideline-directed utilization of statin and statin-alternative oral LDL-C lowering therapies in patients with PAD who are not being prescribed LDL-C-lowering therapy. Read Less

Background: The VA and DoD estimate that 3.5 million Veterans and Service Members were exposed to open burn pits used for waste disposal during military deployments to countries such as Kuwait, Afghanistan, and Iraq since 1990. Since the lasting adverse effects of this exposure on health are unknown, the VA Airborne Hazards and Open Burn Pit Registry (AHOBPR) was created. More than 209,000 participants to date have answered the registry questionnaire about the extent of exposure to burn pits and other airborne hazards. The questions attempted to quantify the duration of exposure, the severity of acute health effects, and the relative timing of onset or worsening of chronic respiratory, cardiovascular, neurological, and other illnesses. However, the AHOBPR interview lacks specific inquiry about mental health and biomarkers. The proposed study will recruit AHOBPR participants and non-participant for a follow-up enhanced evaluation of their health in a translational research study to better characterize their psychological, physical health profile, and potentially harmful epigenetic and biochemical exposure-related alterations. Hypothesis: The investigators hypothesize that 1) the severity of individual exposure to burn pits will be positively correlated with levels of persistent organic pollutants in blood and metals in urine and specific epigenetic alterations in DNA methylation; and 2) levels of toxic chemicals and alterations in the methylation of specific genes will be positively correlated with chronic problems involving the cardiovascular, respiratory, neuropsychiatric and other systems. Specific Aims: (1) Describe and quantify relationships of the intensity and duration of exposure with persistent organic chemicals/metals in the registry participants and ascertain their relationships with health outcomes linked to burn pit exposure. (2) Discover and validate DNA methylation marks that best distinguish between individuals exposed to burn pits and those not; then describe and quantify the relationships between DNA methylation, intensity and duration of exposure, and health outcomes. Completion of these aims will allow quantitation of the relationships between toxic chemicals, DNA methylation, and individual health problems. Study Design: A clinical study will be conducted at the Central Arkansas Veterans Healthcare System and the University of Arkansas for Medical Sciences. The AHOBPR registry and non-specific recruitment will be used to enroll OBP exposed (N=220) and age and gender-matched unexposed (N=110) veterans. The unexposed veterans will be given the same questions as in the AHOBPR to determine their open burn pit exposure status with a confirmation of no exposure. A single study visit per participant will strengthen the registry by validating its contents using the electronic patient record and adding new study data on physical and mental function, including effects of epigenetic and toxicant measures obtained from blood and urine samples. Linear and logistic regression modeling will be used to determine the relationships described by the study aims while controlling for confounding variables and false discovery rates. Long-term and Short-term Impact on Patient Populations: The immediate goal of the study is to measure exposure-related differences in levels of potentially toxic chemicals present in blood and urine and differences in DNA methylation. The study will then determine the relationships between exposure, the biochemical and molecular measures, and the presence of health problems. The value of this information is high since the effects of burn pit exposure are largely unknown but potentially serious. The longer-term goal for this line of investigation is to enable personalized and tailored health management for exposed individuals. The investigators believe that the biochemical and molecular measures may become novel biomarkers that enable the prediction of risk for disease and adverse disease outcomes such that preventative measures can be employed. Furthermore, the results will be highly relevant to other occupations in which exposure to airborne pollutants is high. Read Less

The goal of this observational study is to learn about the mechanism of action of ozanimod in patients with ulcerative colitis (UC). The main questions it aims to answer are: 1. Prospectively assess the effects of ozanimod on the cellular composition of intestinal lamina propria and blood by deep immunophenotyping (CyTOF) of immune cell subsets prior and after the drug's administration. 2. Determine whether changes in cell subsets observed via mass cytometry correlate with with clinical or histologic parameters of disease activity. Colonic biopsies and peripheral blood samples will be collected from patients with UC before and after the onset of ozanimod. Researchers will compare intestinal and peripheral leukocytes before and after the drug's administration. Read Less

The RAINBOW study is a fully remote study focused on understanding and treating behavior problems in young children with tuberous sclerosis complex (TSC). The first goal is to enroll a group of 100 children with TSC between the ages of 3 and 6 years old, with and without problem behaviors, to learn about how best to measure behavioral challenges in TSC and how common these behaviors are during this age period. All families will get feedback from the clinical assessments collected. Eligible children who are experiencing behavior problems will be invited to enroll in a pilot clinical trial of internet-based Parent-Child Interaction Therapy (or PCIT), which is meant to help parents better manage their children's challenging behaviors. Adaptations to PCIT are incorporated to suit the needs of TSC children and families. Some participants will be randomly selected to receive the intervention immediately and others after a 6-month delay, but all families will receive the same intervention. Intervention sessions occur on a weekly basis for up to 20 weeks. Follow-up assessments, which include play interactions, parent interviews, and questionnaires occur about 3 and 6 months after the first visit. The delayed treatment group has an extra brief assessment about 12 months from the initial visit. This study will increase what is known about the types of behavior problems that come up during preschool age in TSC and how best to help children and families with TSC who are experiencing these problems. Read Less

The investigators propose a cluster-randomized clinical trial to determine whether an intensive, targeted azithromycin distribution strategy is effective for elimination of trachoma at the kebele level compared to the World Health Organization (WHO) recommendation of annual azithromycin distribution. Read Less

This five-year study will evaluate the effectiveness of the administration of buprenorphine bridge treatment (BBT) to probationers and parolees compared to treatment as usual (TAU), which consists of referral to a community buprenorphine treatment program. Read Less

This is a two-arm open-label study to evaluate the clinical and immunogenetic responses of patients with plaque or guttate psoriasis to treatment with guselkumab. Read Less

Patients with restrictive-type anorexia nervosa who are admitted to the hospital for feeding often urinate excessive amounts. Others have changes in the way that they handle acid and base. These issues prolong hospitalizations. Current data suggest that one hormone--named secretin--may control both urine output and how the body handles acid and base. This study will evaluate whether secretin levels are different in anorexic patients who urinate an excessive amount compared to those who urinate normal amounts. For this study, patients will have one extra blood draw before and after one meal during their hospitalization. The blood draw before the meal coincides with a standard of care blood draw. Also after the meal, subjects will be asked to provide one extra urine sample. Information from subject's medical records will also be used. Read Less

Art therapy is used across the Military Health System for treatment of posttraumatic symptoms, but there is limited research on how art therapy is able to restore emotional expression and regulation in service members. This research hopes to learn about the effects of art therapy on emotional expression and regulation in service members as well as the neurological systems at work. If a participant chooses to be in this study, he or she will attend ten sessions over a period of twelve weeks. The first session will be an interview and self-assessment questionnaires to collect information on a variety of symptoms, experiences, and personality traits, and an MRI scan. During the MRI scan, participants will be asked to perform a task where they will be shown a series of neutral and negative images. The middle eight sessions will be one-hour art therapy sessions with a certified art therapist. The last session will consist of the same self-assessment questionnaires and another MRI scan. Read Less