Publications by authors named "Riopelle R"

Purpose: Research shows that patients' perceptions of themselves and others, in addition to their understanding of the concept of gender, changes after traumatic brain injury (TBI). Little is known about gendered experiences in TBI and care delivery. This study aims to explore perceptions of gender through life experiences and interactions between adult patients with TBI and their informal caregivers.

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Background: Decision aids are patient-focused tools that have the potential to reduce the overuse of head computed tomography (CT) scans.

Objective: The objective of this study was to create a consensus among Canadian mild traumatic brain injury and emergency medicine experts on modifications required to adapt two American decision aids about head CT use for adult and paediatric mild traumatic brain injury to the Canadian context.

Methods: We invited 21 Canadian stakeholders and the two authors of the American decision aids to a Nominal Group Technique consensus meeting to generate suggestions for adapting the decision aids.

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Purpose: The purpose of this study was to explore rehabilitation clinicians' understanding of how sex and gender facilitate or hinder care provided to patients with traumatic brain injury (TBI).

Materials And Methods: Sixteen clinicians from various specialities, attending to patients with TBI from a large rehabilitation hospital in Ontario, Canada, were recruited using purposive sampling. Data was collected through semi-structured interviews and thematic analysis was used to identify reoccurring themes.

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Rationale, Aims, And Objectives: The Spinal Cord Injury Knowledge Mobilization Network is a pan-Canadian community of practice composed of seven rehabilitation hospitals. The goal of this network is to utilize implementation science processes to facilitate the adoption of best practice in spinal cord injury (SCI) rehabilitation. In addition to selecting specific practices for implementation, a key aspect of effective implementation is the engagement of stakeholders in decision-making processes.

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Traumatic brain injury (TBI) is the leading cause of death in the first half of life and a chronic disability for Canadians of all ages. Despite the recognized importance of TBI, there is no integrated national strategy for research and best practices in Canada. We therefore created the Canadian TBI Research Consortium (CTRC) to build an ideal model of collaboration between Canadian TBI researchers.

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Article Synopsis
  • The study surveys healthcare providers across the U.S. to examine how they deliver services to individuals with neurological conditions, focusing on criteria for admission, waitlist practices, and referral sources.
  • Approximately 60% of the providers serve either urban or rural areas specifically, while 40% cater to patients regardless of location; however, only a small percentage offer specialized services for conditions like dystonia and Tourette syndrome.
  • Results indicate a lack of diverse healthcare professionals, particularly in mental health, and many respondents apply strict exclusion criteria based on common comorbidities, which could leave patients with limited care options.
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Background: There is a shift toward making health care patient centered, whereby patients are part of medical decision-making and take responsibility for managing their health. Patient-reported outcomes (PROs) capture the patient voice and can be used to engage patients in medical decision-making.

Objective: The objective of this paper is to present important factors from patients', clinicians', researchers', and decision-makers' perspectives that influence successful adoption of PROs in clinical practice.

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This paper describes the current situation in Canada concerning the availability and use of prescription drugs for neurological conditions. We conducted semi-structured qualitative interviews with health care providers, administrators, community organization representatives, opinion leaders and policy makers. The analysis revealed three primary themes related to the availability of and access to prescription drugs to treat neurological conditions.

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Background: Persons with neurological conditions and their families face a number of challenges with the provision of health and community-based services. The purpose of this study was to understand the existing health and community service needs and gaps in care and to use this information to develop a model to specify factors and processes that may improve the quality of care and health and well-being for persons with neurological conditions.

Methods: We conducted semi-structured interviews with health care professionals, community-based non-health care professionals working with individuals with neurological conditions, and policy makers -from the Ministries of Health, Community and Social Services, Transportation and Education- across Canada.

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Background: Physicians treating patients in the vegetative state (VS) must deal with uncertainty in diagnosis and prognosis, as well as ethical issues. We examined whether physicians' attitudes toward medical and ethical challenges vary across two national medical practice settings.

Methods: A comparative survey was conducted among German and Canadian specialty physicians, based on a case vignette about the VS.

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Disorders of consciousness (DOC) are a family of related neurological syndromes characterized by deficits of varying degrees of wakefulness (e.g., sleep-wake cycles and arousal) or awareness (e.

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Background: Between 20-50% of those suffering a mild traumatic brain injury (MTBI) will suffer symptoms beyond 3 months or post-concussive disorder (PCD). Researchers in Sydney conducted a prospective controlled study which identified that bedside recordings of memory impairment together with recordings of moderate or severe pain could predict those who would suffer PCS with 80% sensitivity and specificity of 76%.

Primary Objective: This study is a cross-validation study of the Sydney predictive model conducted at Montreal General Hospital, Montreal, Canada.

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The care of chronically unconscious patients raises vexing medical, ethical, and social questions concerning diagnosis, prognosis, communication with family members, and decision making, including the withdrawal of life support. We provide updates on major controversies surrounding disorders of consciousness. Issues such as withdrawal of artificial nutrition and hydration - which had been considered "settled" by many in the medical, legal and ethical communities - have resurfaced under the pressure of social groups and religious authorities.

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Background: Regional networks have been recognized as an interesting model to support interdisciplinary and inter-organizational interactions that lead to meaningful care improvements. Existing communities of practice within the a regional network, the Montreal Stroke Network (MSN) offers a compelling structure to better manage the exponential growth of knowledge and to support care providers to better manage the complex cases they must deal with in their practices. This research project proposes to examine internal and external factors that influence individual and organisational readiness to adopt national stroke best practices and to assess the impact of an e-collaborative platform in facilitating knowledge translation activities.

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In an effort to assess and advance the community-based model of chronic care, we reviewed a contemporary spectrum of Canadian chronic disease management and prevention (CDMP) programs with a participatory audience of administrators, academics, professional and non-professional providers and patients. While many questions remain unanswered, several common characteristics of CDMP success were apparent. These included community-based partnerships with aligned goals; inter-professional and non-professional care, including patient self-management; measured and shared information on practices and outcomes; and visible leadership.

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Objective: Injury to the brain and spinal cord is one of the most catastrophic and costly occurrences in the Ontario health system. The objective of the present study was to evaluate the impact of past Ontario Neurotrauma Foundation (ONF) studentships and fellowships in terms of capacity building in the neurotrauma field in Ontario.

Method: An online, cross sectional survey amongst past recipients of studentships and fellowships that terminated prior to July 2005.

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In contrast to their slowed limb movements, individuals with Parkinson's disease (PD) produce rapid automatic eye movements to sensory stimuli and show an impaired ability to generate voluntary eye movements in cognitive tasks. Eighteen PD patients and 18 matched control volunteers were instructed to look either toward (pro-saccade) or away from (anti-saccade) a peripheral stimulus as soon as it appeared (immediate, gap and overlap conditions) or after a variable delay; or, they made sequential saccades to remembered targets after a variable delay. We found that PD patients made more express saccades (correct saccades in the latency range of 90-140 ms) in the immediate pro-saccade task, more direction errors (automatic pro-saccades) in the immediate anti-saccade task, and were less able to inhibit saccades during the delay period in all delay tasks.

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Parkinson's patients (PD) made pro- and antisaccades: In the no-delay condition, the target appeared concurrent with the GO signal. In the delay condition, the target appeared before the signal for movement. Second, we probed spatial working memory in PD.

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The neurotrophin nerve growth factor (NGF) binds to two receptor types: the tyrosine kinase receptor TrkA and the common neurotrophin receptor p75(NTR). Although many of the biological effects of NGF (such as neuronal growth and survival) are associated with TrkA activation, p75(NTR) also contributes to these activities by enhancing the action of TrkA when receptors are coexpressed. The NGF antagonist PD90780 [7-(benzolylamino)-4,9-dihydro-4-methyl-9-oxo-pyrazolo[5,1-b]quinazoline-2-carboxylic acid] interacts with NGF, preventing its binding to p75(NTR).

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Functional role(s) for the common neurotrophin receptor p75NTR in nerve growth factor (NGF) signaling have yet to be fully elucidated. Many studies have demonstrated that p75NTR can enhance nerve growth factor-induced survival mediated via the trkA receptor. In addition, newly identified pathways for p75NTR signaling have included distinct p75NTR-specific and trk-independent effects which generally appear to be pro-apoptotic.

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Corticotropin-releasing hormone (CRH), known as a key regulator of the hypothalamic-pituitary-adrenal axis response to stress, elicits its biological effects by binding to two membrane receptors (CRH-R1 and CRH-R2). The present studies examined the presence of functional expression of CRH receptors in cultured microglia of rat. CRH-R1 mRNA and protein were detected by reverse transcriptase polymerase chain reaction (RT-PCR), western blotting and receptor chemical cross-linking assay in cultured microglia.

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Tourette's syndrome is characterized by involuntary tics and, although the underlying pathogenesis and pathophysiology of Tourette's syndrome remains unclear, it is suspected that basal ganglia structures are involved. The basal ganglia also play an important role in the control of saccadic eye movements and we therefore hypothesize that Tourette's syndrome patients have abnormal control of saccadic eye movements. In this study, 10 subjects with Tourette's syndrome and 10 age- and sex-matched controls performed four different oculomotor paradigms requiring the execution and/or suppression of reflexive and/or voluntary saccades.

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