Publications (9)7.32 Total impact
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Article: Associations between gait patterns, brain lesion factors and functional recovery in stroke patients.
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ABSTRACT: Brain CT scans and neurological condition were evaluated in 74 stroke patients. Firstly, we found that using a classification-tree technique based on CT scan parameters (an innovative method, analyzing four parameters simultaneously) coincided with our previously proposed kinematic artificial neural network (ANN) classification technique for 71.3% of patients. Lesion size and location were found to be the most significant CT scan predictors of gait classification. Secondly, we sought to gauge post-rehabilitation functional recovery in patients within the same three groups of gait pattern. We found significant differences in scores between the three gait pattern groups, before and after rehabilitation (Kruskal-Wallis test, p<0.001), while significant improvement was observed in each group (Wilcoxon text; p<0.01). We conclude that patient classification into pathological gait groups on the basis of gait or CT scan parameters may serve as an early predictor of future functional outcome.Gait & posture 09/2011; 35(2):214-7. · 2.58 Impact Factor -
Chapter: Artificial Neural Networks (ANN) Applied for Gait Classification and Physiotherapy Monitoring in Post Stroke Patients
04/2011; , ISBN: 978-953-307-243-2 -
Article: Development of early comprehensive stroke inpatient rehabilitation in Poland - current status and future requirements.
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ABSTRACT: Every stroke patient should undergo early rehabilitation. We aimed to evaluate accessibility, development and needs in early stroke inpatient rehabilitation in Poland. A questionnaire evaluating rehabilitation departments was prepared and sent (in 2004 and 2008) to rehabilitation wards in Poland, where stroke patients are treated and undergo early rehabilitation. We divided departments into classes: class A - having comprehensive rehabilitation (physiotherapy minimum 60 minutes/day, speech therapy minimum 30 minutes/5 days/week, rehabilitation of other cognitive impairments minimum 30 minutes/5 days/week, group physiotherapy); B - having the possibility of all types of therapy, but done less frequently; C - physiotherapy and speech therapy; D - physiotherapy and cognitive rehabilitation; E - only physiotherapy. In 2004, we obtained responses from 115 of 172 (66.9%) rehabilitation departments. According to prespecified criteria there were 11 class A, 31 class B, 28 class C, 4 class D, and 41 class E wards. In 2008, we received response from 89 of 149 (59.7%) rehabilitation departments. According to prespecified criteria there were 17 class A, 40 class B, 22 class C, 0 class D, and 10 class E wards. In 2004, 159 beds and in 2008, 294 beds in class A departments were available for stroke patients. The minimal number of needed but lacking beds was 604 in 2004 and 469 in 2008. Development of departments providing early comprehensive stroke rehabilitation from 2004 to 2008 is marked, but still insufficient. In 2008, 19% of rehabilitation departments could provide comprehensive stroke rehabilitation and this was 38.5% of beds actually needed.Neurologia i neurochirurgia polska 01/2011; 45(3):245-51. · 0.43 Impact Factor -
Article: Gait classification in post-stroke patients using artificial neural networks.
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ABSTRACT: The aim of this study was to test three methods for classifying the gait patterns of post-stroke patients into homogenous groups. First, qualitative test results were found to correctly classify patients' gait patterns with an average success rate of 85%. Seeking further improvement, two quantitative methods were then tested. Analysis of min/max angle values in three lower limb joints, however, was less successful, showing a correct classification rate of below 50%. The best classification results were seen using an artificial neural network (ANN) to analyze the full progression of lower limb joint angle changes as a function of the gait cycle (with success rates from 100% for the knee joint to 86% for the frontal motion of the hip joint). These findings may help clinicians improve targeted therapy.Gait & posture 06/2009; 30(2):207-10. · 2.58 Impact Factor -
Article: Two-dimensional GaAs/AlGaAs superlattice structures for solar cell applications: ultimate efficiency estimation
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ABSTRACT: We calculate the band structure of a two-dimensional GaAs/AlGaAs superlattice and estimate the ultimate efficiency of solar cells using this type of structure for solar energy conversion. The superlattice under consideration consists of gallium arsenide rods forming a square lattice and embedded in aluminium gallium arsenide. The ultimate efficiency is determined versus structural parameters including the filling fraction, the superlattice constant, the rod geometry and the concentration of Al in the matrix material. The calculated efficiency of the superlattice proves to exceed the efficiency of each component material in the monolithic state in a wide range of parameter values. Comment: 11 pages, 7 figures05/2009; -
Article: [Clinical effects of intensive physiotherapy in stroke patients].
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ABSTRACT: The present therapies used for post stroke patients are often not effective. Many patients finish the therapy and are not able to function independently. This situation is not in line with the present level of neurobiology: which states that function after focal lesion of C.N.S. can be recovered. Recently many studies have been undertaken which indicate the possibility of cortical plasticity by intensive physiotherapy. The main aims of the study were to review the efficacy and application of Constraint Induced Therapy for post stroke patients in a neurological rehabilitation ward and outpatient clinic. The group was selected from the patients who were admitted into the clinic. The patients signed the agreement that they could walk unaided and their affected arm could use a primitive grip. The patient's unaffected arm was restrained using a sling for 5 hours per day for 15 consecutive days. Also each patient had one hour per day of physiotherapy based on PNF and NDT Bobath concepts. Patients were tested before and after the experiment using functional tests (modified Wolf Test) and testing of motor deficit using Tests for the Quality of Movement Patterns (by Bobath). Seven patients were selected with an average time from stroke of 11 months. The average age was 46 years. All patients completed the study without any adverse affects. All patients increased their functional ability and decreased the motor deficit of the affected arm. The average increase in task function was 27%. The greatest average improvement (40%) was noted in chronic patients who suffered from stroke more than 6 months previous. The experiment was completed without any major reorganisation of the neurological ward and without additional expenditure. The small group of patients that participated in this study indicates that this CI therapy should be utilised for a larger amount of patients with greater neurological deficits.Neurologia i neurochirurgia polska 02/2002; 36 Suppl 1:41-60. · 0.43 Impact Factor -
Article: [Botulinum toxin type A in the management of spasticity in adults: recommendations of an interdisciplinary group of experts].
Neurologia i neurochirurgia polska 38(6):443-5. · 0.43 Impact Factor -
Article: [Evaluation of needs in early post-stroke rehabilitation in Poland].
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ABSTRACT: According to European Stroke Initiative (EUSI) recommendations every stroke patient should undergo rehabilitation. We aimed to evaluate the needs of comprehensive stroke in-patient rehabilitation in Poland. We designed and distributed a questionnaire evaluating rehabilitation departments in Poland, where stroke patients undergo early rehabilitation. Comprehensive rehabilitation was defined as: kinesitherapy (minimum 60 minutes/day), speech therapy (minimum 30 minutes 5 days a week), rehabilitation of other cognitive impairments and group kinesitherapy. We separated rehabilitation departments where comprehensive post-stroke rehabilitation is conducted, and calculated the number of beds in these departments only for stroke patients. We estimated the number of acute stroke patients in Poland. We evaluated the number of patients requiring in-patient rehabilitation based on results from the 2nd Department of Neurology, Institute of Psychiatry and Neurology, Warsaw, where all stroke patients who need in-patient rehabilitation have such a possibility. We estimated the number of beds required in rehabilitation departments for stroke patients in Poland. We obtained responses from 115 out of 172 (66.9%) rehabilitation departments. Comprehensive post-stroke rehabilitation is conducted in 11 departments. 159 beds in these departments are for stroke patients. From 64,896 acute stroke patients 9,927 will need in-patient rehabilitation. We need 604 more beds in rehabilitation departments for stroke patients in Poland. Only 10% of rehabilitation departments could provide comprehensive stroke rehabilitation in Poland. At present, the number of beds in rehabilitation departments for stroke patients covers about 20.8% of actual needs. An increased number of rehabilitation beds for stroke patients could result in a decreased number of disabled post-stroke patients.Neurologia i neurochirurgia polska 40(6):471-7. · 0.43 Impact Factor -
Article: [An evaluation of the accessibility of early post-stroke comprehensive rehabilitation in Poland].
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ABSTRACT: According to the European Stroke Initiative recommendations every stroke patient should undergo rehabilitation; its program should be tailored according to the individual needs of the patient. The aim of our study was to evaluate the accessibility of comprehensive early stroke rehabilitation at neurological departments in Poland. We have sent a questionnaire evaluating neurological and rehabilitation departments in Poland, where stroke patients are treated and undergo early rehabilitation. We divided them into 5 categories -- classes from A to F: class A -- having comprehensive rehabilitation (kinesitherapy minimum 60 minutes/day, speech therapy minimum 30 minutes for 5 days a week and rehabilitation of other cognitive impairments and group kinesitherapy at rehabilitation departments); B -- having the possibility of all types of therapy, but is done less frequently; C -- kinesitherapy and speech therapy; D -- kinesitherapy and cognitive rehabilitation; E -- only kinesitherapy. We also separated neurological departments without trained rehabilitation staff. We obtained responses from 191 of 215 (88.8%) neurological departments. According to criteria: 26 class A, 38 class B, 50 class C, 2 class D, 73 class E, 2 without specialized rehabilitation staff. We received filled questionnaires from 115 of 172 (66.9%) rehabilitation departments. According to criteria: 11 class A, 31 class B, 28 class C, 4 class D and 41 class E. Only 14% of all neurological departments and 10% of rehabilitation departments administered comprehensive early stroke rehabilitation in Poland. Improvement of comprehensive rehabilitation accessibility in Poland is necessary for lowering the number of disabled post-stroke patients.Neurologia i neurochirurgia polska 40(1):10-5. · 0.43 Impact Factor
