Plaintes cognitives et troubles cognitifs objectifs chez des patients atteints de la maladie de Parkinson idiopathique

Authors: Plourde, Marika
Advisor: Simard, Martine
Abstract: Objectives: Subjective cognitive complaints guide clinicians in the assessment of objectives cognitive deficits and can provide vital additional information in the clinical setting. It is therefore important to evaluate its clinical value, and the awareness of the patients to their cognitive difficulties, in order to support the diagnosis. The overall objective of this study is to investigate cognitive, psychological and behavioral as well as motor, sociodemographic and clinical variables in relationship to subjective cognitive complaints in patients with Parkinson's Disease (PD). Methods: Data from 50 patients with PD at three levels of cognitive functioning, i.e. cognitively intact (CI), mild cognitive impairment (MCI) and dementia, were analyzed. A model was created using the LASSO method to determine the variables most correlated with self-reported executive complaint measured with the Dysexecutive Questionnaire (DEX). The memory complaint was analyzed according to the diagnostic groups and objective memory deficits. Results: Score on the Apathy Scale, rigidity as a dominant symptom and executive deficits were the variables the most correlated with the executive complaint. The Stroop test (inhibition condition) correlated significantly with the DEX complaint score. There was no difference between CI, MCI and dementia patients regarding the objective score in episodic memory and the memory complaint. Conclusions: Patients with PD seem to be aware of their difficulties with respect to executive functions. Tests measuring inhibition and mental flexibility, such as the Stroop test, shall be added to neuropsychological protocol when assessing PD patients. The association between symptoms of apathy, rigidity and executiexecutive complaints warrant further research.
Document Type: Thèse de doctorat
Issue Date: 2018
Open Access Date: 19 September 2018
Grantor: Université Laval
Collection:Thèses et mémoires

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