Publications by authors named "Clement Hoffmann"

To diagnose Gougerot-Sjögren syndrome (GSS), ultrasound imaging (US) is a promising tool for helping physicians and experts. Our project focuses on the automatic detection of the presence of GSS using US. Ultrasound imaging suffers from a weak signal-to-noise ratio.

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Background: Venous thromboembolism (VTE) is a common health issue. A clinical expression of VTE is a deep vein thrombosis (DVT) that may lead to pulmonary embolism (PE), a critical illness. When DVT is suspected, an ultrasound exam is performed.

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Article Synopsis
  • A multicentric study analyzed the prevalence and risk factors of persistent pain in patients who stayed in an ICU for 48 hours or more, revealing that 47.7% experienced significant pain three months post-admission.
  • Key risk factors for persistent pain included being female, previous use of antidepressants, specific positioning during care, and having pain symptoms at discharge.
  • Despite the high prevalence of pain, only 11.3% of patients received specialized pain management within three months, indicating a need for better pain management strategies in critical care settings.
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Introduction: In case of COVID-19 related scarcity of critical care resources, an early French triage algorithm categorized critically ill patients by probability of survival based on medical history and severity, with four priority levels for initiation or continuation of critical care: P1 -high priority, P2 -intermediate priority, P3 -not needed, P4 -not appropriate. This retrospective multi-center study aimed to assess its classification performance and its ability to help saving lives under capacity saturation.

Methods: ICU patients admitted for severe COVID-19 without triage in spring 2020 were retrospectively included from three hospitals.

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Article Synopsis
  • Myeloproliferative neoplasms (MPNs) present a heightened risk of thrombotic and hemorrhagic complications in older patients, particularly those with comorbidities such as atrial fibrillation (AF) and peripheral arterial disease (PAD).
  • In a study of 1,113 MPN patients, 26% were found to have at least one of these conditions, with significant rates of thrombotic events—31.3% in AF patients and 35.8% in PAD patients—compared to 20.1% in patients without both conditions.
  • The analysis highlighted that AF and PAD are major risk factors for increased thrombosis, bleeding, and mortality, underscoring the
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Background:  Hormonal exposure leads to an increased risk of venous thromboembolism (VTE) but the risk of VTE associated with assisted reproductive technology (ART) is not clearly determined.

Methods:  We searched in PubMed, EMBASE, Web of Science, and the Cochrane Library databases and identified all relevant articles published up to February 1, 2021. The primary objective was to determine the frequency of VTE associated with ART.

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This paper describes a currently on-going multicenter, randomized controlled trial designed to assess the efficacy of calf neuromuscular electrical stimulation (NMES) on changes in maximal walking distance in people with lower extremity peripheral artery disease (PAD), compared with a non-intervention control-group. This study (NCT03795103) encompasses five participating centers in France. PAD participants with a predominant claudication at the calf level and a maximal treadmill walking distance ≤300 m are randomized into one of the two groups: NMES group or Control group.

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Purpose: In-hospital cardiac arrest is associated with high morbidity and mortality, with an overall survival rate at one year of approximately 13%. The first cardiac rhythm is often analyzed by anesthesiologist-intensivists. We aimed to determine the diagnostic performance of anesthesiologist-intensivists when distinguishing between shockable and nonshockable rhythms.

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After first episodes of venous thromboembolism (VTE), patients are at increased risk of recurrent VTE and arterial thrombotic events (ATE) compared with the general population, two disorders that are influenced by anticoagulation. However, risk factors of these conditions occurring during and after anticoagulation are little described. Using cause-specific hazard regression models, we aimed to determine risk factors of the composite outcome recurrent VTE/ATE, and separately recurrent VTE or ATE, during and after anticoagulation in patients with first episodes of VTE from a prospective cohort.

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Background:  There is an increased risk of arterial events including major adverse cardiovascular events (MACE) and major adverse limb events (MALE) after venous thromboembolism (VTE). However, their risk factors remain little explored.

Methods:  We aimed to determine the risk factors for MACE (acute coronary syndrome/stroke/cardiovascular death) and MALE (limb ischemia/critical limb ischemia/non-traumatic amputation/any limb revascularization) after VTE.

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Purpose: Traumatic hemorrhagic shock (THS) is a complex, dynamic process and, no consensual definition of THS is available. This study aims (1) to explore existing definitions of traumatic hemorrhagic shock (THS), (2) to identify essential components of these definitions and (3) to illustrate in a pragmatic way the consequences of applying five of these definitions to a trauma registry.

Methods: We conducted (1) a scoping review to identify the definitions used for traumatic hemorrhagic shock (THS); (2) an international experts survey to rank by relevance a selection of components extracted from these definitions and (3) a registry-based analysis where several candidate definitions were tested in a large trauma registry to evaluate how the use of different definitions affected baseline characteristics, resources use and patient outcome.

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Background:  Cardiovascular deaths (CVDTs) are more frequent in patients with venous thromboembolism (VTE) than in the general population; however, risk factors associated with this increased risk of CVDT in patients with VTE are not described.

Methods:  To determine the risk factors of CVDT in patients with VTE from a multicenter prospective cohort study, Fine and Gray subdistribution hazard models were conducted.

Results:  Of the 3,988 included patients, 426 (10.

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Background: It was recently established that patients who developed VTE are at increased risk of major adverse cardiovascular events (MACE) compared with the general population. However, whether the anticoagulation used for VTE influences the risk of MACE remains undescribed.

Research Question: Does the anticoagulant treatment for VTE affect the risk of subsequent MACE?

Study Design And Methods: This study included patients from a large prospective cohort who received only one family of anticoagulant treatment after the acute phase of VTE, including vitamin K antagonist (VKAs) and direct oral anticoagulants (DOACs).

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Introduction: The increased risk of arterial thrombotic (ATE) after VTE, particularly when they are unprovoked or cancer-associated has been established. However, the risk factors of ATE after these VTE remain unclear.

Material And Methods: Using cause-specific hazard regression models, we determined risk factors of ATE (myocardial infarction, ischemic stroke, acute limb ischemia, digestive tract ischemia, or renal ischemia) in 2242 patients with unprovoked VTE and in 914 patients with cancer-associated VTE from a multi-center prospective cohort.

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Objective: To evaluate the diagnosis performances of halo and compression signs alone and combined, assessed by a high frequency 22-MHz probe, and test their agreement in giant cell arteritis (GCA).

Methods: In this cross-sectional study on patients suspected with GCA, halo sign was defined as hypo or iso-echogenic circumferential aspect of the vessel wall in transverse or longitudinal view; and compression sign was defined as visibility of the vessel wall upon transducer-imposed compression of the artery. Agreement of the two signs was tested using the Cohen's kappa statistic.

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Background: We aimed to validate and to refine current recurrent venous thromboembolism (VTE) risk classification.

Methods: We performed a analysis of a multicentre cohort including 1881 patients with a first symptomatic VTE prospectively followed after anticoagulation discontinuation. The primary objective was to validate the International Society of Thrombosis and Haemostasis (ISTH) risk classification in predicting recurrence risk.

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Many studies from current literature show that cardiovascular diseases in patients with venous thromboembolism (VTE) are more frequent than in the general population without VTE. However, data summarizing the impact of cardiovascular diseases on mortality of patients with VTE are lacking. In this systematic review and meta-analysis, we aimed to determine the frequency and incidence rate of cardiovascular death in patients with VTE.

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Background:  If recent studies suggested that arterial ischemic events in patients with venous thromboembolism (VTE) are more frequent than in the general population without VTE, whether patients with VTE have different risk factors of arterial events than classic known cardiovascular risk factors remain undefined. Through this systematic review and meta-analysis, we aimed to identify risk factors of arterial ischemic events in patients with VTE.

Methods:  We searched PubMed, EMBASE, and Cochrane databases to identify cohort studies published between January 1, 2000, and December 31, 2020, reporting risk factors of arterials ischemic events in patients with VTE.

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Aim: Describing acute respiratory distress syndrome patterns, therapeutics management, and outcomes of ICU COVID-19 patients and indentifying risk factors of 28-day mortality.

Methods: Prospective multicentre, cohort study conducted in 29 French ICUs. Baseline characteristics, comorbidities, adjunctive therapies, ventilatory support at ICU admission and survival data were collected.

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Background: Recent literature hypothesized that patients with venous thromboembolism (VTE) are at increased risk of developing arterial ischemic events than general population without VTE. However, data summarizing the epidemiology of arterial events among VTE population compared to the general population are lacking.

Methods: We conducted a systematic review and meta-analysis from current literature.

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Thromboangiitis obliterans (TAO) is a distal non atherosclerotic thrombotic vasculitis affecting tobacco smokers. The role of cannabis co-exposure remains controversial. The study aims to assess how cannabis consumption influences clinical presentation and outcome of TAO in tobacco smokers.

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Purpose: Little is known about the diagnostic concordance of images provided by ultrasound probes with emitting frequencies below or above 20 MHz for the diagnosis of giant cell arteritis (GCA).

Methods: We compared, using Cohen's kappa statistic, data obtained with an 18-MHz and a 22-MHz probe for the ultrasonographic evaluation of temporal arteries in 80 patients referred for suspected GCA.

Results: The halo sign was found in 25% of cases with the 18-MHz probe and in 35% with the 22-MHz probe.

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Background: Characterisation of arterial Doppler waveforms is a persistent problem and a source of confusion in clinical practice. Classifications have been proposed to address the problem but their efficacy in clinical practice is unknown. The aim of the present study was to compare the efficacy of the categorisation rate of Descotes and Cathignol, Spronk et al.

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Background:  We aimed to assess whether high pulmonary vascular obstruction index (PVOI) measured at the time of pulmonary embolism (PE) diagnosis is associated with an increased risk of recurrent venous thromboembolism (VTE).

Study Design And Methods:  French prospective cohort of patients with a symptomatic episode of PE diagnosed with spiral computerized tomography pulmonary angiography (CTPA) or ventilation-perfusion (V/Q) lung scan and a follow-up of at least 6 months after anticoagulation discontinuation. PVOI was assessed based on the available diagnostic exam (V/Q lung scan or CTPA).

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Importance: The prevalence of pulmonary embolism in patients with chronic obstructive pulmonary disease (COPD) and acutely worsening respiratory symptoms remains uncertain.

Objective: To determine the prevalence of pulmonary embolism in patients with COPD admitted to the hospital for acutely worsening respiratory symptoms.

Design, Setting, And Participants: Multicenter cross-sectional study with prospective follow-up conducted in 7 French hospitals.

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