NIBS With mCIMT for Motor and Functional Upper Limb Recovery in Stroke Patients.

Stroke Clinical Trial

Official title: Non-invasive Brain Stimulation Combined With Modified Constraint Induced Movement Therapy for Motor and Functional Upper Limb Recovery of Patients With Sub-acute Stroke: Multicenter Randomized Clinical Trial

Status Completed

Clinical Trial Summary

Stroke is one of the leading causes of serious long-term impairment. According to the estimates, 12,500 people suffer a new or recurrent ischemic stroke in Chile annually, which shows the magnitude of the problem. Motor impairment of the upper limb (UL) stands out as the principal sequel after a CVA (50% of the patients experience it), and the Constraint-Induced Movement Therapy (CIMT) is the rehabilitation approach that shows more scientific evidence today. Even though patients reach certain recuperation levels through this approach, results are still insufficient since 50-80% of the patients continue having upper limb motor impairment after completing standard rehabilitation. Because of this, it is pertinent to conduct research to explore new rehabilitation strategies to reduce the impairment indexes and to provide information for decision making based on evidence.

Recent studies on functional neuroimaging propose that there is an abnormal balance in the motor cortex excitability after stroke - relative under-excitability in the affected hemisphere and over-excitability in the unaffected hemisphere (with the consequent inhibitory influence on ipsilesional regions) in stroke patient with moderate motor impairment. This imbalance in the hemispheres function would limit the possibilities of a greater recovery. Then, in order to reestablish brain balance, the investigators proposed that the early introduction of noninvasive techniques of brain stimulation, such as tDCS, to the motor rehabilitation training could promote improvement of upper limb function in patients with stroke. However, we lack studies that confirm the benefits of using these techniques, define the most appropriate protocols, and determine what patients and under which evolving stages would be the best candidates for treatment.

This study aims to "compare the effectiveness of seven days of bi-hemispheric tDCS, both active and sham, combined with modified CIMT (mCIMT) in the motor and functional recovery of the hemiparetic upper limb in hospitalized patients with subacute unihemispheric stroke at Hospital Clínico de la Universidad de Chile and Hospital San José". This comparison responds to the hypothesis that patients who receive bi-hemispheric and active tDCS combined with mCIMT (experimental group) get at least 30% more recovery of the paretic upper limb compared to the control group who receive sham bi-hemispheric tDCS plus mCIMT after a protocol of seven days treatment.

Clinical Trial Description

To test this hypothesis, the investigators propose to carry out a sham randomized multicenter double blind clinical trial. This trial considers seven continuous days of treatment when the participants with hemiparesis as a result of a stroke will be assigned to one of the treatment groups: bi-hemispheric tDCS combined with mCIMT or bi-hemispheric sham tDCS combined with mCIMT. Besides collecting demographic and clinical info from the subjects, the investigators will assess the patients using upper limb scales of functional motor recovery and an evaluation of their functional independence in basic activities of daily living (ADLs). STATA 14.0 software will be used for data analysis.

To date, no study has tested the efficacy of early bi-hemispheric stimulation in combination with mCIMT in subacute hospitalized stroke patients. ;

Related Conditions & MeSH terms

• Electric Stimulation
• Muscle Weakness
• Occupational Therapy
• Paresis
• Stroke
• Upper Extremity Paresis

• NCT number: NCT03452254
• Study type: Interventional
• Source: University of Chile
• Status: Completed
• Phase: N/A
• Start date: June 4, 2018
• Completion date: June 30, 2021