Understanding falls in progressive supranuclear palsy |
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| Institution: | 1. Cleveland Clinic Lou Ruvo Center for Brain Health, USA;2. University of California San Diego, Department of Neurosciences, USA;3. Anatechs, LLC, USA;4. Emory University, USA;5. Case Western Reserve University, USA;6. University of Alabama at Birmingham, USA;7. University of Maryland, USA;8. Rush University, USA;9. University of Colorado, USA;10. University of Utah, USA;11. Banner Sun Health Research Institute, USA;12. Morton and Gloria Shulman Movement Disorders Centre and the Edmond J Safra Program in Parkinson''s Research, Toronto Western Hospital, Canada;13. Baylor College of Medicine, USA;1. Department of Medicine, Division of Geriatric Medicine, Sir Mortimer B. Davis – Jewish General Hospital and Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada;2. Centre of Excellence on Longevity of McGill integrated University Health Network, Quebec, Canada;3. Faculty and Department of Medicine, Division of Experimental Medicine, McGill University, Montreal, Quebec, Canada;4. Department of Neurology, Geneva University Hospital and University of Geneva, Switzerland;5. Department of Neurology, Division of Cognitive & Motor Aging, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York, USA;6. Dr. Joseph Kaufmann Chair in Geriatric Medicine, Faculty of Medicine, McGill University, Montreal, Quebec, Canada;7. Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore;1. Movement Disorders Clinic, Second Dept. of Neurology, Attikon Hospital, University of Athens, Greece;2. Dept. of Movement Disorders, Hygeia Hospital, Athens, Greece;3. Neurology Clinic, Philipps University, Marburg, Germany;1. Department of Medicine, Division of Geriatric Medicine, Sir Mortimer B. Davis Jewish General Hospital and Lady Davis Institute for Medical Research, McGill University, Montreal, QC, Canada;2. Dr. Joseph Kaufmann Chair in Geriatric Medicine, Faculty of Medicine, McGill University, Montreal, QC, Canada;3. Centre of Excellence on Longevity of McGill Integrated University Health Network, QC, Canada;4. Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore;5. Faculty of Medicine, Department of Medicine, McGill University, Montreal, QC, Canada;6. Centre Hospitalier De l’Université De Montreal Research Center, Montreal, QC, Canada;7. Department of Medicine, University of Montreal, Montreal, QC, Canada;8. Division of Geriatric Medicine, McGill University Health Centre, Montreal, QC, Canada;9. Department of Neurology, Geneva University Hospital and University of Geneva, Geneva, Switzerland;1. Department of Electrical, Electronic and Information Engineering “Guglielmo Marconi”, University of Bologna, Bologna, Italy |
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| Abstract: | IntroductionProgressive supranuclear palsy (PSP) is characterized by frequent falls which worsen with disease progression, causing substantial morbidity and mortality. Few studies have investigated which factors contribute to falls in PSP, and all have involved few participants, thus lacking necessary statistical power. The aim of this study was to identify clinical parameters most significantly associated with increasing falls in PSP, using the largest sample of patients to date.MethodsComprehensive clinical data were collected from 339 not demented PSP patients meeting the NINDS-SPSP criteria, who were divided into two groups – Infrequent Fallers (IF; n = 118) with rare falls, and Frequent Fallers (FF; n = 221) who fell occasionally to multiple times a day. Of 198 clinical parameters, we hypothesized 38 to be correlated with an increasing risk of falls. These 38 parameters were analyzed via univariate regression analysis to determine the strength of their association with fall frequency. Unit odds ratios identified the magnitude with which each parameter resulted in an increasing risk of falls.ResultsTwenty-five of 38 parameters analyzed were significantly associated with fall frequency based on univariate analysis. Symptom duration, clinical measures of disease severity, and several motoric and oculomotor clinical parameters were associated with FF. Examined cognitive parameters and slowing of vertical saccades were not.ConclusionsThe clinical parameters identified as associated with increased frequency of falls improve our understanding of why they occur and may help identify not demented PSP patients at risk for increasing falls. |
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| Keywords: | Progressive supranuclear palsy Falls Parkinsonism ENGENE Understanding Balance Postural instability |
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