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Biomedical subjects

H Ring

Publications and source records attributed to H Ring.

At least 19 recordsLinked to original sources
PubMed2006

Cross-cultural validity of FIM in spinal cord injury.

OBJECTIVE: To analyse cross-culture validity of the Functional Independence Measure (FIM) in patients with a spinal cord injury using a modern psychometric approach. SETTINGS: A total of 19 rehabilitation facilities from four countries in Europe. PARTICIPANTS: A total of 647 patients at admission, median age 46 years, 69% male. METHODS: Data from the FIM, collected on inpatient admission, was fitted to the Rasch model. A detailed analysis of scoring functions of the seven categories of the FIM items was undertaken before to testing fit to the model. Categories were rescored where necessary. Fit to the model was assessed initially within country, and then in the pooled data. Analysis of differential item functioning (DIF) was undertaken in the pooled data for each of the FIM motor and social cognitive scales, respectively. Final fit to the model was tested for breach of local independence by principle components analysis (PCA). RESULTS: The present scoring system for the FIM motor and cognitive scales, that is a seven category scale, was found to be invalid, necessitating extensive rescoring. Following this, DIF was found in a number of items within the motor scale, requiring a complex solution of splitting items by country to allow for the valid pooling of data. Five country-specific items could not be retained within this solution. The FIM cognitive scale fitted the Rasch model after rescoring, but there was a substantial ceiling effect. CONCLUSIONS: Data from the FIM motor scale for patients with spinal cord injury should not be pooled in its raw form, or compared from country to country. Only after fit to the Rasch model and necessary adjustments could such a comparison be made, but with a loss of clinical important items. The FIM cognitive scale works well following rescoring, and data may be pooled, but many patients were at the maximum score.

Activities of Daily Living↗
PubMed2006

Functional electrical stimulation-induced neural changes and recovery after stroke.

Rehabilitation as a treatment approach to affect neural remodeling or ''plasticity'' of the injured brain is gaining increasing attention and appreciation. While rehabilitation continues to emphasize re-establishment of functional abilities, the approach of neurorehabilitation attempts to improve recovery by impacting on changes within the central nervous system rather than reliance on compensatory techniques. Functional electrical stimulation is one of the prominent modalities being used for neurorehabilitation. This report provides an overview of the relevance of brain plasticity to rehabilitation, and of the physiological and clinical studies that indicate the effects of functional electrical stimulation as a potential tool in neural remodeling.

Brain↗
PubMed2005

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.

Accidents, Traffic↗
PubMed2005

Heart rate variability (HRV) of patients with traumatic brain injury (TBI) during the post-insult sub-acute period.

OBJECTIVE: To evaluate heart rate variability (HRV) of patients with traumatic brain injury (TBI). METHODS: By a prospective study, the HRV was assessed in 20 patients with TBI during the sub-acute period post-injury (the first test was performed at a mean time post-insult of 38 days) and a matched control. The patients were examined twice, 1 month apart. The assessment included HRV (both in time and frequency domains), GCS, length of coma, brain CT, FIM and FAM. RESULTS: A significant difference was found between patients and controls concerning HRV total power, i.e. frequencies between 0.01-0.6 Hz (high frequency p = 0.003, low frequency p = 0.013, total power p = 0.034) and for standard deviation of RR interval p = 0.011. HRV changes were related more to the timing of the evaluation than to the severity of the brain damage. CONCLUSION: HRV differed of patients with TBI and in the control group. Tendency to HRV normalization changes was detected during the first 3 months after the injury, which suggests recovery of the autonomic nervous system.

Adolescent↗
PubMed2005

Domains of research, development and strategic planning in rehabilitation medicine.

Rehabilitation systems are almost universally struggling to maintain or improve their standings. In this sense it is very useful to draw strategic plans for research and development taking into consideration the characteristics of the profession and, at the same time, the environment where they perform. Five domains of activities can be identified in this sense: measurement of clinical outcomes (including cost/effectiveness and quality assurance), services delivery: the continuum of care, technologies/procedures, pharmacological treatments and opportunities (''niches''). Each domain is described and the different possibilities analyzed. Each system--regional, national--or even a facility should make a selection of what fits their strategic plan best and which modality can be easily incorporated and where human and material resources exist or can be acquired. The need for the justification of the rehabilitation services looks by now as a must, universally.

Biomedical Research↗
PubMed2005

Cerebral blood flow velocity during postural changes on tilt table in stroke patients.

AIM: The aim of the study is to investigate the correlation between orthostatic hypotension (OH), mean flow velocity (MFV) as measured by transcranial Doppler (TCD) in middle cerebral artery (MCA) bilaterally during tilt table test (TTT) and functional and neurological parameters in acute ischemic stroke patients, undergoing rehabilitation. METHODS: Thirteen patients after first ischemic stroke in the MCA territory and 13 healthy volunteers were examined. TTT was performed with elevating the subject from supine to 80 masculine standing position and back to supine within 10 min. Peripheral blood pressure was measured and monitoring of MFV in MCA of damaged and healthy hemisphere by TCD was performed during the TTT. Patients underwent the test few days after admission to rehabilitation department and were classified into 2 subgroups: those with decrease of systolic blood pressure of at least 20 mm/Hg during the test and those without the OH. RESULTS: Among patients without OH, MFV indexes were almost the same in damaged and healthy MCA and did not changed during the test. Patients with OH symptoms showed significant differences between blood flow velocities in 2 hemispheres in favor of nondamaged size. No association was found between the OH and the severity of functional and neurological status after stroke. CONCLUSIONS: These findings suggest that the appearance of OH after ischemic stroke may be associated with decreased blood flow velocity in damaged MCA at the beginning of rehabilitation treatment, but not with functional and neurological status of the patient.

Aged↗
PubMed2003

Rehabilitation of a patient with critical illness polyneuropathy (CIP) following acute respiratory failure: a case report and review of literature.

Critical illness polyneuropathy (CIP), a neurologic complication that may occur secondary to cardio-respiratory distress, surgery, trauma and coma, is associated with sepsis or multiple organ failure. CIP is characterized by an axonal distal degeneration of sensory and motor fibres. The patients will often become neurologically conspicuous when weaning from mechanical ventilation is unexpectedly difficult. There are just a few cases reported with description of the functional outcome and rehabilitation issues of this condition. An additional CIP case of a 62-year old man complicated with anoxic brain damage during the respiratory distress is reported here. He was referred for rehabilitation, made a remarkable recovery (FIM gain 45!) and returned home after 79 days of treatment in the ward. A review of the pertinent literature is provided. Rehabilitation specialists and other professionals working within ICU's should be aware of this condition and be able to recognize and treat CIP at early possible stage.

Acute Disease↗
PubMed2002

Rasch analysis of the Catz-Itzkovich spinal cord independence measure.

BACKGROUND: The Spinal Cord Independence Measure (SCIM) is a new disability scale developed specifically for patients with spinal cord lesions (SCL). Its original and second versions (SCIM and SCIM II) were found to be reliable and more sensitive than the Functional Independence Measure (FIM) to functional changes in SCL patients. OBJECTIVE: To further validate the SCIM II, examining its components on a larger population. DESIGN: Retrospective cohort study. SETTING: Two rehabilitation centers in Israel. SUBJECTS: Two hundred and two inpatients with SCL. INTERVENTIONS: Routine SCIM assessments by staff nurses. Rasch and accompanying analyses. MAIN OUTCOME MEASURES: Unidimensionality of subscales (areas of function); goodness of fit of the tasks to the Rasch model; relationship of total-patient and single-task performance-ability; usability of task categories and the order of threshold locations between them; subscale discrimination of ability and difficulty and hierarchical nature; discrimination of task-categories ability, ie, distribution of thresholds along ability levels; and differential task behavior by age, gender and examination subgroups. RESULTS: Four unidimensional subscales were identified, and an acceptable goodness of fit to the Rasch model was demonstrated in most of their tasks (infit mean square=0.8-1.2, outfit mean square=0.6-1.4). However, some tasks showed overfit (bathing lower body) and some showed misfit (wheelchair-car transfer). Additional analyses performed to check for reasons for less than acceptable fit revealed flaws in a minority of the outcome measures. CONCLUSIONS: The findings of this analysis confirm the validity and reliability of the SCIM II. To a large extent we can infer that the SCIM II construct allows for the detection of any level of disability in any patient with SCL. A few item categories, however, should be rephrased or removed.

Activities of Daily Living↗
PubMed2001

The Catz-Itzkovich SCIM: a revised version of the Spinal Cord Independence Measure.

PURPOSE: To examine the suitability of the revised Spinal Cord Independence Measure, the Catz-ltzkovich SCIM, for evaluation of patients with spinal cord lesions, as compared to the original SCIM and to the Functional Independence Measure (FIM). METHOD: The revised SCIM was applied by paired independent teams of occupational therapists, physiotherapists and nurses and the FIM by a single nurse. The examiners assigned scores to the functional capabilities of 28 patients with spinal cord lesions. The scores by the revised SCIM were analysed for reproducibility as between the two teams of examiners (interrater reliability) and for their correlation with the FIM scores. RESULTS: The frequency of identical scoring by two independent examiners (total agreement) was 80% or higher for 13/18 individual functions listed in the revised SCIM. In the self-care category it was 80-99%, as compared to 75-87% before revision. In neither bowel management nor bed mobility was there an increase over the original SCIM in the frequency of identical scores, despite rephrasing and restructuring of the scoring criteria. A high correlation was noted between the paired scores for all functions listed as well as for those comprising each of the four functional categories (r = 0.90-0.96, p <0.001). The total revised-SCIM scores were significantly correlated with those derived by the FIM (r = 0.835, p < 0.001). CONCLUSIONS: The findings indicate that the newly revised SCIM (Catz-Itzkovich) is a valid and highly reproducible measure of daily function in patients with spinal cord lesions, and is superior to the original SCIM. We recommend that it supersede the original SCIM.

Activities of Daily Living↗
PubMed2001

The spinal cord independence measure (SCIM): sensitivity to functional changes in subgroups of spinal cord lesion patients.

BACKGROUND: The spinal cord independence measure (SCIM) is a newly developed disability scale specific to patients with spinal cord lesions (SCL). Its sensitivity to functional changes in a whole cohort of SCL patients was found to be better than that of the functional independence measure (FIM). OBJECTIVE: o compare the sensitivity to functional changes of the SCIM and the FIM in SCL subgroups. DESIGN: A comparative self-controlled study. SETTING: The Spinal Department, Loewenstein Rehabilitation Hospital, Raanana, Israel. SUBJECTS: 22 SCL inpatients. INTERVENTIONS: Monthly SCIM and FIM assessments of the subgroups. MAIN OUTCOME MEASURES: Functional change detection rate (FDR) and mean differences between consecutive scores (DCS). RESULTS: The outcome measures of the SCIM were higher than those of the FIM for tetraplegia and paraplegia, complete and incomplete lesions (the FIM missed 25-27% of the functional changes detected by the SCIM; DSC 8.2-11.4 vs 5.2-9; P<0.05 in most comparisons). The SCIM did not exhibit this advantage, however, in the functional areas of self-care and mobility in the room and toilet. Further subgrouping yielded similar results. CONCLUSIONS: The SCIM is more sensitive than the FIM to functional changes in the subgroups studied, and has the potential to serve as a universal tool for disability assessment of SCL patients.

Activities of Daily Living↗
PubMed2001

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.

Amputees↗
PubMed2001

Quality of care for urinary incontinence in a rehabilitation setting for patients with stroke. Simultaneous monitoring of process and outcome.

OBJECTIVE: To study the quality of care provided for patients with urinary incontinence following a stroke, by monitoring both process and outcome elements of care simultaneously. DESIGN: Prospective follow-up of patients (of all ages and of both sexes) with urinary incontinence that appeared following a stroke who were admitted for rehabilitation during a six 6-month period. SETTING: A ward for stroke rehabilitation in The Loewenstein Hospital-Rehabilitation Centre in Raanana, Israel. RESULTS: Thirty-seven patients with stroke and urinary incontinence (mean age 61 years, 68% men) were included in the study; 84% of the 37 patients were discharged, although only 25% of them were continent. No lasting complications of urinary incontinence developed and there was no interference with rehabilitation activities. There was a correlation between incontinence and low score of Functional Independence Measure (FIM) on admission, being higher on discharge in those who became continent than in those who did not. CONCLUSIONS: Ward staff are aware of the potential problem of incontinence in patients with stroke. The problem is identified on admission and accorded adequate attention and care with satisfactory outcomes. The approach of monitoring process and outcome elements of care simultaneously in conditions that, during inpatient rehabilitation of patients with stroke, may endanger life, interfere with rehabilitation and delay functional recovery, could be a useful way to assess and improve the quality of care.

Activities of Daily Living↗
PubMed2001

Visual search in peripheral vision: learning effects and set-size dependence.

Feature search for a light bar with one orientation (or color) embedded in an array of bars with a very different orientation (or color) is quick, easy and independent of the number of array elements. In contrast, search for a conjunction target has a linear response time dependence on the number of distractors. Training can improve performance of both these tasks. We report that these properties may not be valid for eccentric stimulus presentation. In general, the two hemifields are not equally suited to search, and training is most effective in the weaker hemifield. In addition, the feature-search independence of set-size may not always be valid for stimulus arrays that are presented peripherally. Subjects were tested on orientation and color feature tasks, and on orientation-color conjunction search with 3 array sizes presented at fixation or eccentrically in the right or left hemifield. During a second testing session, improvement was so much greater for the non-preferred hemifield that sometimes the preference was switched. Surprisingly, preferred hemifield performance actually declined for some subjects. Thus, the hemifield preference effect seems related to competition, and perhaps an automatic attention-directing mechanism. We confirmed the central presentation set-size independence for feature search but found a great difference between large and small arrays when presentation was lateral. There are two sources of this array size effect: 1. Target eccentricity, demonstrated by comparing performance for different target locations with the same array size. 2. Target location uncertainty, seen by comparing performance for different size arrays when the target elements appeared at the same locations. Training also affected the array-size dependence, changing search performance from set-size dependent to independent or vice versa at the point of greatest training effect.

Adult↗
PubMed2001

[Diagnosis and therapy in acute stroke: a rehabilitation center viewpoint].

The extent of the diagnostic work-up of patients with acute stroke was evaluated in 101 patients admitted for rehabilitation during a 4-month period in 1997. This included specific blood tests and neuro- and cardiac imaging, and compared the extent of work-up in a community hospital versus a rehabilitation center. Comparisons were also made with similar investigations 10 and 20 years earlier. Results demonstrated that the trend to admit younger stroke patients (< 50 years) to neurological (as opposed to medical) departments observed between 1977-1987 persisted in 1997. The use of CT scan increased dramatically from 1977 to 1987 (19% vs 78%), and in 1997 was actually 100%. The use of carotid duplex and echocardiography increased steadily during the 3 decades reaching 26% and 28% respectively. Tests for thrombophilia were seldom done. However, in neurological departments it was done in about 50% of the younger stroke patients. In neurology departments carotid duplex was done 2 to 3 times more often than in medical departments. During rehabilitation imaging tests were done once or more in almost half the patients. The results and those of additional blood tests, have led to modification of antithrombotic treatment in 14% of the younger group and 4% of the older group. We have clearly shown that while stroke work-up has become more comprehensive in recent years, there is still much to do in this field. Stroke units or teams in our general hospitals will increase stroke awareness, improve work-up and hasten definitive treatment.

Acute Disease↗
PubMed2001

[Relationship between type and amount of treatment and functional improvement in first-stroke during in-patients rehabilitation].

The effectiveness of ongoing rehabilitation services for post-acute stroke patients is poorly documented. The aim of the present study was describe the relationships between functional status at discharge and intensity of therapies, including occupational therapy, physical therapy, speech therapy and nursing care, during inpatient medical rehabilitation. All patients (30) admitted after a first stroke. The functional status of patients was observed by using the Functional Independence Measure on patient admission to rehabilitation and time per week during the hospitalisation. The neurological status of patients was observed by using the NIH Stroke Scale on patient admission to rehabilitation and at discharge. The study population included 30 patients of average 64.4 years; 60% were men; length of stay was 74 days. Statistical analysis were performed to check for intensity of therapies, discharge motor and cognitive function, the extent to which potential functional gains were achieved. Intensities of physical and speech therapies were not significant predictors of outcomes. Intensity of occupational therapy was significant predictor of outcomes (P = 0.04). We suggest that efficiently staged rehabilitation should vary the intensity and nature of services according to patients functional status, impairments, comorbid conditions and other clinical factors.

Activities of Daily Living↗