903 results match your criteria: "Institute of Medical Biometry and Statistics.[Affiliation]"

Purpose: Cumulative cisplatin doses of ≥ 200 mg/m improve survival in adults with head-and-neck squamous cell carcinoma (HNSCC) undergoing chemoradiation, but many older adults with HNSCC cannot receive this prognostically relevant dose due to toxicities. This study aims to develop predictive models to assess the likelihood of older adults with HNSCC receiving ≥ 200 mg/m cisplatin during chemoradiation.

Methods: 366 patients from the SENIOR database, an international cohort of adults ≥ 65 years with HNSCC, received definitive chemoradiation with single-agent cisplatin and were analyzed.

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Background: Many childhood cancer survivors (CCS) develop treatment-related late effects, including an increased risk of obesity and metabolic syndrome. A healthy lifestyle can reduce the risk of associated comorbidities. Therefore, at-risk CCS could benefit from lifestyle counseling during regular long-term follow-up (LTFU).

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The use of network meta-analysis (NMA) in sport and exercise medicine (SEM) research continues to rise as it enables the comparison of multiple interventions that may not have been assessed in a single randomised controlled trial. NMA can then inform clinicians on potentially better interventions. Despite the increased use of NMA, we have observed that in the SEM field, a key challenge for author groups can be the assessment and reporting of key assumptions, in particular transitivity and consistency.

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Early Albumin Administration in Veno-Arterial Extracorporeal Membrane Oxygenation.

Artif Organs

December 2024

Department of Cardiology and Angiology, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Freiburg im Breisgau, Germany.

Background: The clinical outcome and fluid balance of patients with veno-arterial extracorporeal membrane oxygenation (VA ECMO) or after extracorporeal cardiopulmonary resuscitation (eCPR) may be improved by addressing the high fluid demand with an early albumin administration.

Methods: In this prospective observational study, patients supported with VA ECMO or eCPR received early albumin administration (25 g/L) to prime the VA ECMO system. These patients were compared to patients who received a regimen based solely on balanced crystalloids (crystalloid group) or a regimen based on a 1:4 volume mixture of albumin (10 g/L) and balanced crystalloids (albumin group).

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Prognostic value of metabolic tumor volume on [F]FDG PET/CT in addition to the TNM classification system of locally advanced non-small cell lung cancer.

Cancer Imaging

December 2024

Department of Translational Imaging in Oncology, National Center for Tumor Diseases (NCT/UCC) Dresden, Medical Faculty and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Fetscherstraße 74, Dresden, 01307, Germany.

Purpose: Staging of non-small cell lung cancer (NSCLC) is commonly based on [F]FDG PET/CT, in particular to exclude distant metastases and guide local therapy approaches like resection and radiotherapy. Although it is hoped that PET/CT will increase the value of primary staging compared to conventional imaging, it is generally limited to the characterization of TNM. The first aim of this study was to evaluate the PET parameter metabolic tumor volume (MTV) above liver background uptake as a prognostic marker in lung cancer.

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In a longitudinal clinical registry, different measurement instruments might have been used for assessing individuals at different time points. To combine them, we investigate deep learning techniques for obtaining a joint latent representation, to which the items of different measurement instruments are mapped. This corresponds to domain adaptation, an established concept in computer science for image data.

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Objective: To test whether the use of a web application (www.metaHelper.eu) can reduce errors and time needed for statistical transformations commonly performed for meta-analysis.

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Impact of sedation depth on neurological outcome in post-cardiac arrest patients - A retrospective cohort study.

Resuscitation

December 2024

Department of Cardiology and Angiology, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany. Electronic address:

Article Synopsis
  • The study investigates whether different sedation depths during targeted temperature management (TTM) can affect neurological outcomes in post-cardiac arrest patients.
  • It analyzed data from a medical ICU over several years, comparing patients sedated to a RASS-target of -5 versus -4, focusing on favorable neurological outcomes defined as a Cerebral Performance Category (CPC) score of 1 or 2.
  • The results suggest that lighter sedation (RASS-target -4) is linked to better neurological outcomes and 30-day survival rates compared to deeper sedation (RASS-target -5), indicating a need for further research in this area.
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Article Synopsis
  • The text discusses the rapid development of Large Language Models (LLMs) like OpenAI's GPT and their increasing importance in fields such as science and medicine, yet highlights the need for evaluating their quality and effectiveness in statistical applications.
  • The project's objective is to explore the utility and satisfaction of LLMs in statistical consulting by creating and assessing a training module, while identifying strengths and areas for improvement.
  • The study employs a multimodal approach, incorporating both qualitative and quantitative methods across four parts to gather insights on using LLMs in consulting, evaluating training effectiveness, and understanding staff experiences and attitudes at the Medical Center and University of Freiburg.
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  • Utilization of ventricular assist devices (VAD) for end-stage heart failure is advanced, but there's a need for evidence-based psychosocial support interventions post-implantation.
  • A study in Germany involved 140 patients, randomly assigned to an intervention or control group, to evaluate the impact of a new VAD support curriculum on various health outcomes.
  • Results indicated that while primary health complications were similar across both groups, the intervention significantly reduced depression in patients and showed improvements in anxiety, quality of life, social support, and self-management for those receiving the VAD intervention.
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Background And Objective: Up to 50% of patients with prostate cancer experience prostate-specific antigen (PSA) relapse following primary radical prostatectomy (RP). Prostate-specific membrane antigen (PSMA) positron emission tomography (PET) is increasingly being used for staging after RP owing to its high detection rate. Our aim was to compare outcomes for patients who received salvage radiotherapy (sRT) with versus without PSMA PET guidance.

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Correction: Al-Ahmad et al. Biodentine Inhibits the Initial Microbial Adhesion of Oral Microbiota In Vivo. 2023, , 4.

Antibiotics (Basel)

November 2024

Medical Center, Department of Operative Dentistry and Periodontology, Faculty of Medicine, University of Freiburg, Hugstetter Str. 55, 79106 Freiburg, Germany.

We would like to update the readership about the procedure that led to the correction of [...

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Inotropes for the prevention of low cardiac output syndrome and mortality for paediatric patients undergoing surgery for congenital heart disease: a network meta-analysis.

Cochrane Database Syst Rev

November 2024

Department of Congenital Heart Disease and Pediatric Cardiology, University Heart Center, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.

Background: Paediatric patients undergoing surgery for congenital heart disease (CHD) are at risk for postoperative low cardiac output syndrome (LCOS) and mortality. LCOS affects up to 25% of children after heart surgery. It consists of reduced myocardial function and increases postoperative morbidity, prolongs mechanical ventilation, and lengthens the duration of intensive care unit (ICU) stay.

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  • The study analyzed the proteomic profiles of 79 bladder cancer samples, categorizing them into non-muscle-invasive (NMIBC), muscle-invasive (MIBC), and neoadjuvant-treated MIBC groups.
  • MIBC showed significant changes in the extracellular matrix and immune response-related proteins, as well as a decrease in proteins related to cell adhesion and lipid metabolism compared to NMIBC.
  • The research identified multiple proteomic subgroups within MIBC and NMIBC that correlate with tissue type and metabolic pathways, revealing complex tumor-stroma interactions and significant genomic alterations in the cancers.
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Background: Patient-reported outcomes (PROs) play an increasing role in the evaluation of oncology treatments. At the same time, single-arm trials are commonly included in regulatory approval submissions. Because of the high risk of biases, results from single-arm trials require careful interpretation.

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Acute suppression of mitochondrial ATP production prevents apoptosis and provides an essential signal for NLRP3 inflammasome activation.

Immunity

November 2024

Institute of Neuropathology, Faculty of Medicine, Medical Center, University of Freiburg, Freiburg, Germany; Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany. Electronic address:

Article Synopsis
  • Mitochondria play complex roles in two different cell death pathways: apoptosis and pyroptosis, particularly regarding NLRP3 inflammasome activation, but their exact mechanisms are not well understood.
  • The study found that activating NLRP3 while inhibiting apoptosis occurs when cells are under stress from various stimuli like nigericin and viruses, as these activators affect mitochondrial function rather than just triggering inflammasome activation.
  • NLRP3 activation needs a combination of signals—one from disrupted mitochondrial processes and another from specific NLRP3 activators—suggesting that both oxidative phosphorylation inhibition and apoptosis suppression influence cell fate.
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Factors associated with communication preferences in transgender and/or gender-diverse individuals - a survey study.

Patient Educ Couns

February 2025

Section of Health Care Research and Rehabilitation Research, Institute of Medical Biometry and Statistics, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg; Freiburg, Germany.

Introduction: As communication should be adapted to the individual, the aim of this study was to explore possible factors related to communication preferences in transgender and/or gender-diverse individuals.

Methods: A survey study was conducted in September 2022. Communication preferences were assessed using the CommTrans questionnaire, which included two scales: emotional resonance and gender-related communication.

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Dynamic modelling of signalling pathways when ordinary differential equations are not feasible.

Bioinformatics

November 2024

Institute of Medical Biometry and Statistics, Medical Center, Faculty of Medicine, University of Freiburg, Stefan-Meier-Str. 26, Freiburg, Baden-Württemberg, 79104, Germany.

Motivation: Mathematical modelling plays a crucial role in understanding inter- and intracellular signalling processes. Currently, ordinary differential equations (ODEs) are the predominant approach in systems biology for modelling such pathways. While ODE models offer mechanistic interpretability, they also suffer from limitations, including the need to consider all relevant compounds, resulting in large models difficult to handle numerically and requiring extensive data.

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Delirium after cardiac arrest: incidence, risk factors, and association with neurologic outcome-insights from the Freiburg Delirium Registry.

Clin Res Cardiol

November 2024

Department of Cardiology and Angiology, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Hugstetter Strasse 55, 79106, Freiburg, Germany.

Aim: Delirium in patients treated in the intensive care unit (ICU) is linked to adverse outcome, according to previous observations. However, data on patients recovering after cardiac arrest are sparse. The aim of this study was to assess incidence, risk factors, and outcome of patients with delirium after cardiac arrest in the Freiburg Delirium Registry (FDR).

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Impact of Pseudomonas aeruginosa carriage on intensive care unit-acquired pneumonia: a European multicentre prospective cohort study.

Clin Microbiol Infect

November 2024

Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands; Department of Medical Microbiology, University Medical Centre Utrecht, Utrecht University, Utrecht, the Netherlands.

Objectives: Pseudomonas aeruginosa (PA) is a common causative pathogen of pneumonia acquired in the intensive care unit (ICU). The aim of this study was to determine the incidence of PA ICU pneumonia (PAIP) and to quantify its independent association with PA colonization at different body sites.

Methods: Adult patients on mechanical ventilation at ICU admission were prospectively enrolled across 30 European ICUs.

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Background: In the randomized SOLVE-TAVI (compariSon of secOnd-generation seLf-expandable vs. balloon-expandable Valves and gEneral vs. local anesthesia in Transcatheter Aortic Valve Implantation) trial comparing newer-generation self-expanding valves (SEV) and balloon-expandable valves (BEV), as well as conscious sedation (CS) and general anesthesia (GA), clinical outcomes were similar both for valve and anesthesia comparison at 30 days and 1 year.

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Foxi1 is a master regulator of ionocytes (ISCs / INCs) across species and organs. Two subtypes of ISCs exist, and both α- and β-ISCs regulate pH- and ion-homeostasis in epithelia. Gain and loss of FOXI1 function are associated with human diseases, including Pendred syndrome, male infertility, renal acidosis and cancers.

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Digital workflow to assess gingival recession coverage independently of the cemento-enamel Junction: a prospective clinical study using the modified coronally advanced tunnel technique with porcine dermal matrix.

Clin Oral Investig

October 2024

Department of Oral and Maxillofacial Surgery/Translational Implantology, Center for Dental Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, Freiburg, 79106, Germany.

Objectives: The limited number of studies using digital workflows to measure soft tissue changes depend on the cemento-enamel junction (CEJ), which has been reported to be unreliable. Our primary objective was to apply an advanced digital assessment method, measuring independent from the CEJ to evaluate the modified coronally advanced tunnel technique (MCAT) with a porcine dermal matrix (PDM) for gingival recession coverage.

Materials And Methods: Patients with type RT1 and RT2 gingival recessions were treated with the MCAT and a PDM.

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During a fatal disease, patients often request updated information on their prognosis. After patients have already survived a certain time, conditional survival captures their future survival probability. We investigated conditional overall and failure-free survival in 473 younger mantle cell lymphoma (MCL) patients from a randomized phase III trial comparing immunochemotherapies R-CHOP and alternating R-CHOP/R-DHAP before autologous transplantation.

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