2,311 results match your criteria: "Lausanne University Hospital-CHUV[Affiliation]"

Background: Cutaneous epidermal nevi are genotypically diverse mosaic disorders. Pathogenic hotspot variants in , , and less frequently and may cause isolated keratinocytic epidermal nevi and sebaceous nevi or several different syndromes when associated with extracutaneous anomalies. Therefore, some authors suggest the concept of mosaic RASopathies to group these different disorders.

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Article Synopsis
  • - The study evaluates the physical fitness trends among Swiss male conscripts from 2007 to 2022, highlighting concerns about the high rates of obesity in young adults affecting military recruitment.
  • - Analysis of medical data reveals that conscripts with obesity or overweight have significantly poorer scores in physical fitness tests compared to those of normal weight, indicating a greater likelihood of being rated as "Insufficient" or "Sufficient."
  • - Findings suggest that the physical fitness levels of overweight and obese conscripts are deteriorating over time, emphasizing the need for better interventions to improve fitness among this population.
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There is a recent resurgence of interest in phage therapy (the therapeutic use of bacterial viruses) as an approach to eliminating difficult-to-treat infections. However, existing approaches for therapeutic phage selection and virulence testing are time-consuming, host-dependent, and facing reproducibility issues. Here, this study presents an innovative approach wherein integrated resonant photonic crystal (PhC) cavities in silicon are used as optical nanotweezers for probing and manipulating single bacteria and single virions with low optical power.

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Acute Response of the Noninfarcted Myocardium and Surrounding Tissue Assessed by T2 Mapping After STEMI.

JACC Cardiovasc Imaging

June 2024

Division of Cardiology, Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale, Lugano, Switzerland; Center for Cardiac Magnetic Resonance of the CHUV (CRMC), Lausanne University Hospital, Lausanne, Switzerland. Electronic address:

Article Synopsis
  • This study investigates the role of T2 values in the noninfarcted myocardium (NIM) after a heart attack (STEMI) to better understand tissue-level inflammation and its implications for patient outcomes.
  • The research involved 171 patients and found that higher T2 values in the NIM were linked to larger heart muscle damage, poor heart function, and did not correlate with typical inflammatory markers.
  • Patients with elevated NIM T2 values had a significantly higher risk of major cardiovascular events, particularly reinfarction, highlighting the potential of T2 mapping as a prognostic tool post-STEMI.
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The Advanced Trauma Life Support (ATLS) approach is generally accepted as the standard of care for the initial management of severely injured patients. While whole body computed tomography (WBCT) is still considered a contraindication in haemodynamically unstable trauma patients, there is a growing amount of data indicating the absence of harm from cross sectional imaging in this patient group. Our study aimed to compare the early mortality of unstable trauma patients undergoing a WBCT during the initial workup with those who did not.

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MHC-I upregulation safeguards neoplastic T cells in the skin against NK cell-mediated eradication in mycosis fungoides.

Nat Commun

January 2024

Department of Dermatology, Lausanne University Hospital (CHUV) and Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland.

Cancer-associated immune dysfunction is a major challenge for effective therapies. The emergence of antibodies targeting tumor cell-surface antigens led to advancements in the treatment of hematopoietic malignancies, particularly blood cancers. Yet their impact is constrained against tumors of hematopoietic origin manifesting in the skin.

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Rational strain design with minimal phenotype perturbation.

Nat Commun

January 2024

Laboratory of Computational Systems Biology (LCSB), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.

Devising genetic interventions for desired cellular phenotypes remains challenging regarding time and resources. Kinetic models can accelerate this task by simulating metabolic responses to genetic perturbations. However, exhaustive design evaluations with kinetic models are computationally impractical, especially when targeting multiple enzymes.

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Introduction: ADP-stimulated elevation of cytosolic Ca is an important effector mechanism for platelet activation. The rapidly elevating cytosolic Ca is also transported to mitochondrial matrix via Mitochondrial Ca Uniporter (MCU) and extruded via Na/Ca/Li Exchanger (NCLX). However, the exact contribution of MCU and NCLX in ADP-mediated platelet responses remains incompletely understood.

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Day Admission Surgery Program in a Prospective Payment System: What Are the Financial Incentives?

Health Serv Insights

January 2024

Department of Visceral Surgery, Lausanne University Hospital CHUV, University of Lausanne (UNIL), Lausanne, Switzerland.

Background: Day admission surgery (DAS) is meant to provide a better in-hospital experience for patients and to save costs by reducing the length of stay. However, in a prospective payment system, it may also reduce the reimbursement amount, leading to unintended incentives for hospitals.

Methods: Over a 4-month period in 2021 and based on predefined clinical and logistic criteria, patients from different surgical sub-specialties were identified to follow the institutional DAS program.

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Article Synopsis
  • The study aimed to investigate factors related to lateral lymph node (LLN) involvement in patients with locally advanced rectal cancer (LARC) undergoing neoadjuvant chemoradiotherapy (nCRT) and surgery, focusing on their effect on local recurrence rates.
  • The retrospective analysis included 301 LARC patients treated between 2014 and 2019, assessing MRI results for LLN involvement and categorizing patients based on whether they had suspicious nodes.
  • Findings revealed that while 15.9% showed suspicious LLNs on initial MRI, abnormal LLNs did not independently affect local recurrence rates after 3 years, suggesting they may not be a significant risk factor in this context.
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The Promise and Pitfalls of AI-Generated Anatomical Images: Evaluating Midjourney for Aesthetic Surgery Applications.

Aesthetic Plast Surg

May 2024

Gynecologist, Department of Obstetrics and Gynaecology, IRCCS San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina 58-60, 20132, Milan, Italy.

Backgrounds: The rapid advancement of generative artificial intelligence (AI) systems, such as Midjourney, has paved the way for their use in medical training, producing computer-generated images. However, despite clear disclosures stating that these images are not intended for medical consultations, their accuracy and realism are yet to be thoroughly examined.

Methods: A series of requests were addressed to the Midjourney AI tool, a renowned generative artificial intelligence application, with a focus on depicting appropriate systemic anatomy and representing aesthetic surgery operations.

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The role of dietary patterns in the development of osteoporosis is unclear. The heel quantitative ultrasound (QUS) is a potential alternative to Dual X-Ray Absorptiometry. Nutrients, foods, dietary patterns and compliance to dietary guidelines were compared between the lowest and the highest tertiles of QUS parameters [Broadband Ultrasound Attenuation (BUA), Speed of Sound (SOS), Stiffness Index (SI)], using data from the OsteoLaus cohort.

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Five dominant dimensions of brain aging are identified via deep learning: associations with clinical, lifestyle, and genetic measures.

medRxiv

December 2023

Artificial Intelligence in Biomedical Imaging Laboratory (AIBIL), Center for and Data Science for Integrated Diagnostics (AID), Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.

Brain aging is a complex process influenced by various lifestyle, environmental, and genetic factors, as well as by age-related and often co-existing pathologies. MRI and, more recently, AI methods have been instrumental in understanding the neuroanatomical changes that occur during aging in large and diverse populations. However, the multiplicity and mutual overlap of both pathologic processes and affected brain regions make it difficult to precisely characterize the underlying neurodegenerative profile of an individual from an MRI scan.

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Pulmonary veno-occlusive disease: illustrative cases and literature review.

Eur Respir Rev

January 2024

Assistance Publique - Hôpitaux de Paris (AP-HP), Department of Respiratory and Intensive Care Medicine, Pulmonary Hypertension National Referral Center, DMU 5 Thorinno, Hôpital Bicêtre, Le Kremlin-Bicêtre, France

Pulmonary veno-occlusive disease (PVOD), also known as "pulmonary arterial hypertension (PAH) with overt features of venous/capillary involvement", is a rare cause of PAH characterised by substantial small pulmonary vein and capillary involvement, leading to increased pulmonary vascular resistance and right ventricular failure. Environmental risk factors have been associated with the development of PVOD, such as occupational exposure to organic solvents and chemotherapy, notably mitomycin. PVOD may also be associated with a mutation in the gene in heritable forms of disease.

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Recent advances in clinical electroencephalography.

Curr Opin Neurol

April 2024

Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund.

Article Synopsis
  • Clinical electroencephalography (EEG) is slow to adapt to new research developments, creating a disconnect between current practices and technological advancements.
  • The review highlights recent advancements in three specific areas: source imaging for presurgical evaluations in epilepsy, high-frequency oscillations as potential biomarkers, and the use of EEG in critically ill patients.
  • By discussing both the achievements and limitations in these areas, the review aims to enhance clinical application and promote further research in EEG techniques.
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  • A meta-analysis of data from 46 cohorts found that individuals who reported falling in the past year had an increased risk of fractures, highlighting falls as an important factor for fracture risk assessment.
  • Previous falls were correlated with a significant rise in fracture risks for both men and women, with hazard ratios indicating that the risk is greater for men.
  • The study suggests that falls should be included in the FRAX® algorithm, which currently does not consider this important risk factor for osteoporotic fractures.
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Background And Aims: The ICD-11 chapter on mental, behavioral and neurodevelopmental disorders contains new controversial diagnoses including compulsive sexual behavior disorder (CSBD), intermittent explosive disorder (IED) and gaming disorder. Using a vignette-based methodology, this field study examined the ability of mental health professionals (MHPs) to apply the new ICD-11 diagnostic requirements for impulse control disorders, which include CSBD and IED, and disorders due to addictive behaviors, which include gaming disorder, compared to the previous ICD-10 guidelines.

Methods: Across eleven comparisons, members of the WHO's Global Clinical Practice Network (N = 1,090) evaluated standardized case descriptions that were designed to test key differences between the diagnostic guidelines of ICD-11 and ICD-10.

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Task-based detectability in anatomical background in digital mammography, digital breast tomosynthesis and synthetic mammography.

Phys Med Biol

January 2024

UZ Gasthuisberg, Department of Radiology, Herestraat 49, 3000 Leuven, Belgium.

Determining the detectability of targets for the different imaging modalities in mammography in the presence of anatomical background noise is challenging. This work proposes a method to compare the image quality and detectability of targets in digital mammography (DM), digital breast tomosynthesis (DBT) and synthetic mammography..

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Article Synopsis
  • The menopause transition is linked to increased cardiometabolic risk factors, which may lead to brain abnormalities known as white matter hyperintensities (WMHs).
  • A study analyzed data from nearly 10,000 UK Biobank women to compare cardiometabolic health indicators like BMI, blood lipids, and glucose levels between premenopausal and postmenopausal groups.
  • Results showed postmenopausal women had worse cardiometabolic health markers, with specific changes in BMI and waist-to-hip ratio over time, indicating distinct health trajectories for women before and after menopause.
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Mogamulizumab Combined with Extracorporeal Photopheresis as a Novel Therapy in Erythrodermic Cutaneous T-cell Lymphoma.

Cancers (Basel)

December 2023

Department of Dermatology, Venereology and Allergology, University Medical Center Mannheim, University of Heidelberg, 68167 Mannheim, Germany.

Background: Primary cutaneous T-cell lymphomas (CTCLs) are rare lymphoproliferative malignancies characterized by significant morbidity and mortality in advanced disease stages. As curative approaches apart from allogeneic stem cell transplantation are lacking, establishing new treatment options, especially combination therapies, is crucial.

Methods: This retrospective study included 11 patients with SS or MF receiving therapy with mogamulizumab in combination with ECP from four European expert centers.

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Informative sample selection in an active learning (AL) setting helps a machine learning system attain optimum performance with minimum labeled samples, thus reducing annotation costs and boosting performance of computer-aided diagnosis systems in the presence of limited labeled data. Another effective technique to enlarge datasets in a small labeled data regime is data augmentation. An intuitive active learning approach thus consists of combining informative sample selection and data augmentation to leverage their respective advantages and improve the performance of AL systems.

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Background: Although neoadjuvant chemoradiation (nCRT) followed by surgery is standard treatment for locally advanced esophageal or gastroesophageal junction (E/GEJ) cancer, the optimal radiation dose is still under debate.

Objective: The aim of this study was to assess the impact of different preoperative radiation doses (41.4 Gy, 45 Gy or 50.

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