title: Transcranial Motor Evoked Potentials of Lower Limbs Can Prognosticate Ambulation in Hemiplegic Stroke Patients.
abstract: OBJECTIVE
  To examine the association between motor evoked potentials (MEPs) in lower limbs and ambulatory outcomes of hemiplegic stroke patients.
  
  
  METHODS
  Medical records of hemiplegic patients with the first ever stroke who received inpatient rehabilitation from January 2013 to May 2014 were reviewed. Patient who had diabetes, quadriplegia, bilateral lesion, brainstem lesion, severe musculoskeletal problem, and old age over 80 years were excluded. MEPs in lower limbs were measured when they were transferred to the Department of Rehabilitation Medicine. Subjects were categorized into three groups (normal, abnormal, and absent response) according to MEPs findings. Berg Balance Scale (BBS) and Functional Ambulation Category (FAC) at initial and discharge were compared among the three groups by one-way analysis of variance (ANOVA). Correlation was determined using a linear regression model.
  
  
  RESULTS
  Fifty-eight hemiplegic patients were included. BBS and FAC at discharge were significantly (ANOVA, p<0.001) different according to MEPs findings. In linear regression model of BBS and FAC using stepwise selection, patients' age (p<0.01), BBS at admission (p<0.01), and MEPs (p<0.01) remained significant covariates. In regression assumption model of BBS and FAC at admission, MEPs and gender were significant covariates.
  
  
  CONCLUSIONS
  Initial MEPs of lower limbs can prognosticate the ambulatory outcomes of hemiplegic patients.
authors.affiliation: Department of Rehabilitation Medicine, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Pyoungsik
authors.identifier: 0000-0001-6677-1789
authors.initials: P
authors.lastname: Hwang
authors.affiliation: Department of Rehabilitation Medicine, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Min Kyun
authors.identifier: 0000-0002-2548-545X
authors.initials: MK
authors.lastname: Sohn
authors.affiliation: Department of Rehabilitation Medicine, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Sungju
authors.identifier: 0000-0002-9400-9609
authors.initials: S
authors.lastname: Jee
authors.affiliation: Department of Rehabilitation Medicine, Chungnam National University School of Medicine, Daejeon, Korea.
authors.forename: Hyunkeun
authors.identifier: 0000-0002-9306-6011
authors.initials: H
authors.lastname: Lee
keywords: Gait; Hemiplegia; Motor evoked potentials; Prognosis; Stroke