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Prism Adaptation in Left Brain Stroke

One Treatment, Multiple Targets: Prism Adaptation and Left Brain Stroke Rehabilitation

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04387162
Enrollment
13
Registered
2020-05-13
Start date
2021-02-15
Completion date
2023-07-31
Last updated
2025-04-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Aphasia, Spatial Neglect, Stroke

Keywords

aphasia, spatial neglect, rehabilitation

Brief summary

Of the 15,000 Veterans who are hospitalized for stroke each year more than half experience spatial and motor impairments and pain. Spatial-motor-sensory problems limit functioning and independence, which is costly to Veterans, their families, and society. Currently, spatial-motor-sensory problems are targeted using different treatments. However, there is a treatment that has shown promise in simultaneously targeting spatial function, motor function and pain in right-brain stroke. The investigators propose to investigate the feasibility of using adapted spatial-motor sensory assessment and treatment procedures for Veterans with left-brain stroke who have language and cognitive impairment. The next step will be to conduct a large-scale study focused on this multi-target treatment for more efficient and effective stroke rehabilitation. The investigators expect this line of research to increase functioning, independence and quality of life in Veteran stroke survivors.

Detailed description

The functional disability experienced by Veterans after stroke, and the limited rehabilitation resources available, highlight the importance of identifying feasible treatments acting on more than one recovery target. Currently, there are separate and modality-specific treatment pathways for cognitive and motor impairments. These modality-specific treatment pathways lead to fragmentation of care, and under-identification and under-treatment of invisible disabilities, such as spatial neglect, aphasia and pain. The result is longer hospital stays, greater risk of falls, and poor functional outcomes. Employing a treatment that simultaneously addresses multiple targets will ensure that the investigators provide the needed care for \>50% of post-stroke Veterans who have both visible and invisible disabilities, during the critical post-acute period of recovery. Prism adaptation treatment (PAT) is a 10-day regimen reported to be inexpensive, replicable and effective for treatment of spatial neglect, and studies have demonstrated that it also enhances everyday activities and motor recovery and reduces chronic post-stroke pain in patients with right brain stroke. Additionally, brain mapping methods have shown that in patients with right brain stroke, those with frontal lesions respond optimally to PAT. No studies have investigated PAT in left-brain stroke patients with language and cognitive impairment. To address this research gap, the investigators will address the following aims: Aim 1: To demonstrate the feasibility of adapted PAT procedures in patients with aphasia and memory impairment. . Aim 2: To demonstrate the feasibility of adapted methods for assessing spatial and motor function and pain in patients with aphasia and memory impairment. Aim 3: To demonstrate the feasibility of using information about lesion location from the radiology report to classify frontal vs. nonfrontal lesions.

Interventions

Spatial retraining treatment

Sponsors

VA Office of Research and Development
Lead SponsorFED

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)

Masking description

Neurologist will conduct blinded classification of frontal or nonfrontal lesions

Intervention model description

Multiple baseline, delayed treatment design

Eligibility

Sex/Gender
ALL
Age
18 Years to 89 Years
Healthy volunteers
No

Inclusion criteria

* 1-3 months post-stroke, entering outpatient treatment * proficient English speakers * experiencing moderate functional disability as measured by Functional Independence Measure (FIM), observational or telephone-administered FONE-FIM * experiencing aphasia as determined by a Western Aphasia Battery Aphasia Quotient and memory impairment as determined by the Brief Visuospatial Memory Test- Revised, the Hopkins Verbal Learning Test- Revised or digit span forward and backward * able to provide informed consent to participate, using aphasia-accessible process, as needed.

Exclusion criteria

* History of brain conditions other than left brain stroke, including clinical right brain pathology.

Design outcomes

Primary

MeasureTime frameDescription
Client Satisfaction QuestionnaireImmediately following the two-week treatment (study week 3 in immediate group, study week 5 in delayed group)Assessment of satisfaction and perceived value of Prism Adaptation Treatment; scores range from 8-32, with higher scores indicating greater satisfaction
Credibility/Expectancy QuestionnaireImmediately following the two-week treatment (study week 3 in immediate group, study week 5 in delayed group)Assessment of whether Prism Adaptation Treatment is believable, convincing and logical (credibility) and the expectations for treatment-induced improvement (expectancy); two rating scales with one scale ranging from 1-9 and from 0%-100%, with higher scores indicating greater credibility and expectancy.
Barthel IndexWeekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)Assessment of functional disability by activities of daily living; scores range from 0-100, with higher score indicating greater independence and less functional disability
Functional Independence MeasureWeekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)Assessment of cognitive and motor function; scores range from 18-126, with a higher score indicating greater functional independence
Behavioral Inattention Test- Conventional SubtestWeekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)Assessment of spatial neglect; scores range from 0-146, with lower scores indicating more severe spatial neglect
Catherine Bergego Scale Via the Kessler Foundation Neglect Assessment ProcessWeekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)Assessment of spatial neglect; scores range from 0-30, with higher scores indicating more severe spatial neglect
Wolf Motor Function TestWeekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)Assessment of motor function; scores range from 0-75, with higher scores indicating less impairment in motor function
Defense and Veterans Pain Rating ScaleWeekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)Assessment of pain; scores range from 0-10, with higher scores indicating more severe pain
Classification of Lesion LocationBaselineAssessment of whether lesion is frontal or nonfrontal

Countries

United States

Participant flow

Pre-assignment details

Eight participants were consented into the study to complete screening procedures and ultimately did not meet eligibility criteria. These eight participants were not assigned to a study group.

Participants by arm

ArmCount
Immediate
Participants will enter treatment after one week baseline Prism Adaptation Treatment: Spatial retraining treatment
3
Delayed
Participants will enter treatment after two week baseline Prism Adaptation Treatment: Spatial retraining treatment
2
Total5

Baseline characteristics

CharacteristicImmediateTotalDelayed
Age, Continuous68.3 years
STANDARD_DEVIATION 9.1
62.4 years
STANDARD_DEVIATION 10.5
53.5 years
STANDARD_DEVIATION 3.5
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
1 Participants3 Participants2 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
2 Participants2 Participants0 Participants
Region of Enrollment
United States
3 Participants5 Participants2 Participants
Sex: Female, Male
Female
1 Participants2 Participants1 Participants
Sex: Female, Male
Male
2 Participants3 Participants1 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 30 / 2
other
Total, other adverse events
0 / 30 / 2
serious
Total, serious adverse events
0 / 30 / 2

Outcome results

Primary

Barthel Index

Assessment of functional disability by activities of daily living; scores range from 0-100, with higher score indicating greater independence and less functional disability

Time frame: Weekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)

ArmMeasureGroupValue (MEAN)Dispersion
ImmediateBarthel IndexTwo Weeks Post-Treatment71.7 Score on a scaleStandard Deviation 24.7
ImmediateBarthel IndexBaseline70.8 Score on a scaleStandard Deviation 23.5
ImmediateBarthel IndexImmediate Post-Treatment75.0 Score on a scaleStandard Deviation 22.9
DelayedBarthel IndexTwo Weeks Post-Treatment85.0 Score on a scaleStandard Deviation 7.1
DelayedBarthel IndexBaseline86.9 Score on a scaleStandard Deviation 10.9
DelayedBarthel IndexImmediate Post-Treatment82.5 Score on a scaleStandard Deviation 10.6
Primary

Behavioral Inattention Test- Conventional Subtest

Assessment of spatial neglect; scores range from 0-146, with lower scores indicating more severe spatial neglect

Time frame: Weekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)

ArmMeasureGroupValue (MEAN)Dispersion
ImmediateBehavioral Inattention Test- Conventional SubtestBaseline115.3 Score on a scaleStandard Deviation 45.7
ImmediateBehavioral Inattention Test- Conventional SubtestImmediate Post-Treatment127.6 Score on a scaleStandard Deviation 24.9
ImmediateBehavioral Inattention Test- Conventional SubtestTwo Weeks Post-Treatment127.3 Score on a scaleStandard Deviation 26.3
DelayedBehavioral Inattention Test- Conventional SubtestBaseline120.4 Score on a scaleStandard Deviation 5.3
DelayedBehavioral Inattention Test- Conventional SubtestImmediate Post-Treatment119.0 Score on a scaleStandard Deviation 19.8
DelayedBehavioral Inattention Test- Conventional SubtestTwo Weeks Post-Treatment123.5 Score on a scaleStandard Deviation 3.5
Primary

Catherine Bergego Scale Via the Kessler Foundation Neglect Assessment Process

Assessment of spatial neglect; scores range from 0-30, with higher scores indicating more severe spatial neglect

Time frame: Weekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)

ArmMeasureGroupValue (MEAN)Dispersion
ImmediateCatherine Bergego Scale Via the Kessler Foundation Neglect Assessment ProcessBaseline3.6 Score on a scaleStandard Deviation 2.6
ImmediateCatherine Bergego Scale Via the Kessler Foundation Neglect Assessment ProcessImmediate Post-Treatment1.5 Score on a scaleStandard Deviation 2.6
ImmediateCatherine Bergego Scale Via the Kessler Foundation Neglect Assessment ProcessTwo Weeks Post-Treatment1.5 Score on a scaleStandard Deviation 2.6
DelayedCatherine Bergego Scale Via the Kessler Foundation Neglect Assessment ProcessBaseline3.2 Score on a scaleStandard Deviation 2.4
DelayedCatherine Bergego Scale Via the Kessler Foundation Neglect Assessment ProcessImmediate Post-Treatment1.5 Score on a scaleStandard Deviation 2.1
DelayedCatherine Bergego Scale Via the Kessler Foundation Neglect Assessment ProcessTwo Weeks Post-Treatment2.5 Score on a scaleStandard Deviation 3.5
Primary

Classification of Lesion Location

Assessment of whether lesion is frontal or nonfrontal

Time frame: Baseline

Population: Unable to obtain records to complete this analysis

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
ImmediateClassification of Lesion Location0 Participants
DelayedClassification of Lesion Location0 Participants
Primary

Client Satisfaction Questionnaire

Assessment of satisfaction and perceived value of Prism Adaptation Treatment; scores range from 8-32, with higher scores indicating greater satisfaction

Time frame: Immediately following the two-week treatment (study week 3 in immediate group, study week 5 in delayed group)

ArmMeasureValue (MEAN)Dispersion
ImmediateClient Satisfaction Questionnaire32 score on a scaleStandard Deviation 0
DelayedClient Satisfaction Questionnaire27 score on a scaleStandard Deviation 4.2
Primary

Credibility/Expectancy Questionnaire

Assessment of whether Prism Adaptation Treatment is believable, convincing and logical (credibility) and the expectations for treatment-induced improvement (expectancy); two rating scales with one scale ranging from 1-9 and from 0%-100%, with higher scores indicating greater credibility and expectancy.

Time frame: Immediately following the two-week treatment (study week 3 in immediate group, study week 5 in delayed group)

ArmMeasureGroupValue (MEAN)Dispersion
ImmediateCredibility/Expectancy QuestionnaireCredibility6.2 score on a scaleStandard Deviation 1.6
ImmediateCredibility/Expectancy QuestionnaireExpectancy56.7 score on a scaleStandard Deviation 30.6
DelayedCredibility/Expectancy QuestionnaireCredibility8.0 score on a scaleStandard Deviation 0.89
DelayedCredibility/Expectancy QuestionnaireExpectancy75.0 score on a scaleStandard Deviation 7.1
Primary

Defense and Veterans Pain Rating Scale

Assessment of pain; scores range from 0-10, with higher scores indicating more severe pain

Time frame: Weekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)

ArmMeasureGroupValue (MEAN)Dispersion
ImmediateDefense and Veterans Pain Rating ScaleBaseline0.5 Score on a scaleStandard Deviation 0.84
ImmediateDefense and Veterans Pain Rating ScaleImmediate Post-Treatment0.0 Score on a scaleStandard Deviation 0
ImmediateDefense and Veterans Pain Rating ScaleTwo Weeks Post-Treatment0.7 Score on a scaleStandard Deviation 1.2
DelayedDefense and Veterans Pain Rating ScaleBaseline3.7 Score on a scaleStandard Deviation 2.2
DelayedDefense and Veterans Pain Rating ScaleImmediate Post-Treatment3.5 Score on a scaleStandard Deviation 2.8
DelayedDefense and Veterans Pain Rating ScaleTwo Weeks Post-Treatment1.5 Score on a scaleStandard Deviation 2.1
Primary

Functional Independence Measure

Assessment of cognitive and motor function; scores range from 18-126, with a higher score indicating greater functional independence

Time frame: Weekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)

ArmMeasureGroupValue (MEAN)Dispersion
ImmediateFunctional Independence MeasureBaseline88.2 Score on a scaleStandard Deviation 18.9
ImmediateFunctional Independence MeasureImmediate Post-Treatment94.7 Score on a scaleStandard Deviation 21.7
ImmediateFunctional Independence MeasureTwo Weeks Post-Treatment95.0 Score on a scaleStandard Deviation 20.9
DelayedFunctional Independence MeasureBaseline97.7 Score on a scaleStandard Deviation 9.1
DelayedFunctional Independence MeasureImmediate Post-Treatment98.5 Score on a scaleStandard Deviation 13.4
DelayedFunctional Independence MeasureTwo Weeks Post-Treatment99.5 Score on a scaleStandard Deviation 13.4
Primary

Wolf Motor Function Test

Assessment of motor function; scores range from 0-75, with higher scores indicating less impairment in motor function

Time frame: Weekly from baseline to follow-up (study week 7); baseline to immediate post-treatment (study week 3 in immediate group, study week 5 in delayed group), baseline to two weeks post-treatment (study week 7)

ArmMeasureGroupValue (MEAN)Dispersion
ImmediateWolf Motor Function TestBaseline35.5 Score on a scaleStandard Deviation 30.7
ImmediateWolf Motor Function TestImmediate Post-Treatment35.7 Score on a scaleStandard Deviation 34.2
ImmediateWolf Motor Function TestTwo Weeks Post-Treatment35.0 Score on a scaleStandard Deviation 34.7
DelayedWolf Motor Function TestBaseline54.3 Score on a scaleStandard Deviation 22.8
DelayedWolf Motor Function TestImmediate Post-Treatment63.0 Score on a scaleStandard Deviation 14.1
DelayedWolf Motor Function TestTwo Weeks Post-Treatment65.0 Score on a scaleStandard Deviation 12.7

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026