HELIox CardiOPlegia Trial During Cardiac surgERy (HELICOPTER-1)

May 2, 2016 updated by: Unity Health Toronto
The HELICOPTER-1 Trial is a single centre pilot study to determine the feasibility of administering Heliox in cardioplegia during cardiac surgery and whether it has the potential to reduce the incidence and severity of myocardial ischemia during and after cardiac surgery.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The HELICOPTER-1 Trial is a single centre, randomized trial evaluating the feasibility of administration of Heliox for prevention of myocardial ischemia in patients undergoing cardiac surgery. Half of the study population will be randomly assigned to the receive cardioplegia enriched with a 70:30 (Helium:Oxygen) Heliox mixture, while the other half will be randomized to receive the current clinical standard of care (nitrogen and oxygen in cardioplegia).

Subjects will be followed up daily during their post-operative course in hospital for clinical outcomes. A 30-day phone follow-up will be conducted for vital status and MI.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
24

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.
  • Name: David Mazer, MD
  • Phone Number: 416-864-5825
  • Email: mazerd@smh.ca

Study Contact Backup

  • Name: Constantine Dalamagas, RRT, CPC
  • Phone Number: 5753 416-864-6060
  • Email: DalamagasC@smh.ca

Study Locations

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5B1W8
        • Recruiting
        • St. Michael's Hospital
        • Contact:
          • Constantine Dalamagas, RRT, CPC
          • Phone Number: 5753 416-864-6060
          • Email: DalamagasC@smh.ca

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Age 18 or older
  • Cardiac surgery with CPB where use of a coronary sinus catheter is indicated

Exclusion Criteria:

  • Patient refusal
  • Recent myocardial infarction (less than 7 days old)
  • Left ventricular ejection fraction less than 30%
  • Known pregnancy on date of surgery

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Heliox
Cardioplegia enriched with a 70:30 (Helium:Oxygen) Heliox mixture while the patient is on cardiopulmonary bypass
Other: Heliox
Half of the study population will be randomly assigned to receive cardioplegia enriched with a 70:30 (Helium:Oxygen) via a D100 pediatric oxygenator. The Heliox itself will need to be administered via an oxygen regulator using a low flowmeter.
Active Comparator: Standard of care
Cardioplegia enriched with a Nitrogen and Oxygen mixture while the patient is on cardiopulmonary bypass
Other: Standard of care
The other half will be randomized to Nitrogen:Oxygen mixture. This will be done through the standard of care cardioplegia apparatus. There will be no novel interventions administered in this group.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Feasibility of using Heliox to oxygenate the blood cardioplegia
Time Frame: 30 days from the intervention
To determine the feasibility of using Heliox to oxygenate the blood cardioplegia. Feasibility will be measured according to subject enrollment rates and to measurement of the blood gas content of the cardioplegia solutions.
30 days from the intervention

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
New Myocardial Infarction
Time Frame: 30 days from the intervention

Myocardial infarction (MI) will be defined according to the Third Universal Definition of MI using the following two criteria:

  1. Serum levels of Troponin I: Values more than 10 times the 99th percentile of the upper limit from a normal baseline. If preoperative enzyme levels are abnormal, the post-operative enzymes must be greater than the baseline plus 10 times the upper limit from a normal baseline.
  2. ECG: At least one of the following i) New left bundle branch block ii) Development of new pathological Q waves iii) Imaging evidence of new loss of viable myocardium or new regional wall abnormality
30 days from the intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Unity Health Toronto

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: David Mazer, MD, Unity Health Toronto

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 2016

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2016

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2017

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 18, 2016

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 18, 2016

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 20, 2016

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 3, 2016

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 2, 2016

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2016

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 15 - 311

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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