Effects of TENS on Myocardial Protection in Patients Undergoing AVR

NCT ID: NCT03859115

Last Updated: 2021-01-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-03-15

Study Completion Date

2021-01-04

Brief Summary

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Patients undergoing aortic valve replacement are randomized to receive TENS (transcutaneous electrical nerve stimulation) or sham stimulation at one arm for 30 min under various anesthetic conditions: no anesthesia (preanesthesia), sevoflurane or propofol anesthesia. Cardioprotective effects of TENS are compared through Langendorff rat heart perfusion system using plasma dialysate from patients.

Detailed Description

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Patients undergoing aortic valve replacement are randomized to one of six groups: preanesthesia-TENS (transcutaneous electrical nerve stimulation), preanesthesia-sham, sevoflurane-TENS, sevoflurane-sham, propofol-TENS, propofol-sham. Patients receive TENS or sham stimulation (without electrical pulse generation) at one arm for 30 min under no anesthesia (preanesthesia) or sevoflurane or propofol anesthesia.

In all patients, blood samples are obtained before and after TENS or sham procedure to make plasma dialysate to perfuse rat hearts subjected to ischemia-reperfusion injury through Langendorff system.

Cardioprotective effects are determined by comparing infarct sizes of rat hearts perfused with human plasma dialysate, which reflects cardioprotective effects of TENS in human subjects. By comparing infarct size differences, the myocardial protective effects of TENS in various anesthetic conditions can be determined in human subjects undergoing aortic valve replacement.

Conditions

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Myocardial Protection

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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preanesthesia-TENS

Patients in preanesthesia-TENS group receive TENS for 30 minutes at one arm before anesthesia.

Group Type ACTIVE_COMPARATOR

TENS (transcutaneous electrical nerve stimulation)

Intervention Type PROCEDURE

transcutaneous nerve stimulation with electrical pulse generation

preanesthesia-sham

Patients in preanesthesia-sham group receive sham stimulation for 30 minutes at one arm before anesthesia.

Group Type SHAM_COMPARATOR

sham intervention

Intervention Type PROCEDURE

sham stimulation without electrical pulse generation

sevoflurane-TENS

Patients in sevoflurane-TENS group receive TENS for 30 minutes at one arm under sevoflurane anesthesia.

Group Type EXPERIMENTAL

TENS (transcutaneous electrical nerve stimulation)

Intervention Type PROCEDURE

transcutaneous nerve stimulation with electrical pulse generation

sevoflurane-sham

Patients in sevoflurane-sham group receive sham stimulation for 30 minutes at one arm under sevoflurane anesthesia.

Group Type ACTIVE_COMPARATOR

sham intervention

Intervention Type PROCEDURE

sham stimulation without electrical pulse generation

propofol-TENS

Patients in propofol-TENS group receive TENS for 30 minutes at one arm under propofol anesthesia.

Group Type EXPERIMENTAL

TENS (transcutaneous electrical nerve stimulation)

Intervention Type PROCEDURE

transcutaneous nerve stimulation with electrical pulse generation

propofol-sham

Patients in propofol-sham group receive sham stimulation for 30 minutes at one arm under propofol anesthesia.

Group Type ACTIVE_COMPARATOR

sham intervention

Intervention Type PROCEDURE

sham stimulation without electrical pulse generation

Interventions

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TENS (transcutaneous electrical nerve stimulation)

transcutaneous nerve stimulation with electrical pulse generation

Intervention Type PROCEDURE

sham intervention

sham stimulation without electrical pulse generation

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* patients undergoing aortic valve replacement

Exclusion Criteria

* co-medications: metformin, nitroglycerine, nicorandil
* discomfort at TENS or loss of intact skin
* uncontrolled hypertension or diabetes mellitus
* severely impaired renal or hepatic function
* peripheral vasculopathy or neuropathy
* did not consent to participate
* pregnancy
Minimum Eligible Age

20 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Seoul National University Hospital

OTHER

Sponsor Role lead

Responsible Party

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Yunseok Jeon

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Yunseok Jeon

Role: PRINCIPAL_INVESTIGATOR

Seoul National University

Locations

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Seoul National University Hospital

Seoul, , South Korea

Site Status

Countries

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South Korea

References

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Cho YJ, Jung DE, Nam K, Bae J, Lee S, Jeon Y. Effects of transcutaneous electrical nerve stimulation on myocardial protection in patients undergoing aortic valve replacement: a randomized clinical trial. BMC Anesthesiol. 2022 Mar 9;22(1):68. doi: 10.1186/s12871-022-01611-x.

Reference Type DERIVED
PMID: 35264104 (View on PubMed)

Other Identifiers

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TENS_AVR

Identifier Type: -

Identifier Source: org_study_id

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