Inspired Helium for Ischemic Protection During Knee Replacement Surgery

NCT ID: NCT02012361

Last Updated: 2019-08-12

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

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-10-31

Study Completion Date

2016-08-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

The purpose of this study is to determine whether breathing in helium reduces indications of injury to the skeletal muscle seen in blood tests after knee replacement surgery.

The ability to reduce the risk of skeletal muscle injury may help improve patient safety by providing protection to the area of the body having its blood supply interrupted during a particular surgery.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

During hospitalization, beginning the day after surgery, additional tests will be added to the daily standard of care blood samples. When daily blood samples are not ordered as part of a study participants care after surgery, blood samples only for the study tests, may be done.

Up to 60 study participants will be selected to be in one of two possible groups.

After hospital discharge the study participants physical therapist will be contacted for copies of the notes and reports about the participants progress in physical therapy. This information will be used to evaluate if the different breathing gases have any impact on how quickly people recover after surgery.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Ischemia

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

Control Group

This group will be treated as any other patient would. Their anesthesia will be conducted as per routine with a target Fraction of inspired oxygen concentration (FiO2) of 0.25. During the course of the operation a small muscle biopsy will be collected.

Group Type ACTIVE_COMPARATOR

Control Group

Intervention Type PROCEDURE

This group will be treated as any other patient would. Their anesthesia will be conducted as per routine with a target FiO2 of 0.25, (25%oxygen / 75%nitrogen) the only exception being that they will not be treated with inspired heliox.

Muscle Biopsy

Intervention Type PROCEDURE

During the course of the operation a small muscle biopsy will be collected.

Single-Dose Heliox Group

This group will be treated with a single dose of inspired 75/25 heliox (75% helium 25% oxygen) breathed continuously for 15 minutes prior to the inflation of the surgical tourniquet. During the course of the operation a small muscle biopsy will be collected.

Group Type ACTIVE_COMPARATOR

Single-Dose Heliox Group

Intervention Type PROCEDURE

This group will be treated with a single dose of inspired 75/25 heliox (75% helium 25% oxygen) breathed continuously for 15 minutes over any convenient window prior to the inflation of the surgical tourniquet. This will be the only change in their clinical care. Their anesthesia will be conducted as per routine and as the anesthesia team sees fit with a target FiO2 of 0.25, the only exception being that they will receive 75/25 heliox prior to the inflation of the tourniquet.

Muscle Biopsy

Intervention Type PROCEDURE

During the course of the operation a small muscle biopsy will be collected.

Interventions

Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.

Control Group

This group will be treated as any other patient would. Their anesthesia will be conducted as per routine with a target FiO2 of 0.25, (25%oxygen / 75%nitrogen) the only exception being that they will not be treated with inspired heliox.

Intervention Type PROCEDURE

Single-Dose Heliox Group

This group will be treated with a single dose of inspired 75/25 heliox (75% helium 25% oxygen) breathed continuously for 15 minutes over any convenient window prior to the inflation of the surgical tourniquet. This will be the only change in their clinical care. Their anesthesia will be conducted as per routine and as the anesthesia team sees fit with a target FiO2 of 0.25, the only exception being that they will receive 75/25 heliox prior to the inflation of the tourniquet.

Intervention Type PROCEDURE

Muscle Biopsy

During the course of the operation a small muscle biopsy will be collected.

Intervention Type PROCEDURE

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Scheduled for an elective total knee arthroplasty
* \> 18 years of age
* Expected to require inhaled oxygen concentrations \< 25%
* Able to provide informed consent

Exclusion Criteria

* Expected to require inhaled oxygen concentrations \> 25%
* \< 18 years of age
* Member of a defined vulnerable population (e.g. pregnant, mentally handicapped, prisoners, etc.).
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

University of Florida

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Responsibility Role SPONSOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Cameron R. Smith, M.D., Ph.D.

Role: PRINCIPAL_INVESTIGATOR

University of Florida

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

UF Health

Gainesville, Florida, United States

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

201400033

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.