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Can rTMS Enhance Somatosensory Recovery After Stroke?

2022년 4월 4일 업데이트: VA Office of Research and Development
Stroke affects over 795,000 Americans every year and has an enormous impact on the well-being of American Veterans with 6,000 new stroke admissions every year. Many of these stroke survivors are living with disabilities that limit their everyday function. One of the major consequences of stroke is loss of sensation which manifests as inability to perceive touch, temperature, pain or limb movement. Lack of sensation hinders full functional recovery. Current treatments for sensory loss produce only limited improvements and do not achieve full recovery. Therefore, it is critical to develop new therapies to re-train sensory function. The investigators propose to evaluate a novel non-invasive brain stimulation treatment called repetitive Transcranial Magnetic Stimulation (rTMS). The effects of this technique on motor deficits following stroke have been studied, however rTMS for the treatment of sensory loss has not been examined to date. The investigators' study will examine for the first time if rTMS of a sensory brain region can improve sensory function in chronic stroke survivors.

연구 개요

상태

완전한

정황

개입 / 치료

상세 설명

Sensory deficits are present in the majority of stroke survivors. Inability to feel movement, touch or pain impairs the investigators' ability to interact with environment and diminished the quality of life. These sensory deficits significantly impair functional activity and slow down recovery during rehabilitation. Currently available sensory rehabilitation techniques can only partially restore sensory function. The main objective of this study is to test a novel approach to improve sensory function after stroke using non-invasive brain stimulation. This pilot study will measure an immediate effect of different repetitive Transcranial Magnetic Stimulation (rTMS) paradigms in a crossover single session design. The effect of intervention is measured with clinical measures of sensory and motor function and with neurophysiological assessment of sensory pathways. If the concept is demonstrated in this pilot study, then following the lead of other investigations of this type, this pilot will provide the foundation to test the efficacy of a long-term multi-session intervention of combined rTMS and peripherally directed therapy.

연구 유형

중재적

등록 (실제)

20

단계

  • 해당 없음

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 장소

  • 미국
    • Ohio
      • Cleveland, Ohio, 미국, 44106
        • Louis Stokes VA Medical Center, Cleveland, OH

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

18년 이상 (성인, 고령자)

건강한 자원 봉사자를 받아들입니다

아니

연구 대상 성별

모두

설명

Inclusion Criteria:

  • Medically stable at least 6 months after first ever stroke.
  • Sufficient endurance to participate in the study.
  • Cognition sufficiently intact to give valid informed consent to participate.
  • Age > 18years.
  • Ability to follow 2 stage commands.
  • Impaired but not absent ability to feel touch, vibration and movement of the affected arm.

Exclusion Criteria:

  • Acute or progressive cardiac, renal, respiratory, neurological disorders or malignancy.
  • Any psychiatric diagnosis or active psychological condition.
  • History of substance abuse within the last 6 months
  • More than one ischemic stroke or stroke affecting both sides.
  • Claustrophobia, or inability to operate the MRI patient call button.
  • Pregnancy or pregnancy planning during the study period.
  • Lower motor neuron damage or radiculopathy
  • Contraindications for rTMS according to the TMS-use guidelines (Rossi et al 2009).
  • Inability to understand English.
  • Significant neglect for those with left-sided deficits.

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 치료
  • 할당: 무작위
  • 중재 모델: 크로스오버 할당
  • 마스킹: 더블

무기와 개입

참가자 그룹 / 팔
개입 / 치료
다른: High frequency rTMS
Each subject is provided with three different brain stimulation interventions in a single arm, single session crossover design study. One of the sessions was 5 Hz rTMS
다른: repetitive transcranial magnetic stimulation (rTMS)

3 types of interventions on different sessions

  • session 1 - High frequency rTMS targeting contralesional sensory cortex
  • session 2 - Low frequency rTMS
  • session 3 - sham rTMS
다른: peripheral sensory stimulation
peripheral sensory electrical stimulation and vibration of the stroke-affected hand administered concurrently with each rTMS
다른: Low frequency rTMS
Each subject is provided with three different brain stimulation interventions in a single arm, single session crossover design study. One of the sessions was 1 Hz rTMS
다른: repetitive transcranial magnetic stimulation (rTMS)

3 types of interventions on different sessions

  • session 1 - High frequency rTMS targeting contralesional sensory cortex
  • session 2 - Low frequency rTMS
  • session 3 - sham rTMS
다른: peripheral sensory stimulation
peripheral sensory electrical stimulation and vibration of the stroke-affected hand administered concurrently with each rTMS
다른: Sham rTMS
Each subject is provided with three different brain stimulation interventions in a single arm, single session crossover design study. One of the sessions was sham rTMS
다른: repetitive transcranial magnetic stimulation (rTMS)

3 types of interventions on different sessions

  • session 1 - High frequency rTMS targeting contralesional sensory cortex
  • session 2 - Low frequency rTMS
  • session 3 - sham rTMS
다른: peripheral sensory stimulation
peripheral sensory electrical stimulation and vibration of the stroke-affected hand administered concurrently with each rTMS

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Change From Baseline in Two-point Discrimination
기간: up to 1 hour after intervention

Baseline measure is collected immediately before the intervention. There are two data collections following each intervention, one datacollection is immediately after the intervention and the second one is at 1 hour after intervention.

Two-point discrimination was measured with Disk-Criminator disks (Baltimore, MD) by determining the subjects' ability to perceive two points on the disk as two separate points rather than as a single point. The distances between the two points ranged between 2 and 15 mm. One and two sensory points were presented in a pseudo-random order to subjects' 4th digit volar fingertip surface. A threshold is determined when seventy percent accuracy is exhibited for identifying the difference between single versus double point stimulation.
up to 1 hour after intervention
Change From Baseline in N20 Somatosensory Evoked Potential(SSEP) Peak Latency
기간: up to 1 hour after intervention

Baseline measure is collected immediately before the intervention. Following each intervention, data is collected immediately after each intervention and at 1 hour after intervention.

SEPs were recorded with a Cadwell Sierra Wave (Cadwell, Kennewick, WA) (LSCDVAMC) or with Powerlab 4/25T (AD Instruments Inc. Colorado Springs, CO) and a Grass Stimulator (Natus Neurology, Middleton, WI) (CC)44. The recording electrodes (1 cm diameter, gold cup electrodes filled with conductive paste) were placed 2 cm posterior to C3 & C4 (10-20 international system of EEG electrode placement) and the reference electrode at Fz (Figure 1). Stimulus was applied to the median nerve at the wrist. Ground electrodes were placed at the lateral epicondyle of the stimulated arm. The evoked response from 500 stimuli were recorded and averaged for a single trial. Three SEP trials were recorded then analyzed. Latencies (in milliseconds) were determined for N20.
up to 1 hour after intervention

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

VA Office of Research and Development

간행물 및 유용한 링크

연구에 대한 정보 입력을 담당하는 사람이 자발적으로 이러한 간행물을 제공합니다. 이것은 연구와 관련된 모든 것에 관한 것일 수 있습니다.

일반 간행물

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2012년 4월 12일

기본 완료 (실제)

2019년 6월 1일

연구 완료 (실제)

2022년 4월 1일

연구 등록 날짜

최초 제출

2016년 6월 21일

QC 기준을 충족하는 최초 제출

2016년 6월 21일

처음 게시됨 (추정)

2016년 6월 23일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2022년 4월 29일

QC 기준을 충족하는 마지막 업데이트 제출

2022년 4월 4일

마지막으로 확인됨

2022년 4월 1일

추가 정보

이 연구와 관련된 용어

키워드

추가 관련 MeSH 약관

기타 연구 ID 번호

  • N1767-P
  • 12025-H13 (기타 식별자: Louis Stokes Cleveland VA Medical Center IRB)

개별 참가자 데이터(IPD) 계획

개별 참가자 데이터(IPD)를 공유할 계획입니까?

아니요

약물 및 장치 정보, 연구 문서

미국 FDA 규제 의약품 연구

아니

미국 FDA 규제 기기 제품 연구

아니

미국에서 제조되어 미국에서 수출되는 제품

아니

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .

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