Publications by authors named "Pierre Jean"

Polypharmacy (PP) and hyperpolypharmacy (HPP), are prevalent among cancer patients and are associated with an increased risk of drug-drug interactions (DDI) and potentially inappropriate medications (PIM). This study aimed to characterize PP, HPP, DDI, and PIM in patients with hematological malignancies hospitalized for hematopoietic stem cell transplantation (HSCT) by introducing a novel metric: cumulative drug exposure. Clinical data warehouse (CDW) records were employed to develop algorithms that quantified patients' cumulative exposure to these prescribing determinants during hospitalization.

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  • Graft-versus-host disease (GVHd) poses a challenge after allogeneic hematopoietic stem cell transplantation (HSCT), with ciclosporin used for prevention but showing complex variations in metabolism due to factors like inflammation.
  • A study involving 71 adult HSCT patients assessed the relationship between inflammation levels (measured by C-reactive protein) and ciclosporin metabolism, finding that severe inflammation led to decreased metabolism but did not affect blood levels thanks to dose adjustments.
  • The study concluded that inflammation significantly impacts ciclosporin pharmacokinetics, emphasizing the need for careful therapeutic monitoring and potential personalized dosage strategies in HSCT patients.
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  • The paper presents a new method to improve access to clinical data warehouses (CDWs) for researchers and biomedical companies.
  • It introduces a clinical data catalogue that answers key questions about data availability, quantity, and generation to aid project development.
  • A prototype of the catalogue is demonstrated using visualization from the CDW of Rennes University Hospital.
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  • - The paper discusses a new visualization dashboard designed to display quality indicators for intensive care units (ICUs) utilizing the OMOP Common Data Model (CDM).
  • - This dashboard allows users to visualize important quality data through various formats like histograms, pie charts, and tables.
  • - Future plans include adding more quality indicators to the dashboard and assessing feedback from clinicians on its usefulness.
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  • * It highlights real-world events, such as new equipment or changes in formulas, that can disrupt the consistency of lab result values over time, which necessitates monitoring for data quality.
  • * The authors propose an automated dashboard using change point detection methods to track and visualize these disruptions, allowing for better understanding and explanation of changes in lab assays by biologists.
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Background: Achilles tendon (AT) disorders significantly impact patient life, necessitating accurate assessment tools. Current methods are often complex and time-consuming. This study aims to validate the Simple Ankle Value (SAV) for AT disorders.

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  • Tinzaparin may offer a more manageable treatment option than unfractionated heparin for patients with severe renal impairment, but there's limited data on its pharmacokinetics and complications in this group.
  • This study aimed to analyze the pharmacokinetics of tinzaparin and evaluate bleeding and thrombotic complications in patients with an estimated glomerular filtration rate (eGFR) under 30 mL.min⁻.
  • Results showed that tinzaparin's pharmacokinetics were similar to those in patients without renal impairment, with low rates of major bleeding and no thrombotic complications, indicating it could be a viable alternative for these patients.
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  • * Diagnosis is typically made through visual symptoms, but Point of Care Ultrasound (POCUS) can help confirm cases by identifying structures in the skin.
  • * In a reported case, an 18-year-old woman developed itchy feet after walking on the beach, and POCUS confirmed larva migrans, allowing for effective treatment with medication.
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  • Antibiotics, particularly ceftriaxone, are commonly used to manage infections in older adults, but there's limited safety data on subcutaneous administration.
  • A study compared adverse events from ceftriaxone given subcutaneously versus intravenously in patients aged 75 and older, finding that 18% of the subcutaneous group reported issues compared to 40% in the intravenous group.
  • The results suggest that subcutaneous ceftriaxone may lead to fewer adverse events and could be a more practical option for infection management in geriatric patients.
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  • Researchers aimed to classify heart failure with preserved ejection fraction (HFpEF) patients into distinct phenotypes due to their varied prognoses and treatment needs.
  • The study utilized machine learning to analyze clinical data and echocardiography results from a large hospital database, identifying four unique phenotypic clusters.
  • The findings suggest that AI-driven phenotypes can help doctors better assess patient risk and tailor treatment plans to improve health outcomes.
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Purpose: We aimed to assess the prognostic value of baseline tumor burden and dissemination parameters extracted from 18 F-FDG PET/CT in patients with early or advanced Hodgkin lymphoma (HL) treated with ABVD (doxorubicin, bleomycin, vinblastine, and dacarbazine) or escalated BEACOPP (increased bleomycin, etoposide, doxorubicin, cyclophosphamide, vincristine, procarbazine, and prednisone).

Patients And Methods: Patients aged ≥18 years with classical Hodgkin lymphoma were retrospectively included. Progression-free survival (PFS) analysis of dichotomized clinicobiological and PET/CT parameters (SUV max , TMTV, TLG, D max , and D bulk ) was performed.

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Emotions play a fundamental role in human interactions and trigger responses in physiological, psychological, and behavioral modalities. Interpersonal coordination often entails attunement between individuals in various modalities. Previous research has elucidated the mechanisms of interpersonal synchronization and the emotions aroused by joint action: cardiac activity aligns in disputing marital couples, spectators share enjoyment in observing live dance performances, and joint finger-tapping evokes positive emotions.

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In France and in other countries, we observed a significant growth in human polyvalent immunoglobulins (PvIg) usage. PvIg is manufactured from plasma collected from numeral donors, and its production is complex. Supply tensions have been observed for several years, and it is necessary to limit their consumption.

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The ability to synchronise with other people is a core socio-motor competence acquired during human development. In this study we aimed to understand the impact of individual emotional arousal on joint action performance. We asked 15 mixed-gender groups (of 4 individuals each) to participate in a digital, four-way movement synchronisation task.

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  • Chronic Kidney Disease (CKD) is a significant health issue in lower-income countries, and this study aimed to assess its prevalence and associated factors in urban Haiti, highlighting the lack of similar research in these areas.
  • The study analyzed data from 2,424 adults, finding a 14% prevalence of CKD, with diabetes and hypertension being major risk factors.
  • Only 12% of individuals with CKD received proper treatment, indicating a gap in healthcare access and guidelines in managing this condition.
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Neighborhood factors have been associated with health outcomes, but this relationship is underexplored in low-income countries like Haiti. We describe perceived neighborhood cohesion and perceived violence using the Neighborhood Collective Efficacy and the City Stress Inventory scores. We hypothesized lower cohesion and higher violence were associated with higher stress, depression, and hypertension.

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Background: Hypertension (HTN) is the leading cardiovascular disease (CVD) risk factor in Haiti and is likely driven by poverty-related social and dietary factors. Salt consumption in Haiti is hypothesized to be high but has never been rigorously quantified.

Methods: We used spot urine samples from a subset of participants in the population-based Haiti Cardiovascular Disease Cohort to estimate population mean daily sodium intake.

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Background: Multidrug therapy is a World Health Organization "best buy" for the prevention and control of noncommunicable diseases. CVD polypills, including ≥2 blood pressure medications, and a statin with or without aspirin, are an effective, scalable strategy to close the treatment gap that exists in many low- and middle-income countries, including Haiti. We estimated the number of Haitian adults eligible for an atherosclerotic CVD (ASCVD) polypill, and the number of potentially preventable CVD events if polypills were implemented nationally.

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Purpose: The preferred hypothesis for the dissemination patterns of Hodgkin lymphoma (HL) is the contiguity hypothesis. However, this hypothesis is based on studies performed before the advent of [F]-FDG PET/CT which is now the established reference for HL staging. This study aims to extract the dissemination patterns of HL using [F]-FDG PET/CT and a probability network model.

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  • Vital status after hospital discharge is crucial for biomedical data warehouses but often lacks reliable data; the French National Mortality Database (FNMD) provides a potential solution, although matching BDW records with FNMD presents various challenges like name changes and clerical errors.
  • The study developed a deterministic algorithm using advanced data cleaning techniques and the Damerau-Levenshtein distance to improve the matching process and assessed its performance across records from three university hospitals in France.
  • Results showed that the new algorithm had a significantly higher sensitivity (93.3%) compared to a simpler direct matching method (82.7%), especially for men and patients born in France, demonstrating its effectiveness in identifying deceased patients.
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  • * The study found that factors such as age, income, and sex are associated with higher obesity rates, with women experiencing a much greater prevalence—89.2% of those classified as obese were women, and 68.3% of women had abdominal obesity.
  • * Findings suggest a critical need for targeted interventions in Haiti, especially for women, as they face a six-fold higher obesity risk compared to men, exacerbating health vulnerabilities in the population.
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Haiti is a low-income country whose population lives under repeated and chronic stress from multiple natural disasters, civil unrest, and extreme poverty. Stress has been associated with cardiovascular (CVD) risk factors including hypertension, and the impact of stress on blood pressure may be moderated by support. The distribution of stress, support, and their association with blood pressure has not been well described in low-income countries.

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Patients suffering from heart failure (HF) symptoms and a normal left ventricular ejection fraction (LVEF 50%) present very different clinical phenotypes that could influence their survival. This study aims to identify phenotypes of this type of HF by using the medical information database from Rennes University Hospital Center. We present a preliminary work, where we explore the use of clinical variables from health electronic records (HER) in addition to echocardiography to identify several phenotypes of patients suffering from heart failure with preserved ejection fraction.

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Noninvasive biomarkers such as methylated ccfDNA from plasma could help to support the diagnosis of Alzheimer's disease (AD). A targeted sequencing protocol was developed to identify candidate biomarkers of AD in methylated ccfDNA extracted from plasma. The authors identified differentially methylated CpGs, regions of which were the same as those identified in previous AD studies.

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