Spinal Stimulation During Exercise in Heart Failure

NCT ID: NCT02659202

Last Updated: 2024-05-22

Study Results

Results available

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Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

NA

Total Enrollment

7 participants

Study Classification

INTERVENTIONAL

Study Start Date

2016-06-30

Study Completion Date

2018-03-23

Brief Summary

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The purpose of this proposal is to determine whether epidural spinal cord stimulation can modulate cardiovascular control during exercise in Heart Failure patients.

Detailed Description

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Forty Heart Failure (\>18 yrs. of age) will be recruited. The study will include a total of 2 visits. All experiments will take place at the Mayo Clinic; at the outpatient radiology for MRI screening, the Charlton Clinical Research Unit (CRU) for surgical suite for spinal cord stimulation placement and the Saint Mary's Hospital Clinical Research Unit for clinical exercise laboratory for the exercise protocol and overnight stay.

Study visit 1 will include eligibility screening, consenting process, completion of a health questionnaire and performance of a peak oxygen consumption (VO2) test. Additionally, subjects will undergo a screening lumbar MRI to ensure that there are no anatomical anomalies in or around the epidural area consistent with standard clinical practice for epidural stimulator lead placement associated with chronic pain syndromes.

Study visit 2 will include an overnight stay in the Saint Mary's Hospital Clinical Research Unit. Patients will check in to the CRU in the morning of day 1, visit 2. Prior to placement of stimulating electrodes an international normalized ratio (INR) will be checked to ensure safe clotting. An anesthesiologist will place the electrodes in the lumbar/thoracic epidural space in a manner that is standard for the clinical placement of temporary electrodes in humans. The participants will then transfer to the clinical exercise laboratory to start the exercise protocol. Participants will rest 15 minutes prior to starting exercise. Exercise will take place on a vertical bike where they will perform a submaximal cycling exercise at 30% of peak work for 29 minutes. Thigh cuffs will be placed on thigh bilaterally and inflated intermittently to pressures of 80m mmHg. After the testing is complete, participants will return to their room in the Clinical Research Unit for the rest of the day and sty over night.

On day two of visit two, participants will repeat the testing from day one with new randomization to determine reliability of testing performed on day one. After the exercise on day two of visit two, the spinal cord stimulator leads and radial arterial catheter will be removed.

Conditions

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Heart Failure

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Precision Spinal Cord Stimulator System

Intervention:the precision system will consist of a pulse generator that will not be implanted, temporary percutaneous leads lead extensions, each packaged as a separate kit.

Group Type EXPERIMENTAL

Precision Spinal Cord Stimulator System

Intervention Type DEVICE

The precision system will consist of a pulse generator that will not be implanted, temporary percutaneous leads, surgical paddle leads and lead extensions, each packaged as a separate kit.

Interventions

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Precision Spinal Cord Stimulator System

The precision system will consist of a pulse generator that will not be implanted, temporary percutaneous leads, surgical paddle leads and lead extensions, each packaged as a separate kit.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Heart Failure patients with reduced ejection fraction:
* History of ischemic or idiopathic dilated cardiomyopathy (duration \> 1yr.) stable for \> 3mo and New York Heart Association Class I-III
* Not pacemaker dependent
* Body Mass Index ≤35
* Ejection Fraction \< 40%
* Current nonsmokers with \< 15 pack year history
* Able to exercise

Exclusion Criteria

* History of cardiopulmonary disorders and dangerous arrhythmias
* Pregnant women
* Taking prescribed opioid medications or have had a fusion or laminectomy at L3 or above
* Patients with a recent drug-eluding stent
* History of spinal stenosis, lumbar radiculopathy, or peripheral neuropathy
* Must not currently be taking blood thinners or anticoagulant medications.
Minimum Eligible Age

18 Years

Maximum Eligible Age

90 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Mayo Clinic

OTHER

Sponsor Role lead

Responsible Party

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Bruce Johnson

PI

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Bruce Johnson, PhD

Role: PRINCIPAL_INVESTIGATOR

Mayo Clinic

Locations

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Mayo Clinic in Rochester

Rochester, Minnesota, United States

Site Status

Countries

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United States

Provided Documents

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Document Type: Study Protocol and Statistical Analysis Plan

View Document

Related Links

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Other Identifiers

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14-002521

Identifier Type: -

Identifier Source: org_study_id

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