Alessandro Dinoto1, Sara Baldini2, Maria Elisa Morelli2, Fulvio Pasquin2, Alessio Bratina2, Antonio Bosco2, Arianna Sartori2, Paolo Manganotti2. 1. Neurology Unit, Department of Medical, Surgical and Health Sciences, Cattinara University Hospital, ASUGI, University of Trieste, Strada di Fiume 447, 34149, Trieste, Italy. alessandro.dinoto@hotmail.it. 2. Neurology Unit, Department of Medical, Surgical and Health Sciences, Cattinara University Hospital, ASUGI, University of Trieste, Strada di Fiume 447, 34149, Trieste, Italy.
Abstract
BACKGROUND: Fatigue is a common, yet disabling, symptom in patients with multiple sclerosis (PwMS). Fatigue has shown to be associated with self-reported autonomic nervous system (ANS) symptoms, particularly for cognitive fatigue; however, the question whether ANS involvement is related to cognitive impairment has never been addressed. We performed a study to unveil the complex relationship between fatigue, ANS symptoms, and cognitive impairment. METHODS: We prospectively recruited early PwMS that were tested with Brief International Cognitive Assessment for Multiple Sclerosis (BICAMS), State-Trait Anxiety Inventory (STAI), Beck Depression Inventory (BDI), Modified Fatigue Impact Scale (MFIS) and Composite Autonomic Symptoms Scale-31 (COMPASS-31) scale. We performed a comparison between fatigued and non-fatigued patients and between cognitive unimpaired and impaired patients. We evaluated the association of COMPASS-31, MFIS, BDI, STAI, and BICAMS scores, and the analysis was repeated for each scale's sub-scores. A multivariable analysis was performed to elucidate predictors of fatigue. RESULTS: Forty-four patients were recruited. Fatigued patients had higher COMPASS-31 total, orthostatic intolerance, secretomotor, and pupillomotor scores. No differences in fatigue and ANS symptoms were found between cognitive impaired and unimpaired patients. MFIS total score correlated with STAI state (p = 0.002) and trait (p < 0.001), BDI (p < 0.001), COMPASS-31 total (p < 0.001), orthostatic intolerance (p < 0.001), pupillomotor scores (p = 0.006). Multivariable analysis showed that BDI (p < 0.001) and COMPASS-31 (p = 0.021) predicted MFIS score. Sub-scores analysis showed that orthostatic intolerance has a relevant role in fatigue. CONCLUSION: ANS symptoms are closely related with fatigue. Orthostatic intolerance may have a predominant role. Cognitive impairment seems not to be associated with ANS symptoms.
BACKGROUND:Fatigue is a common, yet disabling, symptom in patients with multiple sclerosis (PwMS). Fatigue has shown to be associated with self-reported autonomic nervous system (ANS) symptoms, particularly for cognitive fatigue; however, the question whether ANS involvement is related to cognitive impairment has never been addressed. We performed a study to unveil the complex relationship between fatigue, ANS symptoms, and cognitive impairment. METHODS: We prospectively recruited early PwMS that were tested with Brief International Cognitive Assessment for Multiple Sclerosis (BICAMS), State-Trait Anxiety Inventory (STAI), Beck Depression Inventory (BDI), Modified Fatigue Impact Scale (MFIS) and Composite Autonomic Symptoms Scale-31 (COMPASS-31) scale. We performed a comparison between fatigued and non-fatiguedpatients and between cognitive unimpaired and impaired patients. We evaluated the association of COMPASS-31, MFIS, BDI, STAI, and BICAMS scores, and the analysis was repeated for each scale's sub-scores. A multivariable analysis was performed to elucidate predictors of fatigue. RESULTS: Forty-four patients were recruited. Fatiguedpatients had higher COMPASS-31 total, orthostatic intolerance, secretomotor, and pupillomotor scores. No differences in fatigue and ANS symptoms were found between cognitive impaired and unimpaired patients. MFIS total score correlated with STAI state (p = 0.002) and trait (p < 0.001), BDI (p < 0.001), COMPASS-31 total (p < 0.001), orthostatic intolerance (p < 0.001), pupillomotor scores (p = 0.006). Multivariable analysis showed that BDI (p < 0.001) and COMPASS-31 (p = 0.021) predicted MFIS score. Sub-scores analysis showed that orthostatic intolerance has a relevant role in fatigue. CONCLUSION: ANS symptoms are closely related with fatigue. Orthostatic intolerance may have a predominant role. Cognitive impairment seems not to be associated with ANS symptoms.
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