A5018713815- Mercury impact and mitigation studies
- COVID-19 Clinical Research Studies
- Intensive Care Unit Cognitive Disorders
- Sepsis Diagnosis and Treatment
- Respiratory Support and Mechanisms
- Heavy Metal Exposure and Toxicity
- Isotope Analysis in Ecology
- Venous Thromboembolism Diagnosis and Management
- Marine and coastal ecosystems
- Paleontology and Stratigraphy of Fossils
- Aquatic Invertebrate Ecology and Behavior
- Toxic Organic Pollutants Impact
- Geological formations and processes
- Heparin-Induced Thrombocytopenia and Thrombosis
- Pneumonia and Respiratory Infections
- Renal function and acid-base balance
- Family and Patient Care in Intensive Care Units
- Infrared Target Detection Methodologies
- Nosocomial Infections in ICU
- Long-Term Effects of COVID-19
- Heavy metals in environment
- Marine animal studies overview
- COVID-19 and healthcare impacts
- Cardiac Arrest and Resuscitation
- Advanced Glycation End Products research
Université Laval
2001-2024
Université de Montréal
2015-2023
Université du Québec à Montréal
2021-2023
Centre National de la Recherche Scientifique
2022
Hôpital Raymond-Poincaré
2021-2022
Université de Sherbrooke
2020
Lawrence Berkeley National Laboratory
2020
Université de Caen Normandie
2016-2018
Centre Hospitalier Universitaire de Caen
2016-2018
Thales (Canada)
2018
Abstract Background Previous studies reporting the causes of death in patients with severe COVID-19 have provided conflicting results. The objective this study was to describe and timing admitted intensive care unit (ICU). Methods We performed a retrospective eight ICUs across seven French hospitals. All consecutive adult (aged ≥ 18 years) ICU PCR-confirmed SARS-CoV-2 infection acute respiratory failure were included analysis. deaths reported based on medical records. Results From March 1,...
The aim of this study is to determine whether severe COVID-19 patients harbour a higher risk ICU-acquired pneumonia.This retrospective multicentre cohort comprised all consecutive admitted seven ICUs for pneumonia during the first surge in France. Inclusion criteria were laboratory-confirmed SARS-CoV-2 infection and requirement invasive mechanical ventilation 48 h or more. Control groups two historical cohorts mechanically ventilated ICU bacterial non-SARS-CoV-2 viral pneumonia. outcome...
Abstract Background Group A Streptococcus is responsible for severe and potentially lethal invasive conditions requiring intensive care unit (ICU) admission, such as streptococcal toxic shock-like syndrome (STSS). rebound of group (iGAS) infection after COVID-19-associated barrier measures has been observed in children. Several intensivists French adult ICUs have reported similar bedside impressions without objective data. We aimed to compare the incidence iGAS before COVID-19 pandemic,...
The uptake of mercury by microorganisms is a key step in the production methylmercury, biomagnifiable toxin. Mercury complexation low-molecular-weight (LMW) thiols can affect its bioavailability and thus methylmercury. Freshwater biofilms were sampled summer using artificial Teflon substrates submerged for over year to allow natural community colonization littoral zone Boreal Shield lake. Inside biofilms, concentrations different extracellular thiol species (thioglycolic acid,...
In the last five years, state-of-the-art in computer vision has improved greatly thanks to an increased use of deep convolutional neural networks (CNNs), advances graphical processing unit (GPU) acceleration and availability large labelled datasets such as ImageNet. Obtaining comprehensively ImageNet for ship classification remains a challenge. As result, we experiment with pre-trained CNNs based on Inception ResNet architectures perform classification. Instead training CNN using random...
Aphasia is frequent in stroke patients and associated with poor prognosis. However, characteristics determinants of vascular aphasias remain controversial. The aim this study was to evaluate aphasia at the acute stage admitted a unit.The performed 308 consecutively assessed standardized battery.Aphasia observed 207 patients; global nonclassified accounted for 50% aphasic syndromes stage, whereas classic (Wernicke's, Broca's, transcortical, subcortical aphasias) were less frequent. Age...
Liver abscess (LA) is a rare but potentially serious condition with high mortality rate. Current epidemiological data of LA patients requiring intensive care unit (ICU) admission are limited. This multicentre retrospective study included adults admitted to 24 ICUs in France between January 2010 and December 2020. Risk factors for were identified by multivariate analysis. A propensity score was used adjust confounders related the presence portal vein thrombosis. 335 enrolled. The median age...
Permafrost thaw ponds of the warming Eastern Canadian Arctic are major landscape constituents and often display high levels methylmercury (MeHg). We examined photodegradation potentials in high-dissolved organic matter (DOC) on Bylot Island (BYL) a low-DOC oligotrophic lake Cornwallis (Char Lake). In BYL, ambient MeHg photodemethylation (PD) rate over 48 h solar exposure was 6.1 × 10–3 m2 E–1, amended samples 9.3 E–1. contrast, Char Lake, PD only observed first 12 h, which suggests that may...
Unlike large dams which favor methylation of Hg in flooded soils over long periods, run-of-river are designed to flood a limited area and therefore not expected significantly affect mercury (Hg) cycling or carbon processing. We studied the cycles within food webs from several sectors along Saint-Maurice River, Quebec, Canada, that differ how they influenced by two other watershed disturbances. observed peak concentrations fish five-year postimpoundment, but these levels were reduced three...
Periphytic biofilms have the potential to greatly influence microbial production of neurotoxicant monomethylmercury in freshwaters although few studies simultaneously assessed periphyton mercury methylation and demethylation rates communities associated with these transformations. We performed a field study on from river affected by run-of-river power plants artificial wetlands boreal landscape (Québec, Canada).
Several studies report an increased susceptibility to SARS-CoV-2 infection in cancer patients. However, data the intensive care unit (ICU) are scarce.We aimed investigate association between active and mortality among patients requiring organ support ICU.In this ambispective study encompassing 17 hospitals France, we included all adult with admitted ICU. For each patient, 3 non as controls. Patients were matched at same ratio using inverse probability weighting approach based on a propensity...
Extracellular matrix of periphyton has complex structural and chemical composition regulating metal transfer within biofilms with consequences for to aquatic food webs. We investigated which species were retained in the loosely (LB) tightly bound (TB) fractions from three pristine lakes at different growth stages. measured fluorescent dissolved organic matter (FDOM) parallel factor analysis (PARAFAC) co-occurrence essential non-essential metals FDOM two fractions. The LB TB had distinct...
Run-of-river (ROR) power plants impound limited terrestrial areas compared to traditional hydropower with large reservoirs and are assumed have reduced impacts on mercury cycling. We conducted a study periphyton benthic communities from different habitats of the St. Maurice River (Québec, Canada) affected by two ROR their effect bioaccumulation biomagnification monomethylmercury (MMHg). Proportion total as MMHg reached maximum values about 2.9 times higher in flooded sites unflooded sites....
We conducted a prospective study to assess the impact of blood pump flow rate (BFR) on dialysis dose with low dialysate rate. Seventeen patients were observed for 3 short hemodialysis sessions in which only BFR was altered (300,350 and 450 mL/min). Kt/V urea increased from 0.54 ± 0.10 0.58 0.08 0.61 0.09 300, 400 mL/min. For same variations, reduction ratio (RR) β2microglobulin 0.40 0.07 0.45 0.06 0.48 RR phosphorus 0.46 0.1 0.49 0.07. In bivariate analysis accounting repeated observations,...
Abstract Introduction: Although early identified as a deadly infectious disease, the precise mortality rate of most severe forms COVID-19 is matter debate. To best our knowledge, no study investigated so far, causes that ultimately led to death well relation between timing and death. Material & Methods: We performed retrospective in eight ICU within French hospitals. All consecutive adult patients (aged≥ 18 years old) admitted with PCR-confirmed SARS-CoV-2 infection acute respiratory...
Pulsed phases thermography (PPT) is a well-known processing method of non-destructive testing (NDT) by infrared thermography. This based on the frequency analysis images obtained from pulsed The Fast Fourier Transform (FFT) generally used for this technique. Such faces important time aliasing problems. Particularly when slow cameras are and also in case inspection high thermal conductivity material like aluminum. Moreover, oddness phase function, which often interesting part response...