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Dive into the research topics where Pesi Katrak is active.

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Featured researches published by Pesi Katrak.


Journal of Rehabilitation Medicine | 2009

BOTULINUM TOXIN A FOR TREATMENT OF UPPER LIMB SPASTICITY FOLLOWING STROKE: A MULTI-CENTRE RANDOMIZED PLACEBO- CONTROLLED STUDY OF THE EFFECTS ON QUALITY OF LIFE AND OTHER PERSON-CENTRED OUTCOMES

Paul McCrory; Lynne Turner-Stokes; Ian J. Baguley; Stephen De Graaff; Pesi Katrak; Joseph Sandanam; Leo Davies; Melinda Munns; Andrew J. Hughes

OBJECTIVE Botulinum toxin is known to relieve upper limb spasticity, which is a disabling complication of stroke. We examined its effect on quality of life and other person-centred perspectives. DESIGN A multi-centre, randomized, double-blind, placebo-controlled study. PATIENTS Ninety-six patients were randomized (mean age 59.5 years) at least 6 months post-stroke. Mean time since stroke was 5.9 years. METHODS Patients received either botulinum toxin type A or placebo into the affected distal upper limb muscles on 2 occasions, 12 weeks apart. Assessment was undertaken at baseline, 8, 12, 20 and 24 weeks. The primary outcome measure was the Assessment of Quality of Life scale (AQoL). Secondary outcome assessments included Goal Attainment Scaling (GAS), pain, mood, global benefit, Modified Ashworth Scale (MAS), disability and carer burden. RESULTS The groups did not differ significantly with respect to quality of life, pain, mood, disability or carer burden. However, patients treated with botulinum toxin type A had significantly greater reduction in spasticity (MAS) (p < 0.001), which translated into higher GAS scores (p < 0.01) and greater global benefit (p < 0.01). CONCLUSION Although no change in quality of life was demonstrated using the AQoL, botulinum toxin type A was found to be safe and efficacious in reducing upper limb spasticity and improving the ability to achieve personal goals.


Journal of Rehabilitation Medicine | 2010

GOAL ATTAINMENT SCALING IN THE EVALUATION OF TREATMENT OF UPPER LIMB SPASTICITY WITH BOTULINUM TOXIN: A SECONDARY ANALYSIS FROM A DOUBLE-BLIND PLACEBO-CONTROLLED RANDOMIZED CLINICAL TRIAL

Lynne Turner-Stokes; Ian J. Baguley; Stephen De Graaff; Pesi Katrak; Leo Davies; Paul McCrory; Andrew J. Hughes

OBJECTIVE To examine goal attainment scaling for evaluation of treatment for upper limb post-stroke spasticity with botulinum toxin-A. DESIGN Secondary analysis of a multi-centre double-blind, placebo-controlled randomized clinical trial. SETTING Six outpatient clinics in Australia. PARTICIPANTS Patients (n=90) completing per protocol 2 cycles of treatment/placebo. Mean age 54.5 (standard deviation 13.2) years. Mean time since stroke 5.9 (standard deviation 10.5) years. INTERVENTIONS Intramuscular botulinum toxin-A (Dysport 500-1000U) or placebo given at 0 and 12 weeks. Measurement points were baseline, 8 and 20 weeks. MAIN OUTCOME MEASURES Individualized goal attainment and its relationship with spasticity and other person-centred measures - pain, mood, quality of life and global benefit. RESULTS A significant treatment effect was observed with respect to goal attainment (Mann-Whitney z=-2.33, p< or = 0.02). Goal-attainment scaling outcome T-scores were highly correlated with reduction in spasticity (rho=0.36, p=0.001) and global benefit (rho=0.45, p<0.001), but not with other outcome measures. Goal-attainment scaling T-scores were lower than expected (median 32.4, interquartile range 29.6-40.6). Goals related to passive tasks were more often achieved than those reflecting active function. Qualitative analysis of goals nevertheless demonstrated change over a wide area of patient experience. CONCLUSION Goal-attainment scaling provided a responsive measure for evaluating focal intervention for upper limb spasticity, identifying outcomes of importance to the individual/carers, not otherwise identifiable using standardized measures.


Stroke | 2010

Randomized Trial of Treadmill Walking With Body Weight Support to Establish Walking in Subacute Stroke The MOBILISE Trial

Louise Ada; Catherine M. Dean; Meg E. Morris; Judy E Simpson; Pesi Katrak

Background and Purpose— The main objective of this randomized trial was to determine whether treadmill walking with body weight support was effective at establishing independent walking more often and earlier than current physiotherapy intervention for nonambulatory stroke patients. Methods— A randomized trial with concealed allocation, blinded assessment, and intention-to-treat analysis was conducted. One hundred twenty-six stroke patients who were unable to walk were recruited and randomly allocated to an experimental or a control group within 4 weeks of stroke. The experimental group undertook up to 30 minutes per day of treadmill walking with body weight support via an overhead harness whereas the control group undertook up to 30 minutes of overground walking. The primary outcome was the proportion of participants achieving independent walking within 6 months. Results— Kaplan–Meier estimates of the proportion of experimental participants who achieved independent walking were 37% compared with 26% of the control group at 1 month, 66% compared with 55% at 2 months, and 71% compared with 60% at 6 months (P=0.13). The experimental group walked 2 weeks earlier, with a median time to independent walking of 5 weeks compared to 7 weeks for the control group. In addition, 14% (95% CI, −1–28) more of the experimental group were discharged home. Conclusions— Treadmill walking with body weight support is feasible, safe, and tends to result in more people walking independently and earlier after stroke. Trial Registration— NNClinicalTrial.gov (NCT00167531).


The Australian journal of physiotherapy | 2000

Examination of shoulder positioning after stroke : a randomised controlled pilot trial

Catherine M. Dean; Fiona Mackey; Pesi Katrak

Shoulder pain and stiffness is a serious problem in patients following stroke. The purpose of this study was to investigate the effect of a shoulder positioning protocol on shoulder joint pain and range in the affected upper limb. Twenty-eight subjects were randomly assigned to the experimental or control groups and participated in a multidisciplinary rehabilitation program. In addition, the experimental group received prolonged positioning of the shoulder daily for six weeks. Resting pain, pain on dressing, pain-free active abduction and passive external rotation range were measured on entry to the study and after six weeks. Twenty-three subjects completed the study. The differences between the groups were not statistically significant (p < 0.05), however, because of low statistical power the results are inconclusive.


Journal of Physiotherapy | 2010

Treadmill walking with body weight support in subacute non-ambulatory stroke improves walking capacity more than overground walking: a randomised trial

Catherine M. Dean; Louise Ada; Julie Bampton; Meg E. Morris; Pesi Katrak; Stephanie Potts

QUESTIONS Is treadmill walking with body weight support during inpatient rehabilitation detrimental to walking quality compared with assisted overground walking? Does it result in better walking capacity, perception of walking or community participation? DESIGN Analysis of secondary outcomes of a randomised trial with concealed allocation, assessor blinding and intention-to-treat analysis. PARTICIPANTS 126 patients unable to walk within 4 weeks of a stroke who were undergoing inpatient rehabilitation. INTERVENTION The experimental group undertook up to 30 minutes of treadmill walking with body weight support via an overhead harness per day while the control group undertook up to 30 minutes of overground walking. OUTCOME MEASURES The secondary outcomes were walking quality and capacity, walking perception, community participation and falls. RESULTS Six months after entering the study, there was no difference between the groups of independent walkers in terms of speed (MD 0.10 m/s, 95% CI -0.06 to 0.26) or stride (MD 6 cm, 95% CI -7 to 19). The independent walkers in the experimental group walked 57 m further (95% CI 1 to 113) in the 6 min walk than those in the control group. The experimental group (walkers and non-walkers) rated their walking 1 point out of 10 (95% CI 0.1 to 1.9) higher than the control group. There was no difference between the groups in community participation or number of falls. CONCLUSION Treadmill training with body weight support results in better walking capacity and perception of walking compared to overground walking without deleterious effects on walking quality.


Pm&r | 2009

Do Stroke Patients With Intracerebral Hemorrhage Have a Better Functional Outcome Than Patients With Cerebral Infarction

Pesi Katrak; Deborah Black; Victoria Peeva

To compare the functional outcome of stroke patients with cerebral infarction (CI) and intracerebral hemorrhage (ICH) after rehabilitation.


International Journal of Stroke | 2015

The efficacy of Wii-based Movement Therapy for upper limb rehabilitation in the chronic poststroke period: a randomized controlled trial.

Penelope A. McNulty; Angelica G. Thompson-Butel; Steven Faux; Gaven G. Lin; Pesi Katrak; Laura R. Harris; Christine T. Shiner

Background More effective and efficient rehabilitation is urgently needed to address the prevalence of unmet rehabilitation needs after stroke. This study compared the efficacy of two poststroke upper limb therapy protocols. Aims and/or hypothesis We tested the hypothesis that Wii-based movement therapy would be as effective as modified constraint-induced movement therapy for post-stroke upper-limb motor rehabilitation. Methods Forty-one patients, 2–46 months poststroke, completed a 14-day program of Wii-based Movement Therapy or modified Constraint-induced Movement Therapy in a dose-matched, assessor-blinded randomized controlled trial, conducted in a research institute or patients homes. Primary outcome measures were the Wolf Motor Function Test timed-tasks and Motor Activity Log Quality of Movement scale. Patients were assessed at prebaseline (14 days pretherapy), baseline, post-therapy, and six-month follow-up. Data were analyzed using linear mixed models and repeated measures analysis of variance. Results There were no differences between groups for either primary outcome at any time point. Motor function was stable between prebaseline and baseline (P > 0·05), improved with therapy (P < 0·001); and improvements were maintained at six-months (P > 0·05). Wolf Motor Function Test timed-tasks log times improved from 2·1 ± 0·22 to 1·7 ± 0·22 s after Wii-based Movement Therapy, and 2·6 ± 0·23 to 2·3 ± 0·24 s after modified Constraint-induced Movement Therapy. Motor Activity Log Quality of Movement scale scores improved from 67·7 ± 6·07 to 102·4 ± 6·48 after Wii-based Movement Therapy and 64·1 ± 7·30 to 93·0 ± 5·95 after modified Constraint-induced Movement Therapy (mean ± standard error of the mean). Patient preference, acceptance, and continued engagement were higher for Wii-based Movement Therapy than modified Constraint-induced Movement Therapy. Conclusions This study demonstrates that Wii-based Movement Therapy is an effective upper limb rehabilitation poststroke with high patient compliance. It is as effective as modified Constraint-induced Movement Therapy for improving more affected upper limb movement and increased independence in activities of daily living.


Muscle & Nerve | 2013

Botulinum toxin modulates cortical maladaptation in post-stroke spasticity.

William Huynh; Arun V. Krishnan; Cindy S.-Y. Lin; Steve Vucic; Pesi Katrak; Michael Hornberger; Matthew C. Kiernan

Introduction: Maladaptive plasticity involving the unaffected hemisphere (UH) in stroke patients may contribute to post‐stroke deficits, including spasticity. We investigated the central and peripheral effects of botulinum toxin in post‐stroke spasticity to determine whether there is modulation of cortical processes in the UH. Methods: Transcranial magnetic stimulation and peripheral nerve excitability studies were undertaken in 5 stroke patients with upper limb spasticity before (T1) and 6 weeks after (T2) botulinum injection. Results: Transcranial magnetic stimulation demonstrated inexcitable motor cortices of the affected hemisphere at T1 and T2, and short‐interval intracortical inhibition (SICI) in the UH was significantly reduced at T1. At T2, SICI in the UH increased significantly compared with T1, normalizing to controls, and was found to be associated with clinical improvements in spasticity. Peripheral excitability parameters were unchanged after injection. Conclusion: Cortical excitability changes were demonstrated in UH, suggesting that the clinical benefits of botulinum toxin relate to modulation of abnormal central reorganization (maladaptive plasticity) in post‐stroke spasticity. Muscle Nerve, 2013


Archives of Physical Medicine and Rehabilitation | 2003

Rehabilitation After Total Femur Replacement: A Report of 2 Cases

Pesi Katrak; Bridget O’Connor; Ian Woodgate

We describe the rehabilitation of 2 patients who underwent total femur replacement after neoplastic involvement of the bone. In the past, patients with cancer of the femur were generally advised to undergo a hip disarticulation or transfemoral amputation. It is now feasible to salvage the limb in selected patients, by excising the entire femur together with any contiguous soft tissue tumor and replacing it with an endoprosthesis. The surgical literature contains a number of reports on total femur replacement, which mention the rehabilitation aspects only briefly, but we found nothing on this relatively uncommon form of surgery in the rehabilitation literature. Physiotherapy techniques such as active assisted exercises, isometric exercises, and hydrotherapy are extremely useful during the early phase of rehabilitation to facilitate a graduated strengthening program. Certain exercises, such as active hip abduction or knee flexion, may not be permitted for several weeks to protect muscles that have been reattached to the prosthesis. Partial weight bearing may be required to allow incorporation of bone allograft around the prosthetic hip joint. Because of these factors patients with total femur replacement may need a longer period of rehabilitation (6-8wk) than patients with total hip or knee replacement. Patients with total femur replacement can, however, achieve full independence with an appropriate rehabilitation program.


The Australian journal of physiotherapy | 2001

Practical issues in retraining walking in severely disabled patients using treadmill and harness support systems

Sarah Crompton; Manisha Khemlani; Julia Batty; Louise Ada; Catherine M. Dean; Pesi Katrak

In the last decade, a novel form of gait training using a treadmill and partial body weight support through an overhead harness has been described for patients with neurological impairments caused by stroke and spinal cord injury (for review see Barbeau et al 1998). The overhead harness attached over a treadmill decreases postural demands and supports part of the body weight, which allows the individual to walk without collapse of the affected lower limb or limbs. One of the barriers to completion of walking practice by severely disabled patients is that marked muscle weakness and poor co–ordination results in an inability to practice the whole task without considerable assistance. Patients often require the assistance of two or more people to stand and take a few steps. The benefit of treadmill walking with body weight support via an overhead harness for these patients is that it provides the opportunity to complete larger amounts of practice of the whole task, early after neurological impairment.

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Leo Davies

Royal Prince Alfred Hospital

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Paul McCrory

Florey Institute of Neuroscience and Mental Health

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