The primary goals of stroke management are to reduce brain injury, promote maximum recovery following a stroke, and reduce the risk of another stroke. Rapid detection and appropriate emergency medical care are essential for optimizing health outcomes. When available, people with stroke are admitted to an acute stroke unit for treatment. These units specialize in providing medical and surgical care aimed at stabilizing the person's medical status. Standardized assessments are also performed to aid in the development of an appropriate care plan.Lindsay MP, Gubitz G, Bayley M, Hill MD, Davies-Schinkel C, Singh S, and Phillips S. Canadian Best Practice Recommendations for Stroke Care (Update 2010). On behalf of the Canadian Stroke Strategy Best Practices and Standards Writing Group. 2010; Ottawa, Ontario Canada: Canadian Stroke Network. Current research suggests that stroke units may be effective in reducing in-hospital fatality rates and the length of hospital stays.
Once a person is medically stable, the focus of their recovery shifts to rehabilitation. Some people are transferred to in-patient rehabilitation programs, while others may be referred to out-patient services or home-based care. In-patient programs are usually facilitated by an interdisciplinary team that may include a physician, nurse, pharmacist, physical therapist, occupational therapist, speech and language pathologist, psychologist, and recreation therapist. The patient and their family/caregivers also play an integral role on this team. Family/caregivers that are involved in the patient care tend to be prepared for the caregiving role as the patient transitions from rehabilitation centers. While at the rehabilitation center, the interdisciplinary team makes sure that the patient attains their maximum functional potential upon discharge. The primary goals of this sub-acute phase of recovery include preventing secondary health complications, minimizing impairments, and achieving functional goals that promote independence in activities of daily living.
In the later phases of stroke recovery, people with a history of stroke are encouraged to participate in secondary prevention programs for stroke. Follow-up is usually facilitated by the person's primary care provider.
The initial severity of impairments and individual characteristics, such as motivation, social support, and learning ability, are key predictors of stroke recovery outcomes. Responses to treatment and overall recovery of function are highly dependent on the individual. Current evidence indicates that most significant recovery gains will occur within the first 12 weeks following a stroke.
For most of the last century, people were discouraged from being active after a stroke. Around the 1950s, this attitude changed, and health professionals began prescription of therapeutic exercises for stroke patient with good results. At that point, a good outcome was considered to be achieving a level of independence in which patients are able to transfer from the bed to the wheelchair without assistance.
In the early 1950s, Twitchell began studying the pattern of recovery in stroke patients. He reported on 121 patients whom he had observed. He found that by four weeks, if there is some recovery of hand function, there is a 70% chance of making a full or good recovery. He reported that most recovery happens in the first three months, and only minor recovery occurs after six months. More recent research has demonstrated that significant improvement can be made years after the stroke.
Around the same time, Brunnstrom also described the process of recovery, and divided the process into seven stages. As knowledge of the science of brain recovery improved, intervention strategies have evolved. Knowledge of strokes and the process of recovery after strokes has developed significantly in the late 20th century and early 21st century.
Eventually, researchers began to apply his technique to stroke patients, and it came to be called constraint-induced movement therapy. Notably, the initial studies focused on chronic stroke patients who were more than 12 months past their stroke. This challenged the belief held at that time that no recovery would occur after one year. The therapy entails wearing a soft mitt on the good hand for 90% of the waking hours, forcing use of the affected hand. The patients undergo intense one-on-one therapy for six to eight hours per day for two weeks.
Evidence that supports the use of constraint induced movement therapy has been growing since its introduction as an alternative treatment method for upper limb motor deficits found in stroke populations. Recently, constraint induced movement therapy has been shown to be an effective rehabilitation technique at varying stages of stroke recovery to improve upper limb motor function and use during activities of daily living. These may include, but are not limited to, eating, dressing, and hygiene activities.
Constraint induced movement therapy has recently been modified to treat aphasia in patients post CVA as well. This treatment intervention is known as Constraint Induced Aphasia Therapy (CIAT). The same general principals apply, however in this case, the client is constricted from using compensatory strategies to communicate such as gestures, writing, drawing, and pointing, and are encouraged to use verbal communication. Therapy is typically carried out in groups and barriers are used so hands, and any compensatory strategies are not seen.
Electromechanical and robot-assisted arm training may improve arm function (measured using the 'arm function outcome measure') and may significantly improve activities of daily living (ADL) scores.
Induction of neurogenesis (development of new neurons) is another possible mechanism of neurorestoration; however its correlation with functional improvement after stroke is not well established. The inducted cells likely originate from the ventricular zone, subventricular zone and choroid plexus, and migrate to the areas in their respective hemispheres which are damaged. Unlike the induction of neurogenesis, the induction of angiogenesis (development of new blood vessels) by MSCs has been associated with improvements in brain function after ischemic strokes and is linked to improved neuronal recruitment. In addition, synaptogenesis (formation of new synapses between neurons) has been shown to increase after MSC treatment; this combination of improved neurogenesis, angiogenesis and synaptogenesis may lead to a more significant functional improvement in damaged areas as a result of MSC treatment.
MSC treatment also has shown to have various neuroprotective effects, including reductions in apoptosis, inflammation and demyelination, as well as increased astrocyte survival rates. MSC treatment also appears to improve the control of cerebral blood flow and blood–brain barrier permeability, as well as what is currently thought to be the most important mechanism of MSC treatment after stroke, the activation of endogenous neuroprotection and neurorestoration pathways by the release of cytokines and trophic factors.
Although activation of endogenous neuroprotection and neurorestoration probably has a major part in the improvement of brain function after stroke, it is likely that the functional improvements as a result of MSC treatment are due to combined action via multiple cellular and molecular mechanisms to affect neurorestoration and neuroprotection, rather than just a single mechanism. These effects are also modulated by key variables, including the number of and type of MSCs used, timing of treatment relative to when the patient's stroke occurred, route of delivery of the MSCs, as well as patient variables (e.g. age, underlying conditions).
It has been estimated that approximately 65% of individuals develop spasticity following stroke, and studies have revealed that approximately 40% of stroke patients may still have spasticity at 12 months post-stroke. The changes in muscle tone probably result from alterations in the balance of inputs from reticulospinal and other descending pathways to the motor and interneuronal circuits of the spinal cord, and the absence of an intact corticospinal system. In other words, there is damage to the part of the brain or spinal cord that controls voluntary movement.
Various means are available for the treatment of the effects of the upper motor neuron syndrome. These include: exercises to improve strength, control and endurance, nonpharmacologic therapies, oral drug therapy, intrathecal drug therapy, injections, and surgery.Mayer et al. (September 2002) "Spasticity: Etiology, Evaluation, Management and the Role of Botulinum Toxin" We Move
While Landau suggests that researchers do not believe that treating spasticity is worthwhile, many scholars and clinicians continue to attempt to manage/treat it.
Another group of researchers concluded that while spasticity may contribute to significant motor and activity impairments post-stroke, the role of spasticity has been overemphasized in stroke rehabilitation.
In a survey done by the National Stroke Association, while 58 percent of survivors in the survey experienced spasticity, only 51 percent of those had received treatment for the condition.
Muscles with severe impairment are likely to be more limited in their ability to exercise and may require help to do this. They may require additional interventions, to manage the greater neurological impairment and also the greater secondary complications. These interventions may include serial casting, flexibility exercise such as sustained positioning programs, and patients may require equipment, such as using a standing frame to sustain a standing position. Applying specially made Lycra garments may also be beneficial.
Unaddressed spasticity will result in the maintenance of abnormal resting limb postures which can lead to contracture formation. In the arm, this may interfere with hand hygiene and dressing, whereas in the leg, abnormal resting postures may result in difficulty transferring. In order to help manage spasticity, physiotherapy interventions should focus on modifying or reducing muscle tone. Strategies include mobilizations of the affected limbs early in Physical therapy, along with elongation of the spastic muscle and sustained stretching. In addition, the passive manual technique of rhythmic rotation can help to increase initial range. Activating the antagonist (muscle) in a slow and controlled movement is a beneficial training strategy that can be used by post-stroke individuals. Splinting, to maintain muscle stretch and provide tone inhibition, and cold (i.e. in the form of ice packs), to decrease neural firing, are other strategies that can be used to temporarily decrease the extent of spasticity.
The exact cause of subluxation in post-stroke patients is unclear but appears to be caused by weakness of the musculature supporting the shoulder joint. The shoulder is one of the most mobile joints in the body. To provide a high level of mobility the shoulder sacrifices ligamentous stability and as a result relies on the surrounding musculature (i.e., rotator cuff muscles, latissimus dorsi, and deltoid muscle) for much of its support. This is in contrast to other less mobile joints such as the knee and hip, which have a significant amount of support from the joint capsule and surrounding ligaments. If a stroke damages the upper motor neurons controlling muscles of the upper limb, weakness and paralysis, followed by spasticity occurs in a somewhat predictable pattern. The muscles supporting the shoulder joint, particularly the supraspinatus and posterior deltoid become flaccid and can no longer offer adequate support leading to a downward and outward movement of arm at the shoulder joint causing tension on the relatively weak joint capsule. Other factors have also been cited as contributing to subluxation such as pulling on the hemiplegic arm and improper positioning.
Diagnosis can usually be made by palpation or by feeling the joint and surrounding tissues, although there is controversy as to whether or not the degree of subluxation can be measured clinically. If shoulder subluxation occurs, it can become a barrier to the rehabilitation process. Treatment involves measures to support the subluxed joint such as taping the joint, using a lapboard or armboard. A shoulder sling may be used, but is controversial and a few studies have shown no appreciable difference in range-of-motion, degree of subluxation, or pain when using a sling. A sling may also contribute to contractures and increased flexor tone if used for extended periods of time as it places the arm close to the body in adduction, internal rotation and elbow flexion. Use of a sling can also contribute to learned nonuse by preventing the functional and spontaneous use of the affected upper extremity. That said, a sling may be necessary for some therapy activities. Slings may be considered appropriate during therapy for initial transfer and gait training, but overall use should be limited. As the patient begins to recover, spasticity and voluntary movement of the shoulder will occur as well as reduction in the shoulder subluxation. Slings are of no value at this point.
Functional electrical stimulation (FES) has also shown promising results in treatment of subluxation, and reduction of pain, although some studies have shown a return of pain after discontinuation of FES. More recent research has failed to show any reduction of pain with the use of FES.
Logical treatment consists of preventive measures such as early range of motion, proper positioning, passive support of soft tissue structures and possibly early re-activation of shoulder musculature using functional electrical stimulation. Aggressive exercises such as overhead pulleys should be avoided with this population.
The current body of evidence is uncertain on the efficacy of cognitive rehabilitation for reducing the disabling effects of neglect and increasing independence remains unproven. However, there is limited evidence that cognitive rehabilitation may have an immediate beneficial effect on tests of neglect. Overall, no rehabilitation approach can be supported by evidence for spatial neglect.
Rehabilitation for improving automobile driving after stroke
The current body of evidence is uncertain whether the use of rehabilitation can improve on-road driving skills following stroke. There is limited evidence that training on a driving simulator will improve performance on recognizing road signs after training. The findings are based on low-quality evidence as further research is needed involving large numbers of participants.
Yoga for stroke rehabilitation
Based on low quality evidence, it is currently uncertain whether yoga has a significant benefit for stroke rehabilitation on measures of quality of life, balance, strength, endurance, pain, and disability scores. Yoga may reduce anxiety and could be included as part of patient-centred stroke rehabilitation. Further research is needed assessing the benefits and safety of yoga in stroke rehabilitation.
Action observation for upper limb rehabilitation after stroke
The latest scientific evidence indicates that action observation is beneficial in improving upper limb and hand function in patients with stroke. Thus, action observation therapy is generally associated with better arm and hand function, with no significant adverse events. The findings are based on low to moderate quality evidence.
Cognitive rehabilitation for attention deficits following stroke
The current body of scientific evidence is uncertain on the effectiveness of cognitive rehabilitation for attention deficits in patients following stroke. While there may be an immediate effect after treatment on attention, the findings are based on low to moderate quality and small number of studies. Further research is needed to assess whether the effect can be sustained in day-to-day tasks requiring attention.
Motor imagery for gait rehabilitation after stroke
The latest evidence supports the short-term benefits of motor imagery (MI) on walking speed in individuals who have had a stroke, in comparison to other therapies. MI does not improve motor function after stroke and does not seem to cause significant adverse events. The findings are based on low-quality evidence as further research is needed to estimate the effect of MI on walking endurance and the dependence on personal assistance.
Unlike many effects of stroke, where the clinician is able to judge the particular area of the brain that a stroke has injured by certain signs or symptoms, the causation of apraxia is less clear. A common theory is that the part of the brain that contains information for previously learned skilled motor activities has been either lost or cannot be accessed. The condition is usually due to an insult to the dominant hemisphere of the brain. More often this is located in the frontal lobe of the left hemisphere of the brain. Treatment of acquired apraxia due to stroke usually consists of physical, occupational, and speech therapy. The Copenhagen Stroke Study, which is a large important study published in 2001, showed that out of 618 stroke patients, manual apraxia was found in 7% and oral apraxia was found in 6%. Both manual and oral apraxia were related to increasing severity of stroke. Oral apraxia was related with an increase in age at the time of the stroke. There was no difference in incidence among gender. It was also found that the finding of apraxia has no negative influence on ability to function after rehabilitation is completed. The National Institute of Neurological Disorders and Stroke (NINDS) is currently sponsoring a clinical trial to gain an understanding of how the brain operates while carrying out and controlling voluntary motor movements in normal subjects. The objective is to determine what goes wrong with these processes in the course of acquired apraxia due to stroke or brain injury.
Treatment in the acute setting is mostly focused on symptomatic management. After initial treatment in the hospital, some patients will need short-term placement in a nursing home or rehabilitation facility before going home. In hospital settings the doctors work with speech pathologists in issues like these. Typically, a commonly used tool to assess the degree of severity of dysphagia and speech issues is the Barnes Jewish Hospital Stroke Dysphagia Screen, which offers a validated guide to assessing plan of action (solid food diet, all liquid diet, IV hydration, etc.) for the patient while in the hospital and the proper course of action in the outpatient setting. Rehabilitation in Wallenberg's Syndrome focuses on improving balance, coordination, working on activities of daily living, and improving speech and swallowing function. Severe nausea and vertigo can be present and limit progress in rehabilitation and recovery. Symptomatic treatment with and medications for the hiccups are important. Commonly used anti-emetics include ondansetron, metoclopramide, prochlorperazine, and promethazine. These medications are also used to treat hiccups, along with chlorpromazine. There are case reports of other medications useful in treating hiccups in Wallenberg's Syndrome including baclofen and anti-convulsant. The prognosis for someone with lateral medullary syndrome depends upon the size and location of damaged area of the brain stem. Some individuals recover quickly while others may have significant neurological disabilities for months to years after the initial injury.
The first studies to look for an association between specific stroke lesions and the occurrence of depression reported a correlation between left frontal lesions and major depression. Damage to the frontal noradrenergic, dopaminergic, and Serotonin projections were thought to cause a depletion of , leading to depression. However, more recent studies have demonstrated that the anatomic aspects of a lesion do not necessarily correlate with the occurrence of depression. Other psychological factors can lead to the development of depression including personal and social losses related to the physical disabilities often caused by a stroke.
The incidence of post-stroke depression peaks at 3–6 months and usually resolves within 1–2 years after the stroke, although a minority of patients can go on to develop chronic depression. The diagnosis of post-stroke depression is complicated by other consequences of stroke such as fatigue and psychomotor retardation – which do not necessarily indicate the presence of depression. Loss of interest in activities and relationships should prompt an evaluation for depression.
Traditionally, tricyclic antidepressants (TCAs), such as nortriptyline, have been used in the treatment of post-stroke depression. More recently, the selective serotonin reuptake inhibitors (SSRIs), such as fluoxetine and citalopram, have become the pharmacologic therapy of choice due to the lower incidence of adverse effect. Also, psychologic treatment such as cognitive behavioral therapy, group therapy, and family therapy are reported to be useful adjuncts to treatment.
Overall, the development of post-stroke depression can play a significant role in a patient's recovery from a stroke. The severity of post-stroke depression has been associated with severity of impairment in activities of daily living (ADLs). By effectively treating depression, patients experience a greater recovery of basic ADLs such as dressing, eating and ambulating, as well as instrumental ADLs, such as the ability to take care of financial and household matters. In essence, recognition and treatment of post-stroke depression leads to greater functional ability for the patient over time.
There has not been any medication developed yet to treat cognitive deficits resulting from strokes. Although some drugs have shown to be helpful with executive function problems, neither of them has demonstrated significant effects on activities of daily living. Thus, it is important that more work is done on pharmacotherapy and its potential benefits for patients with cognitive decline after stroke.
Ongoing research has examined the use of cognitive therapy which consists of intense cognitive training. One of the biggest problems of cognitive training is its actual transfer to the real world. Even though some therapies have been proven to produce improvements on specific tasks, the patients did not experience any improvements in their everyday functioning. For this reason, scientific teams have been trying to develop a reliable transfer package that could be used to train and improve instrumental activities of daily living. Daily instrumental activities can be understood as those activities that allow an individual to live independently. Even though they are not necessary for living, however, these activities may significantly improve the quality of life. Examples of these activities include cooking, transportation, laundry, and managing finances.
Nonpharmacologic therapies
Interventions for age-related visual problems in patients with stroke
Physiotherapy
Oral drug therapies
Intrathecal drug therapy
Injections
Surgery
Post-stroke pain syndromes
Hemiplegic shoulder pain
Cause
Pharmacological therapies
Non-pharmacological treatment
Shoulder subluxation
Rehabilitation
Apraxia
Lateral medullary syndrome
Post-stroke depression
Cognitive Impairment and Therapy
Sources
External links
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