Crome/Cobalt Respiration Study

July 20, 2026 updated by: Medtronic Cardiac Rhythm and Heart Failure
The goal of this study is to compare measured respiration rates in various subject scenarios and use conditions between capnography and the Crome and Cobalt ICD and CRT-D MRI SureScan devices (derived using a Holter recorder).

Study Overview

Status

Status

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

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

This study will enroll subjects who have already received a Medtronic Crome or Cobalt ICD or CRT-D MRI SureScan device and who meet all of the inclusion criteria and none of the exclusion criteria. Subjects will be asked to complete various breathing/exercise activities while connected to a capnography monitor and a Holter recorder and respiration rates from both devices will be compared for accuracy, with the capnography monitor being the source of truth.

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.
Observational

Enrollment (Actual)

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.
61

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.

Study Locations

  • United States
    • Connecticut
      • Hartford, Connecticut, United States, 06102
        • Hartford Hospital
    • Minnesota
      • Saint Cloud, Minnesota, United States, 56303-1900
        • CentraCare Heart & Vascular Center
    • Oklahoma
      • Oklahoma City, Oklahoma, United States, 73135
        • South Oklahoma Heart Research
    • Texas
      • Austin, Texas, United States, 78705-1852
        • Texas Cardiac Arrhythmia Research Foundation

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

The target population for this study will include adult subjects who are ≥18 years of age, who have an active, implanted Crome or Cobalt ICD or CRT-D system that's been implanted for at least 30 days and which has not yet reached the Recommended Replacement Time (RRT), and who do not have any contraindications that would impact their ability to complete the required breathing and exercise activities, which aligns with the key eligibility criteria for the study. A minimum of 30% of all enrolled subjects will have a documented history of heart failure and a minimum of 20% of all enrolled subjects will be female (as identified at birth).

Description

Inclusion Criteria:

  1. Subject has an active CromeTM or CobaltTM ICD or CRT-D MRI SureScanTM system which has been implanted for at least 30 days and which has not yet reached the Recommended Replacement Time (RRT)

  2. Subject is implanted with one of the following models of a true bipolar right ventricular lead manufactured by Medtronic:

    • Model 6946M
    • Model 6947
    • Model 6947M
    • Model 6935
    • Model 6935M
  3. Subject is ≥ 18 years of age
  4. Subject (or subject's legally authorized representative) is willing and able to provide written informed consent
  5. Subject is willing and able to comply with study procedures

Exclusion Criteria:

  1. Subject has existing condition that necessitates the use of supplemental oxygen
  2. Subject has active acute respiratory infection or respiratory disorder that may affect ability to perform breathing or exercise activities, as assessed by the investigator
  3. Any concomitant condition that might endanger the subject through participation in the study or interfere with study procedures, as assessed by the investigator
  4. Subject has an active or suspected lead integrity issue, in the opinion of the investigator
  5. Subject is enrolled in another study that could confound the results of this study
  6. Subject has NYHA Class IV heart failure

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

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
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.
All Enrolled Subjects
In-clinic Testing Visit: All enrolled subjects will have a Holter recorder, capnography monitor and SpO2 sensor applied and will undergo various breathing/exercise activities. Subjects will go home connected to the Holter recorder for 24 hours for collection of ambulatory data.
Device: Enabling Sensor Research Holter Mode feature
The Sensor Research Holter Mode feature within the Crome and Cobalt ICD and CRT-D devices will be enabled for a short period of time at the In-clinic Testing Visit to allow for desired data collection.

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
Daily Capnography Respiration Rate
Time Frame: During In-clinic Testing Visit, an average of 2 hours
Daily respiration rates will be calculated using a series of paired device-derived respiration rates and capnography waveform-derived respiration rates, where the capnography respiration rate will be the source of truth. The differences in these daily respiration rates will be evaluated to determine whether the daily device-derived respiration rate accuracy is acceptable (i.e., consistently within +/- 3 breaths per minute of the true respiration rate).
During In-clinic Testing Visit, an average of 2 hours
Daily Device-derived Respiration Rate
Time Frame: During In-clinic Testing Visit, an average of 2 hours
Daily respiration rate determined by the Crome and Cobalt ICD and CRT-D devices.
During In-clinic Testing Visit, an average of 2 hours
Difference in Respiration Rate
Time Frame: During In-clinic Testing Visit, an average of 2 hours
Difference between the daily respiration rate determined using capnography and the daily respiration rate determined by the Crome and Cobalt ICD and CRT-D devices.
During In-clinic Testing Visit, an average of 2 hours

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.
Medtronic Cardiac Rhythm and Heart Failure

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 (Actual)

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.
November 21, 2023

Primary Completion (Actual)

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.
June 12, 2024

Study Completion (Actual)

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 12, 2024

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).
October 9, 2023

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.
October 13, 2023

First Posted (Actual)

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.
October 18, 2023

Study Record Updates

Last Update Posted (Actual)

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.
July 21, 2026

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.
July 20, 2026

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.
August 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

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.
  • MDT22030

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

No

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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