Haim Ring

Functional disability and rehabilitation outcome in right hemisphere damaged patients with and without unilateral spatial neglect

OBJECTIVE To evaluate the impact of unilateral spatial neglect (USN) on the rehabilitation outcome and long-term functioning in activities of daily living (ADL) and instrumental ADL (IADL) of right hemisphere damaged (RHD) stroke patients. DESIGN Assessments of sensory-motor and cognitive impairment and of functional disability were conducted upon admission to rehabilitation, upon discharge from the rehabilitation hospital, and 6 months after discharge, up to a year postonset. SETTING The Loewenstein Rehabilitation Hospital, which receives patients from all general hospitals in Israel. PATIENTS Forty consecutive admissions of adult right-handed patients with a first, single, right hemispheric stroke proven by computed tomography. Based on their total score in the Behavioral Inattention Test for neglect, patients were divided into two groups: 19 with neglect (USN+) and 21 without neglect (USN-). OUTCOME MEASURES Functional Independence Measure, for ADL; The Rabideau Kitchen Evaluation, for IADL. RESULTS Impairment and disability levels of RHD patients with and without USN were clearly differentiated. Neglect is associated with lower performance on measures of impairment (sensory-motor and cognitive), as well as on measures of disability in ADL and IADL. Differences were significant in all testing periods. The recovery pattern of USN+ patients is slower and more attenuated. In both groups, most improvement occurs in the first 5 months after onset. USN is the major predictor of rehabilitation outcome from admission to follow-up. CONCLUSIONS The significance of neglect as a major source of stroke-related long-term disability justifies further research efforts to develop appropriate therapeutic modalities for this complex, multifactorial syndrome.

ICF Core Sets for stroke.

OBJECTIVE To report on the results of the consensus process integrating evidence from preliminary studies to develop the first version of the Comprehensive ICF Core Set and the Brief ICF Core Set for stroke. METHODS A formal decision-making and consensus process integrating evidence gathered from preliminary studies was followed. Preliminary studies included a Delphi exercise, a systematic review, and an empirical data collection. After training in the ICF and based on these preliminary studies relevant ICF categories were identified in a formal consensus process by international experts from different backgrounds. RESULTS The preliminary studies identified a set of 448 ICF categories at the second, third and fourth ICF levels with 193 categories on body functions, 26 on body structures, 165 on activities and participation, and 64 on environmental factors. Thirty-nine experts from 12 different countries attended the consensus conference on stroke. Altogether 130 second-level categories were included in the Comprehensive ICF Core Set with 41 categories from the component body functions, 5 from body structures, 51 from activities and participation, and 33 from environmental factors. The Brief ICF Core Set included a total of 18 second-level categories (6 on body functions, 2 on body structures, 7 on activities and participation, and 3 on environmental factors). CONCLUSION A formal consensus process integrating evidence and expert opinion based on the ICF framework and classification led to the definition of ICF Core Sets for stroke. Both the Comprehensive ICF Core Set and the Brief ICF Core Set were defined.

Assessing and adjusting for cross-cultural validity of impairment and activity limitation scales through differential item functioning within the framework of the Rasch model the pro-esor project

IntroductionIn Europe it is common for outcome measures to be translated for use in other languages. This adaptation may be complicated by culturally specific approaches to certain tasks; for example, bathing. In this context the issue of cross-cultural validity becomes paramount. ObjectiveTo facilitate the pooling of data in international studies, a project set out to evaluate the cross-cultural validity of impairment and activity limitation measures used in rehabilitation from the perspective of the Rasch measurement model. MethodsCross-cultural validity is assessed through an analysis of Differential Item Functioning (DIF) within the context of additive conjoint measurement expressed through the Rasch model. Data from patients undergoing rehabilitation for stroke was provided from 62 centers across Europe. Two commonly used outcome measures, the Mini-Mental State Examination (MMSE) and the Functional Independence Measure (FIM) motor scale are used to illustrate the approach. ResultsPooled data from 3 countries for the MMSE were shown to fit the Rasch model with only 1 item displaying DIF by country. In contrast, many items from the FIM expressed DIF and misfit to the model. Consequently they were allowed to be unique across countries, so resolving the lack of fit to the model. ConclusionsWhere data are to be pooled for international studies, analysis of DIF by culture is essential. Where DIF is observed, adjustments can be made to allow for cultural differences in outcome measurement.

Activities, participation and satisfaction one-year post stroke

Purpose. To evaluate the chronic consequences of stroke in terms of activity limitations, restricted participation and dissatisfaction from life, and the relationship between these variables, in stroke survivors living in the community one-year post onset. Method. A total of 56 stroke patients (mean age: 57.7) who completed an in-patient rehabilitation programme, were evaluated one-year post onset in their homes, using the following instruments: Functional Independence Measure (FIM), Instrumental Activities of Daily Living Questionnaire (IADLq), Activity Card Sort (ACS), a work questionnaire, Life-Satisfaction Questionnaire (Li-Sat 9) and the Geriatric Depression Scale (GDS). Results. One year post stroke onset the mean FIM motor score was 75.88 (max score: 91), yet more than 50% of the sample still required assistance (usually mild to moderate) in dressing, bathing and use of stairs. The majority of the sample required full assistance in some IADL domains, notably meal preparation (77%), housekeeping (70%) and laundry (82%). Only one subject returned to paid employment and the mean activity level (ACS), representing the percentage of leisure and IADL activities retained from before stroke, was 42.8%. Satisfaction ratings were generally low but varied between domains. Only 39% were satisfied from ‘life as a whole’. The lowest satisfaction rates were noted for ‘vocational situation’ (14%), ‘leisure situation’ (34%) and ‘ability in self-care’ (43%), whereas the satisfaction rate from family life was high (84%). Significant correlations were found between overall life satisfaction scores and the overall FIM motor, IADLq, and ACS scores (Pearson r values: 0.32, 0.48 and 0.57, respectively). Activity level was found to be a significant predictor of satisfaction (p = 0.007) beyond that accounted for by demographic variables and depression. Conclusions. Stroke survivors dwelling in the community demonstrate long-standing dissatisfaction one-year post onset, correlating with activity limitation and restricted participation. The findings present a compelling need for rehabilitation services with a focus on participation in IADL and leisure activities, in order to improve the satisfaction of this population.

Return to work following traumatic brain injury: Trends and challenges

Purpose. The aim of this paper is to present the current knowledge regarding return to work (RTW) following traumatic brain injury (TBI). Method. Based on a Medline search, the authors reviewed the current TBI rehabilitation literature regarding (a) predictive factors for successful RTW, and (b) current concepts in rehabilitative strategies for successful RTW. Results. The functional consequences to the victim of traumatic brain injury (TBI) can be severe. Intensive rehabilitative efforts typically emphasize the early phase and address mainly the accompanying functional deficits in the realm of basic activities of daily living and mobility. An otherwise successful medical rehabilitation may end unsuccessfully because of the failure to return to work, with profound consequences to the individual and family, both economic and psychosocial. Even mild TBI may cause lasting problems in tasks calling for sustained attention. There appears to be a complex interaction between pre-morbid characteristics, injury factors, post injury impairments, personal and environmental factors in TBI patients, which influences RTW outcomes in ways that make prediction difficult. Injury severity and lack of self-awareness appear to be the most significant indicators of failure to RTW. Several medical, psychosocial and rehabilitative therapies are currently being implemented in rehabilitation settings which improve the chances of returning to work. Conclusion. Accurate prediction of whether a particular TBI patient will successfully return to work is not feasible, with RTW rates in the 12 – 70% range. A significant proportion of TBI patients, including those who are severely injured, are able to return to productive employment if sufficient and appropriate effort is invested. A comprehensive approach – medical and psychosocial – eventually entailing adequate vocational rehabilitation with supported employment can improve outcomes.

Return to work in stroke patients

Purpose. To present the current state of knowledge regarding return to work (RTW) following stroke. Method. A comprehensive review of the current stroke rehabilitation literature pertaining to prognostic and treatment factors for RTW following stroke. Results. Stroke is a major healthcare problem and one of the most expensive diseases in modern society. Stroke results not only in impairment and limitation in basic daily activities; it also impacts on participation in community activities, such as returning to work. Return to work in post-stroke patients has been reported to range between 19% and 73%. Various studies report on return to work in diverse populations, using different follow-up periods, while utilizing variable definitions of stroke and successful work outcomes. The factors positively related to RTW in stroke patients, as found in the literature, are age less then 65 years, high education level and white-collar employment. The significant negative predictor is the severity of stroke. This is indicated by neurological parameters including functional measures of the presence and extent of motor and cognitive impairment. Significantly, the side of the brain damaged and stroke location were not found to be correlated with RTW. Social and financial factors also significantly influence RTW. Conclusions. RTW in stroke patients should be considered one of the indicators of a successful rehabilitation as it influences self-image, well-being and life satisfaction. There is still a considerable lack of knowledge regarding effective assessments and interventions in vocational rehabilitation in stroke patients.

The use of outcome measures in physical medicine and rehabilitation within Europe.

The aim of the study was to survey the use of outcome measures in rehabilitation within Europe. It was envisaged that this would provide the basis for further studies on the cross-cultural validity of outcome measures. A postal questionnaire was distributed in November 1998 to 866 units providing rehabilitation. In total, 418 questionnaires were returned, corresponding to a response rate of 48%. These 418 centres treated an estimated 113,000 patients annually, undertaking 360,000 assessments. The survey focused on nine diagnostic groups: hip and knee replacement, low back pain, lower limb amputees, multiple sclerosis, neuromuscular disorders, rheumatoid arthritis, spinal cord lesions, stroke and traumatic brain injury. It identified a relatively small number of dominant outcome assessments for each diagnostic group and some variation in the preference for measures across regions. A large number of measures, however, are being used in one or a small number of locations and with relatively few patients. For rehabilitation of orthopaedic patients the majority of assessments undertaken are at the impairment level. For patients with neurological disorders the emphasis is mostly upon measures of disability.

Interactive virtual environment training for safe street crossing of right hemisphere stroke patients with unilateral spatial neglect

Purpose. The goal of this study was to determine whether non immersive interactive virtual environments are an effective medium for training individuals who suffer from Unilateral Spatial Neglect (USN) as a result of a right hemisphere stroke, and to compare it to a standard computer visual scanning training. Method. Participants included 19 patients with right hemisphere stroke in two groups, 11 in an experimental group were given computer desktop-based Virtual Reality (VR) street crossing training and 8 in a control group who were given computer based visual scanning tasks, both for a total of twelve sessions, 9 hours total, over four weeks. Measures included: 1. Standard USN assessments, paper and pencil and ADL checklist; 2. Test on the VR street program; and 3. Actual street crossing videotaped. Testing was performed pre and post intervention. Results. The VR group achieved on the USN measures results that equaled those achieved by the control group treated with conventional visual scanning tasks. They improved more on the VR test and they did better on some measures of the real street crossing. Conclusions. Despite several limitations in this study the present results support the effectiveness of the VR street program in the treatment of participants with USN, and further development of the program.

CONTROLLED STUDY OF NEUROPROSTHETIC FUNCTIONAL ELECTRICAL STIMULATION IN SUB-ACUTE POST-STROKE REHABILITATION

OBJECTIVE Assess the effects of daily neuroprosthetic (NESS Handmaster) functional electrical stimulation in sub-acute stroke. DESIGN Controlled study, patients clinically stratified to 2 groups; no active finger movement, and partial active finger movements, and then randomized to control and neuroprosthesis groups. Observer blinded evaluations at baseline and completion of the 6-week study. SUBJECTS 22 patients with moderate to severe upper limb paresis 3-6 months post-onset. METHODS Patients in day hospital rehabilitation, receiving physical and occupational therapy 3 times weekly. The neuroprosthesis group used the device at home. RESULTS The neuroprosthesis group had significantly greater improvements in spasticity, active range of motion and scores on the functional hand tests (those with partial active motion). Of the few patients with pain and oedema, there was improvement only among those in the neuroprosthesis group. There were no adverse reactions. CONCLUSION Supplementing standard outpatient rehabilitation with daily home neuroprosthetic activation improves upper limb outcomes.

ICF Core Sets for individuals with spinal cord injury in the long-term context

Study design:A formal decision-making and consensus process integrating evidence gathered from preparatory studies was followed.Objectives:The objective of the study was to report on the results of the consensus process to develop the first version of a Comprehensive International Classification of Functioning, Disability and Health (ICF) Core Set, and a Brief ICF Core Set for individuals with spinal cord injury (SCI) in the long-term context.Setting:The consensus conference took place in Switzerland. Preparatory studies were performed worldwide.Methods:Preparatory studies included an expert survey, a systematic literature review, a qualitative study and empirical data collection involving people with SCI. Relevant ICF categories were identified in a formal consensus process by international experts from different backgrounds.Results:The preparatory studies identified a set of 595 ICF categories at the second, third or fourth level. A total of 34 experts from 31 countries attended the consensus conference (12 physicians, 6 physical therapists, 5 occupational therapists, 6 nurses, 3 psychologists and 2 social workers). Altogether, 168 second-, third- or fourth-level categories were included in the Comprehensive ICF Core with 44 categories from body functions, 19 from body structures, 64 from activities and participation and 41 from environmental factors. The Brief Core Set included a total of 33 second-level categories with 9 on body functions, 4 on body structures, 11 on activities and participation and 9 on environmental factors.Conclusion:A formal consensus process integrating evidence and expert opinion based on the ICF led to the definition of the ICF Core Sets for individuals with SCI in the long-term context. Further validation of this first version is needed.