79,721 results match your criteria: "Stanford University School of Medicine; vivianne@stanford.edu.[Affiliation]"

Development of a Treatment Decision Aid for Patients with Dysplastic Nevi Who Are Candidates for Re-Excision.

J Am Acad Dermatol

January 2025

Department of Dermatology, Oregon Health & Science University, Portland, Oregon; Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon; Dermatology Section, Portland VA Medical Center, Portland. Electronic address:

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Background: The Advanced Cardiac Therapies Improving Outcomes Network (ACTION) began in 2018 as a collaborative learning health system committed to improving outcomes in pediatric heart failure, including children and adults with congenital heart disease, supported with ventricular assist devices (VADs). This report describes patient and device characteristics, and outcomes through 1-year post-implant.

Methods: The ACTION VAD registry report was created from data submitted to the ACTION learning network from April 2018 to June 2023.

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Tuning local matrix compliance accelerates mesenchymal stem cell chondrogenesis in 3D sliding hydrogels.

Biomaterials

January 2025

Department of Orthopaedic Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA; Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA. Electronic address:

The mechanical properties of the extracellular matrix critically regulate stem cell differentiation in 3D. Alginate hydrogels with tunable bulk stiffness and viscoelasticity can modulate differentiation in 3D through mechanotransduction. Such enhanced differentiation is correlated with changes in the local matrix compliance- the extent of matrix deformation under applied load.

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Comparison of Postoperative Antibiotic Protocols for Pediatric Complicated Appendicitis: A Western Pediatric Surgery Research Consortium Study.

J Pediatr Surg

January 2025

Division of Pediatric Surgery, Rady Children's Hospital San Diego, San Diego, CA, USA; Division of Pediatric Surgery, Dept of General Surgery, UCSD School of Medicine, La Jolla, CA, USA. Electronic address:

Background: There is no consensus on the appropriate duration of postoperative antibiotics for complicated appendicitis in children. Commonly used antibiotic endpoints include normalization of white blood cell count (WBC) or completion of a minimum number of prespecified treatment days. We compared clinical outcomes resulting from varying postoperative antibiotic protocols for complicated appendicitis in children.

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A data-driven latent variable approach to validating the research domain criteria framework.

Nat Commun

January 2025

Department of Psychiatry & Behavioral Sciences, School of Medicine, Stanford University, Stanford, CA, USA.

Despite the widespread use of the Research Domain Criteria (RDoC) framework in psychiatry and neuroscience, recent studies suggest that the RDoC is insufficiently specific or excessively broad relative to the underlying brain circuitry it seeks to elucidate. To address these concerns, we employ a latent variable approach using bifactor analysis. We examine 84 whole-brain task-based fMRI (tfMRI) activation maps from 19 studies with 6192 participants.

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Background: We aimed to analyze the effect of age and weight on 30-day outcomes of single-stage endorectal pull tthrough (ERPT) procedures for Hirschsprung's Disease (HD) using the National Surgical Quality Improvement Program-Pediatric (NSQIP-P) database to identify an optimal time for surgery.

Methods: We queried NSQIP-P for children <2 years with HD who underwent ERPT between 2016-2021 and did not have a preoperative stoma. Patients were stratified by age (<3 months, 3-6 months and >6 months) and weight (<4 kg, 4-8 kg, and >8 kg) at the time of surgery.

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Lipid-lowering therapy (LLT) is the cornerstone for secondary prevention of atherosclerotic cardiovascular disease (ASCVD), yet many patients exhibit low adherence to therapy and fail to achieve low-density lipoprotein cholesterol (LDL-C) goals. This retrospective cohort study used 2 nationally representative administrative closed claims databases (PharMetrics® Plus and Medicare Fee-for-Service [FFS] Research Identifiable Files) to identify commercial (C) and Medicare (M) enrollees with ASCVD between 2014-2019. Patients were stratified by exposure to statin therapy, ezetimibe and proprotein convertase subtilisin/kexin type 9 monoclonal antibodies (PCSK9i mAb) regimens.

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High-impact trials with genetic and -omics information focus on cancer mutations, are industry-funded and less transparent.

J Clin Epidemiol

January 2025

Stanford Prevention Research Center, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA; Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA, USA; Department of Biomedical Data Science, Stanford University School of Medicine, Stanford, CA, USA; Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, CA, USA. Electronic address:

Objective: To assess how genetics and -omics information is used in the most cited recent clinical trials, and to evaluate industry involvement and transparency patterns.

Study Design And Setting: This is a meta-research evaluation using a previously constructed database of the 600 most cited clinical trials published from 2019 to 2022. Trials that utilized genetic or -omics characterization of participants in the trial design, analysis, and results were considered eligible.

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Burden and risk factors of stroke in Vietnam from 1990 to 2021 - a systematic analysis from global burden disease 2021.

J Stroke Cerebrovasc Dis

January 2025

Cardiovascular Research Laboratories, Methodist Hospital, Merrillville, Indiana, USA; School of Medicine, Tan Tao University, Duc Hoa, Long An, Vietnam.

Background: Stroke is a leading cause of death in Vietnam. However, a comprehensive analysis of stroke burden remains limited. This study aims to investigate the burden of stroke and various risk factors in Vietnam from 1990 to 2021.

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Objective: We sought to develop a predictive model to preoperatively identify patients with hepatocellular carcinoma (HCC) at risk of undergoing futile upfront liver resection (LR).

Methods: Patients undergoing curative-intent LR for HCC were identified from a large multi-institutional database. Futile LR was defined by death or disease recurrence within six months postoperatively.

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The 24 Annual Santa Fe Bone Symposium (SFBS) was held in Santa Fe, New Mexico, USA, on August 2-3, 2024. This was a "hybrid" meeting, with in-person and real-time remote participants representing a broad range of geographical locations and medical disciplines. The focus was on new developments in the care of patients with osteoporosis, other metabolic bone diseases, and inherited skeletal disorders.

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Using latent profile analysis to classify US states into typologies of structural racism.

Soc Sci Med

January 2025

University of California - Berkeley, School of Public Health, Division of Epidemiology, United States; University of California - Berkeley, School of Public Health, Division of Biostatistics, United States.

Structural racism is a fundamental cause of racial health inequities; however, it is a complex construct that is difficult to quantitatively analyze due to its multi-dimensionality. We classified fifty US states into three typologies of structural racism using a latent profile analysis. Five domains of structural racism were included in the analysis: Black-White inequities in educational attainment, employment, homeownership, incarceration, and income.

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Background: Understanding the risks and effects of gestational weight gain (GWG) is a prominent area of perinatal research but approaches for quantifying GWG are evolving and remain underdeveloped, especially in clinical settings for underserved demographic subgroups. To fill this gap, we demonstrated and compared six GWG metrics across pre-pregnancy BMI classifications: total GWG, trimester-specific linear rate of GWG, adherence to total and trimester-specific recommendations, area under the curve, and GWG for gestational age z-scores.

Methods: We used clinical data on 44,801 pregnant people from community-based health care organizations with extensive longitudinal measures and substantial representation of understudied subgroups.

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The cerebral blood volume index (CBV index) is a perfusion-based marker of collateral status. Several real-world data analyses from observational stroke cohorts have established relationships between this parameter and a range of favorable and unfavorable stroke outcomes. In this review, an overview is provided of the CBV index, within the context of thrombectomy-treated large vessel and medium vessel occlusion ischemic strokes.

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Cancer immunotherapy-including immune checkpoint inhibition (ICI) and adoptive cell therapy (ACT)-has become a standard, potentially curative treatment for a subset of advanced solid and liquid tumors. However, most patients with cancer do not benefit from the rapidly evolving improvements in the understanding of principal mechanisms determining cancer immune responsiveness (CIR); including patient-specific genetically determined and acquired factors, as well as intrinsic cancer cell biology. Though CIR is multifactorial, fundamental concepts are emerging that should be considered for the design of novel therapeutic strategies and related clinical studies.

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Definition and diagnostic criteria of clinical obesity.

Lancet Diabetes Endocrinol

January 2025

Division of Diabetes & Nutritional Sciences, School of Cardiovascular and Metabolic Medicine & Sciences, King's College London, London, UK; Catholic University of the Sacred Heart, Rome, Italy; University Polyclinic Foundation Agostino Gemelli IRCCS, Rome, Italy.

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Objective: Presenting at academic conferences is an important means of disseminating research, networking, and building a professional reputation, but the quality of presentations at conferences is often suboptimal. This project describes the design, implementation, and evaluation of a presentation coaching program offered by an academic surgical society to presenters at its annual meeting.

Design: Oral presenters were paired with a coach and encouraged to meet independently, yet coaching was unstructured.

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Generation of induced pluripotent stem cell line from a patient with long COVID.

Stem Cell Res

January 2025

Stanford Cardiovascular Institute, Stanford University School of Medicine, CA, USA; Baszucki Family Vascular Surgery Biobank, USA; Division of Vascular Surgery, Department of Surgery, Stanford University School of Medicine, CA, USA. Electronic address:

Long COVID, or post-acute sequelae of SARS-CoV-2 infection, leads to vascular dysfunction, which contributes to the chronic multi-organ damage often seen in affected patients. Long COVID, a global health concern is associated with increased thrombotic risk, also known as COVID-19-associated coagulopathy (CAC). Here, we derived an induced pluripotent stem cell (iPSC) line from peripheral blood mononuclear cells (PBMCs) of a long COVID patient.

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Permeability is a measure of the degree to which cells can transport molecules across biological barriers. Units of permeability are distance per unit time (typically cm/s), where accurate measurements are needed to define drug delivery in homeostasis and to model dysfunction occurring during disease. This perspective offers a set of community-led guidelines to benchmark permeability data across multidisciplinary approaches and different biological contexts.

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Viruses engage in a variety of processes to subvert host defenses and create an environment amenable to replication. Here, using rotavirus as a prototype, we show that calcium conductance out of the endoplasmic reticulum by the virus encoded ion channel, , induces intercellular calcium waves that extend beyond the infected cell and contribute to pathogenesis. Viruses that lack the ability to induce this signaling show diminished viral shedding and attenuated disease in a mouse model of rotavirus diarrhea.

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Concordance of non-invasive plasma cell-free DNA with invasive diagnostics for diagnosis of invasive fungal disease.

Clin Infect Dis

January 2025

Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California, USA.

Background: Mold plasma cell-free DNA (cfDNA) PCR is a promising non-invasive diagnostic modality for early diagnosis of invasive mold disease (IMD) in immunocompromised patients. Although mold cfDNA PCR has been shown to be highly accurate, the value of invasive procedures to collect specimens for conventional fungal diagnostics following plasma cfDNA testing remains unclear.

Methods: This retrospective single-center cohort study included patients with mold plasma cfDNA PCR performed 7 days before or 2 days after invasive specimen collection.

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Originally developed for use in type 2 diabetes mellitus (T2DM), sodium-glucose co-transporter-2 (SGLT2) inhibitors demonstrated diverse cardiovascular- and kidney-protective effects in large outcome trials. Their subsequent approval as a treatment for chronic kidney disease (CKD) marked a pivotal shift in the landscape of CKD management. Further to this, the approval of dapagliflozin and empagliflozin for use in patients with CKD with and without T2DM afforded new treatment opportunities for this population.

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Introduction: Learning health networks (LHNs) improve clinical outcomes by applying core tenets of continuous quality improvements (QI) to reach community-defined outcomes, data-sharing, and empowered interdisciplinary teams including patients and caregivers. LHNs provide an ideal environment for the rapid adoption of evidence-based guidelines and translation of research and best practices at scale. When an LHN is established, it is critical to understand the needs of all stakeholders.

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