Nelson Hwynn
Research Subjects
Research Interests
Nelson Hwynn has a total of 25 co-authors. Here are the top co-authors by number of shared publications:
- Michael Scott Okun
University of Florida
4 shared publications - Charles E. Jacobson
Department of Neurology, University of Florida, Gainesville, Florida, USA
3 shared publications - Ihtsham Ul Haq
Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA
3 shared publications Irene A. Malaty
University of Florida Health Center for Movement Disorders and Neurorestoration, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
3 shared publicationsAndrew S. Resnick
University of Florida Center for Movement Disorders and Neurorestoration, University of Florida, Gainesville, FL 32607, USA
2 shared publicationsGenko Oyama
University of Florida Center for Movement Disorders and Neurorestoration, University of Florida, Gainesville, FL 32607, USA
2 shared publications
Latest Publications
- Open Access
- 19 May 2015
- Published by Wiley in Parkinson's Disease
- Vol. 2015, 1-6
Person-Centered Care in the Home Setting for Parkinson’s Disease: Operation House Call Quality of Care Pilot Study
Objective. (1) To evaluate the feasibility of implementing and evaluating a home visit program for persons with Parkinson’s disease (PD) in a rural setting. (2) To have movement disorders fellows coordinate and manage health care delivery.Background. The University of Florida, Center for Movement Disorders and Neurorestoration established Operation House Call to serve patients with PD who could not otherwise afford to travel to an expert center or to pay for medical care. PD is known to lead to significant disability, frequent hospitalization, early nursing home placement, and morbidity.Methods. This was designed as a quality improvement project. Movement disorders fellows travelled to the home(s) of underserved PD patients and coordinated their clinical care. The diagnosis of Parkinson’s disease was confirmed using standardized criteria, and the Unified Parkinson’s Disease Rating Scale was performed and best treatment practices were delivered.Results. All seven patients have been followed up longitudinally every 3 to 6 months in the home setting, and they remain functional and independent. None of the patients have been hospitalized for PD related complications. Each patient has a new updatable electronic medical record. All Operation House Call cases are presented during video rounds for the interdisciplinary PD team to make recommendations for care (neurology, neurosurgery, neuropsychology, psychiatry, physical therapy, occupational therapy, speech therapy, and social work). One Operation House Call patient has successfully received deep brain stimulation (DBS).Conclusion. This program is a pilot program that has demonstrated that it is possible to provide person-centered care in the home setting for PD patients. This program could provide a proof of concept for the construction of a larger visiting physician or nurse program.
- 19 May 2015
- Published by Wiley in Parkinson's Disease
- Vol. 2015, 1-6
Open AccessPerson-Centered Care in the Home Setting for Parkinson’s Disease: Operation House Call Quality of Care Pilot Study
Objective. (1) To evaluate the feasibility of implementing and evaluating a home visit program for persons with Parkinson’s disease (PD) in a rural setting. (2) To have movement disorders fellows coordinate and manage health care delivery.Background. The University of Florida, Center for Movement Disorders and Neurorestoration established Operation House Call to serve patients with PD who could not otherwise afford to travel to an expert center or to pay for medical care. PD is known to lead to significant disability, frequent hospitalization, early nursing home placement, and morbidity.Methods. This was designed as a quality improvement project. Movement disorders fellows travelled to the home(s) of underserved PD patients and coordinated their clinical care. The diagnosis of Parkinson’s disease was confirmed using standardized criteria, and the Unified Parkinson’s Disease Rating Scale was performed and best treatment practices were delivered.Results. All seven patients have been followed up longitudinally every 3 to 6 months in the home setting, and they remain functional and independent. None of the patients have been hospitalized for PD related complications. Each patient has a new updatable electronic medical record. All Operation House Call cases are presented during video rounds for the interdisciplinary PD team to make recommendations for care (neurology, neurosurgery, neuropsychology, psychiatry, physical therapy, occupational therapy, speech therapy, and social work). One Operation House Call patient has successfully received deep brain stimulation (DBS).Conclusion. This program is a pilot program that has demonstrated that it is possible to provide person-centered care in the home setting for PD patients. This program could provide a proof of concept for the construction of a larger visiting physician or nurse program.
- Open Access
- 1 January 2011
- Published by Wiley in Parkinson's Disease
- Vol. 2011, 1-4
The Frequency of Nonmotor Symptoms among Advanced Parkinson Patients May Depend on Instrument Used for Assessment
Background. Nonmotor symptoms (NMS) of Parkinson's disease (PD) may be more debilitating than motor symptoms. The purpose of this study was to determine the frequency and corecognition of NMS among our advanced PD cohort (patients considered for deep brain stimulation (DBS)) and caregivers.Methods. NMS-Questionnaire (NMS-Q), a self-administered screening questionnaire, and NMS Assessment-Scale (NMS-S), a clinician-administered scale, were administered to PD patients and caregivers.Results. We enrolled 33 PD patients (23 males, 10 females) and caregivers. The most frequent NMS among patients using NMS-Q were gastrointestinal (87.9%), sleep (84.9%), and urinary (72.7%), while the most frequent symptoms using NMS-S were sleep (90.9%), gastrointestinal (75.8%), and mood (75.8%). Patient/caregiver scoring correlations for NMS-Q and NMS-S were 0.670 () and 0.527 (), respectively.ConclusionThe frequency of NMS among advanced PD patients and correlation between patients and caregivers varied with the instrument used. The overall correlation between patient and caregiver was greater with NMS-Q than NMS-S.
- 1 January 2011
- Published by Wiley in Parkinson's Disease
- Vol. 2011, 1-4
Open AccessThe Frequency of Nonmotor Symptoms among Advanced Parkinson Patients May Depend on Instrument Used for Assessment
Background. Nonmotor symptoms (NMS) of Parkinson's disease (PD) may be more debilitating than motor symptoms. The purpose of this study was to determine the frequency and corecognition of NMS among our advanced PD cohort (patients considered for deep brain stimulation (DBS)) and caregivers.Methods. NMS-Questionnaire (NMS-Q), a self-administered screening questionnaire, and NMS Assessment-Scale (NMS-S), a clinician-administered scale, were administered to PD patients and caregivers.Results. We enrolled 33 PD patients (23 males, 10 females) and caregivers. The most frequent NMS among patients using NMS-Q were gastrointestinal (87.9%), sleep (84.9%), and urinary (72.7%), while the most frequent symptoms using NMS-S were sleep (90.9%), gastrointestinal (75.8%), and mood (75.8%). Patient/caregiver scoring correlations for NMS-Q and NMS-S were 0.670 () and 0.527 (), respectively.ConclusionThe frequency of NMS among advanced PD patients and correlation between patients and caregivers varied with the instrument used. The overall correlation between patient and caregiver was greater with NMS-Q than NMS-S.
- Open Access
- 1 January 2011
- Published by Wiley in Parkinson's Disease
- Vol. 2011, 1-4
Effect of Deep Brain Stimulation on Parkinson's Nonmotor Symptoms following Unilateral DBS: A Pilot Study
Parkinson’s disease (PD) management has traditionally focused largely on motor symptoms. Deep brain stimulation (DBS) of the subthalamic nucleus (STN) and globus pallidus internus (GPi) are effective treatments for motor symptoms. Nonmotor symptoms (NMSs) may also profoundly affect the quality of life. The purpose of this pilot study was to evaluate NMS changes pre- and post-DBS utilizing two recently developed questionnaires.Methods. NMS-Q (questionnaire) and NMS-S (scale) were administered to PD patients before/after unilateral DBS (STN/GPi targets).Results. Ten PD patients (9 STN implants, 1 GPi implant) were included. The three most frequent NMS symptoms identified utilizing NMS-Q in pre-surgical patients were gastrointestinal (100%), sleep (100%), and urinary (90%). NMS sleep subscore significantly decreased (−1.6 points ± 1.8, ). The three most frequent NMS symptoms identified in pre-surgical patients using NMS-S were gastrointestinal (90%), mood (80%), and cardiovascular (80%). The largest mean decrease of NMS scores was seen in miscellaneous symptoms (pain, anosmia, weight change, and sweating) (−7 points ± 8.7), and cardiovascular/falls (−1.9, ).Conclusion. Non-motor symptoms improved on two separate questionnaires following unilateral DBS for PD. Future studies are needed to confirm these findings and determine their clinical significance as well as to examine the strengths/weaknesses of each questionnaire/scale.
- 1 January 2011
- Published by Wiley in Parkinson's Disease
- Vol. 2011, 1-4
Open AccessEffect of Deep Brain Stimulation on Parkinson's Nonmotor Symptoms following Unilateral DBS: A Pilot Study
Parkinson’s disease (PD) management has traditionally focused largely on motor symptoms. Deep brain stimulation (DBS) of the subthalamic nucleus (STN) and globus pallidus internus (GPi) are effective treatments for motor symptoms. Nonmotor symptoms (NMSs) may also profoundly affect the quality of life. The purpose of this pilot study was to evaluate NMS changes pre- and post-DBS utilizing two recently developed questionnaires.Methods. NMS-Q (questionnaire) and NMS-S (scale) were administered to PD patients before/after unilateral DBS (STN/GPi targets).Results. Ten PD patients (9 STN implants, 1 GPi implant) were included. The three most frequent NMS symptoms identified utilizing NMS-Q in pre-surgical patients were gastrointestinal (100%), sleep (100%), and urinary (90%). NMS sleep subscore significantly decreased (−1.6 points ± 1.8, ). The three most frequent NMS symptoms identified in pre-surgical patients using NMS-S were gastrointestinal (90%), mood (80%), and cardiovascular (80%). The largest mean decrease of NMS scores was seen in miscellaneous symptoms (pain, anosmia, weight change, and sweating) (−7 points ± 8.7), and cardiovascular/falls (−1.9, ).Conclusion. Non-motor symptoms improved on two separate questionnaires following unilateral DBS for PD. Future studies are needed to confirm these findings and determine their clinical significance as well as to examine the strengths/weaknesses of each questionnaire/scale.
- Open Access
- 13 August 2010
- Published by S. Karger AG in Stereotactic and Functional Neurosurgery
- Vol. 88 (5) , 329-333
Differential Response of Dystonia and Parkinsonism following Globus Pallidus Internus Deep Brain Stimulation in X-Linked Dystonia-Parkinsonism (Lubag)
Background: X-linked dystonia-parkinsonism (XDP; DYT3; Lubag) is an adult-onset hereditary progressive dystonia/parkinsonism which is typically minimally responsive to pharmacological treatment. Case Report: We report a 63- year-old man with a diagnosis of XDP who underwent bilateral globus pallidus internus deep brain stimulator (GPi-DBS) placement. His course initially began with right hand tremor and dystonia at age 57 and progressed to also include bradykinesia and rigidity. The patient tolerated the procedure without significant complications. GPi-DBS improved his right hand dystonia, but did not significantly improve his parkinsonism. Conclusion: DBS may be a therapeutic option for select cases of XDP, but its specificindications must be carefully discussed, as the available cases have had mixed responses. Whether other targets may be more effective is not known.
- 13 August 2010
- Published by S. Karger AG in Stereotactic and Functional Neurosurgery
- Vol. 88 (5) , 329-333
Open AccessDifferential Response of Dystonia and Parkinsonism following Globus Pallidus Internus Deep Brain Stimulation in X-Linked Dystonia-Parkinsonism (Lubag)
Background: X-linked dystonia-parkinsonism (XDP; DYT3; Lubag) is an adult-onset hereditary progressive dystonia/parkinsonism which is typically minimally responsive to pharmacological treatment. Case Report: We report a 63- year-old man with a diagnosis of XDP who underwent bilateral globus pallidus internus deep brain stimulator (GPi-DBS) placement. His course initially began with right hand tremor and dystonia at age 57 and progressed to also include bradykinesia and rigidity. The patient tolerated the procedure without significant complications. GPi-DBS improved his right hand dystonia, but did not significantly improve his parkinsonism. Conclusion: DBS may be a therapeutic option for select cases of XDP, but its specificindications must be carefully discussed, as the available cases have had mixed responses. Whether other targets may be more effective is not known.