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Feasibility of Using Prism Adaptation to Treat Spatial Neglect and Motor Function in Stroke

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02419222
Recruitment Status : Completed
First Posted : April 17, 2015
Last Update Posted : August 21, 2017
Information provided by (Responsible Party):
Kessler Foundation

Brief Summary:
This research project is a study designed to address both motor and cognitive changes after stroke. Treatment for SN is elusive however there is support for prism adaptation treatment (PAT). Therapists need to know more about the effects of this treatment and if it is feasible in a group of stroke survivors with multiple lesions because these are the patients they are treating in the clinical setting. Also, it has not been investigated that using PAT to remediate SN will then as a result increase spontaneous UE movement of the weak limb.

Condition or disease Intervention/treatment Phase
Stroke Behavioral: Prism Adaptation Not Applicable

Detailed Description:
This research project is a study designed to address both motor and cognitive changes after stroke, two common stroke disabilities. For example: two third of patients reported loss of upper limb function as a major problem after stroke and spatial neglect occurs in more than 350,000 US right hemisphere stroke survivors annually. These two impairments if not treated, lead to immediate impairment in basic life activities, long term functional disability, increased risk for falls and increased healthcare costs. The literature displays many strong research studies that trialed the use of multiple treatment approaches to remediate spatial neglect, including prism adaptation treatment (PAT), resulting in positive results. Similar findings result for treatment studies that attempt to remediate the upper extremity (UE). However, in all group of patients that were tested in these studies (both for spatial neglect and UE dysfunction) only had one stroke and past medical histories that were unremarkable. Rehabilitation professionals help clients that have had all types of strokes achieve improved quality of life by helping to increase independence by remediating impairment. In addition, these professionals need to know more about the effects of PAT in stroke survivors with multiple lesions because these are patients commonly being treated in the clinical setting. Also, it has not been investigated whether using PAT, a very promising and easy to administer treatment, to remediate spatial neglect will also increase spontaneous UE movement of the limb affected by the stroke because of an influence on motor-intentional aiming errors. Thus, in this pilot research proposal, the researcher intends to first investigate the feasibility of this two week treatment on stroke survivors that have had multiple lesions and second verify if PAT will improve spatial neglect and jointly increase spontaneous movement of the UE.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 30 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Feasibility of Using Prism Adaptation to Treat Spatial Neglect and Motor Function in Stroke Survivors With Multiple Lesions
Study Start Date : January 2015
Actual Primary Completion Date : December 2016
Actual Study Completion Date : December 2016

Arm Intervention/treatment
Experimental: Prism Adaptation
Prism Adaptation Treatment is 20 minutes long, administered 10 consecutive days
Behavioral: Prism Adaptation
PAT uses wedged prism lenses to displace the entire visual field horizontally to the left or right (depending on the orientation of the base of the prism). The left-base prism lenses (thicker on the left) shift the entire visual field to the right. The result is a curving reaching trajectory, aiming toward the image location (right to the actual location) and then corrected toward the actual location. After several reaching movement, the coordinates of motor and visual systems are aligned, which in other words, is that the motor output adapts to the visual input, and thus the reaching trajectory is straight ahead to the object. This visually-guided goal-oriented movement is essential in PAT.

Primary Outcome Measures :
  1. CBS via Kessler Foundation Neglect Assessment Process [ Time Frame: 30 minutes ]
    The CBS is a 10-item scale for evaluating the severity of spatial neglect (Azouviet al., 1996). Thus, the CBS captures the heterogeneity of spatial neglect in the most functional way. The items include limb awareness, personal belongings, dressing, grooming, gaze orientation, auditory attention, navigation, collisions, eating, cleaning after a meal. Each item is scored from 0-3. Based on a CBS total score (range 0-30), a stroke survivor with unilateral brain damage can be categorized as no neglect (CBS=0), mild (CBS= 1-10), moderate (CBS= 11-20), or severe (CBS= 20-30). In 2012, Chen et al. addressed this obstacle by standardizing the method to use the CBS reliably in the clinic and trademarked the process to use in conjunction with the CBS as the Kessler Foundation Neglect Assessment Process (CBS via KF-NAP™).

Secondary Outcome Measures :
  1. Behavior Inattention Test [ Time Frame: 15 minutes ]
    The Behavior Inattention Test is a validated, widely used battery for the assessment of neglect. It has multiple subtests in the conventional battery, for example line crossing and letter cancelation tests . The conventional test battery will be used; the total score is out of 146 with a cut off score of 128 for spatial neglect (Wilson, et al. 1987).

  2. Motor Activity Log [ Time Frame: 15 minutes ]
    The Motor Activity Log, a structured interview, will be used to assess how the patient feels they use their arm during specific activities (Uswatte, Taub, Morris, Vignolo, McCulloch, 2005). This will be the outcome measure used to determine spontaneous movement.

  3. Functional Independence Measure [ Time Frame: 30 minutes ]
    Functional Independence Measure (FIM) is a reliable and valid assessment of function and the gold standard in rehabilitation facilities. It consists of 18 items assessing the level of independence in two domains; motor and cognitive. Each item is scored from 1 (maximal) to 7 (independent) (Ottenbacher, et al 1996).

  4. Wolf Motor Function Test [ Time Frame: 45 min ]
    The WMFT is a quantitative measure of upper extremity motor ability through timed and functional tasks (Wolf et al., 1989). There are 21 items with 3 parts (time, functional ability and strength). The person's less affected arm is examined followed by the most affected side. The maximum score is a 75.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 90 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Between the ages of 18 and 90.
  • New stroke on the right side of the brain.
  • Has an UE impairment of the arm affected by the stroke (WMFT score of less than 75).
  • Has the presence of spatial neglect (greater than 1 on the KF-NAP).
  • Is able to give informed consent.
  • Past medical history includes having had a stroke or more than one. This can be ischemic or hemorrhagic, and on either side of the brain.

Exclusion Criteria:

  • Is under the age of 18.
  • Has severe communication deficit.
  • Has a left brain stroke as the primary diagnosis and/or the primary diagnosis is anything other than stroke.
  • Is blind in one or both eyes.
  • Is not staying at the inpatient rehabilitation hospital
  • Has a cognitive impairment that inhibits their ability to recall information.
  • Has severely impaired upper extremity function in bilateral arms (cannot participate in the prism task).

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02419222

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United States, New Jersey
Kessler Insitute for Rehabilitaiton
Saddle Brook, New Jersey, United States, 07663
Kessler Institute for Rehabiltiation
West Orange, New Jersey, United States, 07052
Sponsors and Collaborators
Kessler Foundation
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Principal Investigator: Kimberly P Hreha, MS Kessler Foundation

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Responsible Party: Kessler Foundation Identifier: NCT02419222     History of Changes
Other Study ID Numbers: R-853-14
First Posted: April 17, 2015    Key Record Dates
Last Update Posted: August 21, 2017
Last Verified: August 2017

Additional relevant MeSH terms:
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Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Vascular Diseases
Cardiovascular Diseases