Full Text Journal Articles by
Author Isabelle Dufour

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Persistent frequent emergency department users with chronic conditions: A population-based cohort study.

Yohann Moanahere Chiu, Alain Vanasse, Josiane Courteau, Maud-Christine Chouinard, Marie-France Dubois, Nicole Dubuc, Nicolas Elazhary, Isabelle Dufour, Catherine Hudon,

BACKGROUND:Frequent emergency department users are patients cumulating at least four visits per year. Few studies have focused on persistent frequent users, who maintain their frequent user status for multiple consecutive years. This study targets an adult population with chronic conditions, and its aims are: 1) to estimate the prevalence of ... Read more >>

PLoS ONE (PloS one)
[2020, 15(2):e0229022]

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Risk of Frequent Emergency Department Use Among an Ambulatory Care Sensitive Condition Population: A Population-based Cohort Study.

Catherine Hudon, Josiane Courteau, Yohann M Chiu, Maud-Christine Chouinard, Marie-France Dubois, Nicole Dubuc, Nicolas Elazhary, Francois Racine-Hemmings, Isabelle Dufour, Alain Vanasse,

BACKGROUND:A small fraction of patients use a disproportionately large amount of emergency department (ED) resources. Identifying these patients, especially those with ambulatory care sensitive conditions (ACSC), would allow health care professionals to enhance their outpatient care. OBJECTIVE:The objectives of the study were to determine predictive factors associated with frequent ED ... Read more >>

Med Care (Medical care)
[2020, 58(3):248-256]

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Frequent emergency department use by older adults with ambulatory care sensitive conditions: A population-based cohort study.

Isabelle Dufour, Yohann Chiu, Josiane Courteau, Maud-Christine Chouinard, Nicole Dubuc, Catherine Hudon,

AIM:To identify factors associated with frequent emergency department (ED) use among older adults with ambulatory care sensitive conditions. METHODS:This was a retrospective cohort study using databases from the Régie de l'assurance maladie du Québec. We included community-dwelling individuals aged ≥65 years in the Province of Quebec (Canada), who consulted in ED ... Read more >>

Geriatr Gerontol Int (Geriatrics & gerontology international)
[2020, :]

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In-Plane Vibration of Hammerhead Resonators for Chemical Sensing Applications.

Luke A Beardslee, Christopher Carron, Kemal S Demirci, Jonathan Lehman, Steven Schwartz, Isabelle Dufour, Stephen M Heinrich, Fabien Josse, Oliver Brand,

Thermally excited and piezoresistively detected in-plane cantilever resonators have been previously demonstrated for gas- and liquid-phase chemical and biosensing applications. In this work, the hammerhead resonator geometry, consisting of a cantilever beam supporting a wider semicircular "head", vibrating in an in-plane vibration mode, is shown to be particularly effective for ... Read more >>

ACS Sens (ACS sensors)
[2020, 5(1):73-82]

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Factors associated with frequent use of emergency-department services in a geriatric population: a systematic review.

Isabelle Dufour, Maud-Christine Chouinard, Nicole Dubuc, Jérémie Beaudin, Sarah Lafontaine, Catherine Hudon,

BACKGROUND:Frequent geriatric users of emergency departments (EDs) constitute a small group of individuals accounting for a disproportionately high number of ED visits. In addition to overcrowding, this situation might result in a less appropriate response to health needs and negative health impacts. Geriatric patients turn to EDs for a variety ... Read more >>

BMC Geriatr (BMC geriatrics)
[2019, 19(1):185]

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Statistical tools used for analyses of frequent users of emergency department: a scoping review.

Yohann Chiu, François Racine-Hemmings, Isabelle Dufour, Alain Vanasse, Maud-Christine Chouinard, Mathieu Bisson, Catherine Hudon,

OBJECTIVE:Frequent users represent a small proportion of emergency department users, but they account for a disproportionately large number of visits. Their use of emergency departments is often considered suboptimal. It would be more efficient to identify and treat those patients earlier in their health problem trajectory. It is therefore essential ... Read more >>

BMJ Open (BMJ open)
[2019, 9(5):e027750]

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Application of Rubrene Air-Gap Transistors as Sensitive MEMS Physical Sensors.

Marco J Pereira, Micaela Matta, Lionel Hirsch, Isabelle Dufour, Alejandro Briseno, Sai Manoj Gali, Yoann Olivier, Luca Muccioli, Alfred Crosby, Cédric Ayela, Guillaume Wantz,

Micro-electromechanical systems (MEMS) made of organic materials have attracted efforts for the development a new generation of physical, chemical, and biological sensors, for which the electromechanical sensitivity is the current major concern. Here, we present an organic MEMS made of a rubrene single-crystal air-gap transistor. Applying mechanical pressure on the ... Read more >>

ACS Appl Mater Interfaces (ACS applied materials & interfaces)
[2018, 10(48):41570-41577]

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Integrated Electromechanical Transduction Schemes for Polymer MEMS Sensors.

Damien Thuau, Pierre-Henri Ducrot, Philippe Poulin, Isabelle Dufour, Cédric Ayela,

Polymer Micro ElectroMechanical Systems (MEMS) have the potential to constitute a powerful alternative to silicon-based MEMS devices for sensing applications. Although the use of commercial photoresists as structural material in polymer MEMS has been widely reported, the integration of functional polymer materials as electromechanical transducers has not yet received the ... Read more >>

Micromachines (Basel) (Micromachines)
[2018, 9(5):]

Cited: 2 times

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Engineering polymer MEMS using combined microfluidic pervaporation and micro-molding.

Damien Thuau, Cédric Laval, Isabelle Dufour, Philippe Poulin, Cédric Ayela, Jean-Baptiste Salmon,

In view of the extensive increase of flexible devices and wearable electronics, the development of polymer micro-electro-mechanical systems (MEMS) is becoming more and more important since their potential to meet the multiple needs for sensing applications in flexible electronics is now clearly established. Nevertheless, polymer micromachining for MEMS applications is ... Read more >>

Microsyst Nanoeng (Microsystems & nanoengineering)
[2018, 4:15]

Cited: 1 time

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Molecule-based microelectromechanical sensors.

Matias Urdampilleta, Cedric Ayela, Pierre-Henri Ducrot, Daniel Rosario-Amorin, Abhishake Mondal, Mathieu Rouzières, Pierre Dechambenoit, Corine Mathonière, Fabrice Mathieu, Isabelle Dufour, Rodolphe Clérac,

Incorporating functional molecules into sensor devices is an emerging area in molecular electronics that aims at exploiting the sensitivity of different molecules to their environment and turning it into an electrical signal. Among the emergent and integrated sensors, microelectromechanical systems (MEMS) are promising for their extreme sensitivity to mechanical events. ... Read more >>

Sci Rep (Scientific reports)
[2018, 8(1):8016]

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Screening tools to identify patients with complex health needs at risk of high use of health care services: A scoping review.

Valérie Marcoux, Maud-Christine Chouinard, Fatoumata Diadiou, Isabelle Dufour, Catherine Hudon,

Many people with chronic conditions have complex health needs often due to multiple chronic conditions, psychiatric comorbidities, psychosocial issues, or a combination of these factors. They are at high risk of frequent use of healthcare services. To offer these patients interventions adapted to their needs, it is crucial to be ... Read more >>

PLoS ONE (PloS one)
[2017, 12(11):e0188663]

Cited: 1 time

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Individual predictors of frequent emergency department use: a scoping review.

Cynthia Krieg, Catherine Hudon, Maud-Christine Chouinard, Isabelle Dufour,

A small proportion of patients use an excessively large amount of emergency care resources which often results in emergency department (ED) overcrowding, decreased quality of care and efficiency. There is a need to better identify these patients in order to target those who will benefit most from interventions adapted to ... Read more >>

BMC Health Serv Res (BMC health services research)
[2016, 16(1):594]

Cited: 16 times

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Effectiveness of case management interventions for frequent users of healthcare services: a scoping review.

Catherine Hudon, Maud-Christine Chouinard, Mireille Lambert, Isabelle Dufour, Cynthia Krieg,

OBJECTIVE:Frequent users of healthcare services are a vulnerable population, often socioeconomically disadvantaged, who can present multiple chronic conditions as well as mental health problems. Case management (CM) is the most frequently performed intervention to reduce healthcare use and cost. This study aimed to examine the evidence of the effectiveness of ... Read more >>

BMJ Open (BMJ open)
[2016, 6(9):e012353]

Cited: 11 times

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[The health care surrogate: the legal framework].

Véronique Desjardins, Isabelle Dufour,

Created around ten years ago, the possibility of nominating a health care surrogate has radically changed the relationship between the patient and healthcare professionals. A nominated person talks with the doctor and the nursing team in cases where the patient is unable to consent to care. However, such a system ... Read more >>

Soins Gerontol (Soins. Gerontologie)
[2012, (98):28-29]

Cited: 0 times

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Generalized model of resonant polymer-coated microcantilevers in viscous liquid media.

Russell Cox, Fabien Josse, Michael J Wenzel, Stephen M Heinrich, Isabelle Dufour,

Expressions describing the resonant frequency and quality factor of a dynamically driven, polymer-coated microcantilever in a viscous liquid medium have been obtained. These generalized formulas are used to describe the effects the operational medium and the viscoelastic coating have on the device sensitivity when used in liquid-phase chemical sensing applications. ... Read more >>

Anal. Chem. (Analytical chemistry)
[2008, 80(15):5760-5767]

Cited: 2 times

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Study of viscoelastic effect on the frequency shift of microcantilever chemical sensors.

Uttara Sampath, Stephen M Heinrich, Fabien Josse, Frédéric Lochon, Isabelle Dufour, Dominique Rebière,

Microcantilevers coated with a chemically sensitive layer are increasingly being used in chemical detection systems. The sensitive coating, often a polymer, absorbs specific molecules, which can be detected by monitoring the shift in the mechanical resonant frequency. Usually, the frequency shift resulting from molecular absorption is interpreted as a mass ... Read more >>

IEEE Trans Ultrason Ferroelectr Freq Control (IEEE transactions on ultrasonics, ferroelectrics, and frequency control)
[2006, 53(11):2166-2173]

Cited: 1 time

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Coupled determination of gravimetric and elastic effects on two resonant chemical sensors: love wave and microcantilever platforms.

Ludivine Fadel, Céline Zimmermann, Isabelle Dufour, Corinne Déjous, Dominique Rebière, Jacques Pistré,

The objective of this paper is to couple theoretical and experimental results from microcantilevers and Love-wave acoustic devices in order to identify and separate mass loading effects from elastic effects. This is important in the perspective of sensing applications. For that, a thin-film polymer is deposited on both resonant platforms. ... Read more >>

IEEE Trans Ultrason Ferroelectr Freq Control (IEEE transactions on ultrasonics, ferroelectrics, and frequency control)
[2005, 52(2):297-303]

Cited: 0 times

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