412 results match your criteria: "University of California-Los Angeles David Geffen School of Medicine[Affiliation]"

Acute intermittent porphyria (AIP) is a rare inherited metabolic disorder caused by decreased activity of the enzyme porphobilinogen deaminase in the heme synthesis pathway. This leads to the accumulation of toxic porphyrin precursors, such as porphobilinogen and δ-aminolevulinic acid. Clinical manifestations typically include episodic bouts of severe neurovisceral pain and autonomic dysfunction.

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Background: Acute Hepatic Porphyria is a group of four rare genetic but treatable diseases that often go undiagnosed due to its non-specific symptoms, under-recognition of the condition by clinicians, and the lack of access to specialists and appropriate testing. This case-control study investigates the phenotypic and demographic patterns in Acute Hepatic Porphyria (AHP) patients at a tertiary care center (University of California Los Angeles) to update recommendations for recognition and diagnosis of this disease in our community.

Method: A retrospective chart analysis was conducted on 45 patients who were evaluated for AHP, Electronic Medical Record (EMR) data was collected and analyzed to investigate clinical differences and correlations.

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A Promising Pathway Toward Mitigation and Eradication of Coronary Artery Disease.

Cardiol Res

December 2024

Cardiovascular Research Foundation of Southern California, Beverly Hills, CA, USA.

Cardiovascular disease remains the leading cause of death in the United States and globally. Significant advances have been made throughout the history of cardiology and the treatment of this disease; however, these efforts have not halted the alarming statistics. Emerging approaches, such as artificial intelligence applied to cardiac imaging, genetic testing, and genetic silencing, may offer essential additional steps in treating the disease.

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Accurate Intramyocardial Hemorrhage Assessment with Fast, Free-running, Cardiac Quantitative Susceptibility Mapping.

Radiol Cardiothorac Imaging

December 2024

From the Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, 116 N Robertson Blvd, Pacific Theatres Bldg, Ste 400, Los Angeles, CA 90048 (Y.H., L.T.H., H.L.L., D.L., H. Han, A.G.C., H.J.Y.); Krannert Cardiovascular Research Center, Indiana University School of Medicine, Indianapolis, Ind (Y.H., X.G., X.Z., G.Y., G.A., S.F.C., K.P.V., B.S., D.P.S., K.Y., R.D.); Departments of Bioengineering (Y.H., X.Z., A.G.C.) and Statistics (H. Ho), University of California Los Angeles, Los Angeles, Calif; Academia Sinica, Institute of Statistical Science, Nankang, Taipei, Taiwan (H. Ho); Department of Surgery, Division of Neurosurgery, Mackay Memorial Hospital, Taipei, Taiwan (L.T.H.); Department of Medical Imaging, National Cheng Kung University Hospital, Tainan, Taiwan (H.Y.L.); Siemens Medical Solutions USA, Malvern, Pa (X.B., F.H.); and Department of Radiological Sciences, University of California Los Angeles David Geffen School of Medicine, Los Angeles, Calif (A.G.C.).

Purpose To evaluate the performance of a high-dynamic-range quantitative susceptibility mapping (HDR-QSM) cardiac MRI technique to detect intramyocardial hemorrhage (IMH) and quantify iron content using phantom and canine models. Materials and Methods A free-running whole-heart HDR-QSM technique for IMH assessment was developed and evaluated in calibrated iron phantoms and 14 IMH female canine models. IMH detection and iron content quantification performance of this technique was compared with the conventional iron imaging approaches, R2*(1/T2*) maps, using measurements from ex vivo imaging as the reference standard.

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Background: Addressing equity in healthcare is necessary to improve population health outcomes. In doing so, a requisite level of foundational resources, organization, and processes are needed. Although increasing attention is being devoted to addressing health inequities, the current landscape supporting these efforts remains unknown.

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Vasculitis can be challenging to diagnose, especially when vessels of multiple sizes are affected and manifestations do not classically fit into defined rheumatic disease entities. We present the case of a 58-year-old Caucasian woman who presented with headache and altered mental status, with subsequent left-sided hemiparesis and hemispatial neglect eight days after a dental procedure. She was found to have extensive multi-focal ischemic infarctions secondary to vasculitis affecting multiple intracranial blood vessels.

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Importance: Safe and effective long-term treatments for moderate to severe plaque psoriasis are needed.

Objective: To evaluate the long-term safety and efficacy of deucravacitinib through 3 years (week 148) in the randomized POETYK PSO-1, PSO-2, and nonrandomized long-term extension (LTE) trials.

Design, Setting, And Participants: PSO-1/PSO-2 were global, 52-week, randomized, double-blinded phase 3 trials in patients with moderate to severe plaque psoriasis.

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Phenotypes and Trajectories of Tobacco-exposed Persons with Preserved Spirometry: Insights from Lung Volumes.

Ann Am Thorac Soc

November 2024

UCSF, Division of Pulmonary and Critical Care Medicine, Department of Medicine and CVRI, San Francisco, California, United States.

Among tobacco-exposed persons with preserved spirometry (TEPS), we previously demonstrated that different lung volume indices, specifically elevated total lung capacity (TLC) versus elevated ratio of functional residual capacity-to-TLC (FRC/TLC), identify different lung disease characteristics in the COPDGene cohort. Determine differential disease characteristics and trajectories associated with the lung volume indices among TEPS in the SPIROMICS cohort. We categorized TEPS (n=814) by tertiles (low, intermediate, high) of TLC or residual volume-to-TLC (RV/TLC) derived from baseline CT images, and then examined clinical and spirometric disease trajectories in mutually exclusive categories of participants with high TLC without high RV/TLC ([TLC]) versus high RV/TLC without high TLC ([RV/TLC]).

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Spatial resolution enhancement using deep learning improves chest disease diagnosis based on thick slice CT.

NPJ Digit Med

November 2024

Department of Radiological Sciences, Pathology & Laboratory Medicine, Electrical & Computer Engineering, and Bioengineering, University of California Los Angeles, Los Angeles, CA, USA.

CT is crucial for diagnosing chest diseases, with image quality affected by spatial resolution. Thick-slice CT remains prevalent in practice due to cost considerations, yet its coarse spatial resolution may hinder accurate diagnoses. Our multicenter study develops a deep learning synthetic model with Convolutional-Transformer hybrid encoder-decoder architecture for generating thin-slice CT from thick-slice CT on a single center (1576 participants) and access the synthetic CT on three cross-regional centers (1228 participants).

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Blood-brain barrier disruption and increased free water are associated with worse cognitive performance in patients with chronic cerebrovascular disease.

Neuroimage Clin

November 2024

National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, United States. Electronic address:

Progression of cerebral small vessel disease (CSVD) is associated with cognitive decline. Blood-brain barrier disruption (BBBD) and fluid extravasation to the interstitial space may contribute to progression of white matter hyperintensities (WMH). We hypothesized that increased free water (FW) would colocalize with BBBD and relate to cognitive performance.

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Article Synopsis
  • - Nephrotic syndrome (NS) is linked to a higher risk of blood clots, and although it's rare, patients can experience unexpected blood clots like deep vein thrombosis (DVT) and pulmonary embolism (PE) related to NS.
  • - The case study emphasizes the difficulty in timing kidney biopsies with the need for anticoagulation treatment, especially in patients with serious or widespread blood clots.
  • - The discussion includes how to choose the right anticoagulant for these patients and explores new treatment options for NS, highlighting the importance of considering individual patient risks and benefits through a team approach.
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ICU nutrition research: did the evidence get better? Remaining sources of bias.

Curr Opin Clin Nutr Metab Care

October 2024

Emeritus Professor Clinical Medicine, UCLA Medical Center Olive View, Sylmar, California.

Purpose Of The Review: To assess the quality of recently published (18 months from date of article request) randomized trials/systematic reviews of such trials that addressed the use of nutritional support in critically ill patients.

Recent Findings: Eligible papers were published between October 1, 2022 and April 7, 2024, only enrolled adults, described a comparison of a nutritional intervention to something else, and reported a clinically relevant outcome. Thirteen randomized trials and four systematic reviews of randomized trials were identified.

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Article Synopsis
  • The study investigates whether ultrasound detection of monosodium urate crystals can predict the development of symptomatic gout in individuals with elevated urate levels over a five-year period.
  • It involves more than 250 participants with asymptomatic hyperuricemia, assessing various health metrics and using ultrasound imaging to monitor the presence of MSU crystal deposition.
  • The research is ethically approved and aims to share findings through peer-reviewed publications and conferences.
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Background: Structured preparation is necessary to conduct quality improvement (QI) strategies that are relevant to the problem, feasible, appropriately resourced, and potentially effective. Recent work suggests that improvement efforts are suboptimally conducted. Our goal was to determine how well preparation for surgical QI is undertaken, including detailing the problem, setting project goals, and planning an intervention.

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Understanding Diversity, Equity, and Inclusion Roles in Academic Neurology Departments.

Neurology

November 2024

From the Department of Neurology (A.R.S.), Duke University School of Medicine, Durham, NC; Department of Neurology (N.A.M.), University of Rochester School of Medicine and Dentistry, NY; NeurAbilities Healthcare (M.C.), Voorhees, NJ; Department of Neurology (R.C.), Oregon Health Sciences University School of Medicine, Portland; Department of Neurology (C.C.F.I.), University of California Los Angeles David Geffen School of Medicine; Department of Neurology (C.A.G.), University of Maryland School of Medicine, Baltimore; Department of Neurology (R.H.H.), Perelman School of Medicine at the University of Pennsylvania, Philadelphia; Prisma Health (R.L.); Department of Neurology (T.S.M.), University of Miami Miller School of Medicine, FL; Department of Neurology (C.O.C.), Mayo Clinic Alix School of Medicine, Scottsdale, AZ; Department of Neurology (A.R.), University of California San Francisco School of Medicine; and Department of Neurology (R.P.T.), Stanford University School of Medicine, Palo Alto, CA.

Academic neurology departments across the country have been rapidly adding diversity, equity, and inclusion (DEI) programs over the past 5-10 years. These programs frequently come with leadership roles that carry a variety of names and responsibilities, such as vice chair of DEI or diversity officer. Furthermore, there are roles for members of the department to be involved with DEI work without being designated the departmental DEI leader.

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Background: Anecdotal evidence suggests paradoxical caffeine overuse in individuals with Huntington's disease (HD). A small retrospective study associated caffeine intake over 190 grams daily to earlier onset of HD symptoms. However, specific data on consumption habits is limited.

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Article Synopsis
  • Immunoassay test strips for detecting fentanyl and other drugs are widely used in various fields, but there is growing interest in expanding their application to test more substances like xylazine.
  • This study examines the effectiveness of test strips for seven drugs, focusing on their reproducibility, sensitivity, cross-reactivity, and how they perform after long storage at high temperatures.
  • The findings indicate that most strips remain effective and maintain sensitivity even when expired, though cross-reactivity with other compounds signals the need for careful consideration before using them in drug testing.
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Article Synopsis
  • * Researchers analyzed data from 503 midlife women, focusing on various HDL components and their changes over time to see their impact on cognitive functions like working memory and processing speed.
  • * Findings suggest that higher levels of certain HDL metrics are linked to better memory and cognitive performance, indicating that improving these HDL measures could be beneficial for cognitive health, especially in relation to Alzheimer’s disease.
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Purpose: To compare the accuracy and readability of responses to oculoplastics patient questions provided by Google and ChatGPT. Additionally, to assess the ability of ChatGPT to create customized patient education materials.

Methods: We executed a Google search to identify the 3 most frequently asked patient questions (FAQs) related to 10 oculoplastics conditions.

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Objective: To determine the extent to which within-hospital temporal clustering of postoperative complications is observed in the American College of Surgeons, National Surgical Quality Improvement Program (ACS-NSQIP).

Background: ACS-NSQIP relies on periodic and on-demand reports for quality benchmarking. However, if rapid increases in postoperative complication rates (clusters) are common, other reporting methods might be valuable additions to the program.

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Background: Cancer outcome disparities have been reported in highly vulnerable communities. The objective of this study was to evaluate the association of social vulnerability with receipt of guideline-concordant care (GCC) and mortality risk for patients with colorectal cancer.

Study Design: This retrospective observational study identified patients with stage I-III colon or stage II-III rectal cancer between 2018 and 2020 from the National Program of Cancer Registries Database.

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Validation and comparison of triage-based screening strategies for sepsis.

Am J Emerg Med

November 2024

Department of Pulmonary and Critical Care Medicine, Department of Medicine, Intermountain Medical Center, 5121 South Cottonwood St, Murray, UT, USA; Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Utah School of Medicine, 30 N 1900 E, Salt Lake City, UT, USA. Electronic address:

Objective: This study sought to externally validate and compare proposed methods for stratifying sepsis risk at emergency department (ED) triage.

Methods: This nested case/control study enrolled ED patients from four hospitals in Utah and evaluated the performance of previously-published sepsis risk scores amenable to use at ED triage based on their area under the precision-recall curve (AUPRC, which balances positive predictive value and sensitivity) and area under the receiver operator characteristic curve (AUROC, which balances sensitivity and specificity). Score performance for predicting whether patients met Sepsis-3 criteria in the ED was compared to patients' assigned ED triage score (Canadian Triage Acuity Score [CTAS]) with adjustment for multiple comparisons.

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