COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH: Menu

InSync Implantable Cardioverter Defibrillator Registry: Cardiac Resynchronization Therapy

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00289302
Recruitment Status : Completed
First Posted : February 9, 2006
Last Update Posted : October 5, 2007
Information provided by:
Medtronic Cardiac Rhythm and Heart Failure

Brief Summary:

Heart failure is a progressive disease that decreases the pumping action of the heart. This may cause a backup of fluid in the heart and may result in heart beat changes. When there are changes in the heart beat sometimes an implantable heart device is used to control the rate and rhythm of the heart beat. In certain heart failure cases, when the two lower chambers of the heart no longer beat in a coordinated manner, cardiac resynchronization therapy (CRT) may be prescribed. CRT is similar to a pacemaker. It is placed (implanted) under the skin of the upper chest. CRT is delivered as tiny electrical pulses to the right and left ventricles through three or four leads (soft insulated wires) that are inserted through the veins to the heart.

People who have a dangerously fast heart beat, or whose heart is at risk of stopping beating, may be in need of an electronic device called an implantable cardioverter defibrillator (ICD). An ICD is implanted surgically just under the skin in the upper chest area and it sends a strong electrical impulse, or shock, to the heart to return it to a normal rhythm. If the heart is beating too slowly or at an abnormal rhythm, an ICD can also pace the heart to return the heart to its normal rhythm. The InSync ICD device can change the timing of when the left and right ventricles of the heart are paced to beat.

The purpose of this study is to monitor the long-term performance of the InSync ICD Model 7272 and the InSync Marquis 7277 systems for cardiac resynchronization therapy (CRT).

Condition or disease Intervention/treatment
Heart Failure Cardiomyopathy Device: Cardiac resynchronization therapy device

Layout table for study information
Study Type : Observational
Enrollment : 600 participants
Observational Model: Defined Population
Time Perspective: Prospective
Official Title: InSync Implantable Cardioverter Defibrillator Registry: Cardiac Resynchronization Therapy
Study Start Date : January 2003
Actual Study Completion Date : December 2006

Resource links provided by the National Library of Medicine

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients implanted with the InSync ICD or InSync Marquis cardiac resynchronization therapy (CRT) system (includes InSync ICD Model 7272 or InSync Marquis Model 7277, right atrial lead, right ventricular lead and any market released Medtronic left ventricular lead or the investigational Attain Model 4189 lead which was implanted during the MIRACLE ICD Study)

Exclusion Criteria:

  • Patients with a history of a previously failed placement of a currently investigational Medtronic left ventricular lead within 30 days of enrollment in the InSync ICD Registry

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00289302

Show Show 51 study locations
Sponsors and Collaborators
Medtronic Cardiac Rhythm and Heart Failure
Layout table for investigator information
Study Chair: InSync ICD Registry Study Leader Medtronic
Layout table for additonal information Identifier: NCT00289302    
Other Study ID Numbers: 196
First Posted: February 9, 2006    Key Record Dates
Last Update Posted: October 5, 2007
Last Verified: September 2006
Keywords provided by Medtronic Cardiac Rhythm and Heart Failure:
Heart Failure
Cardiac pacing
Cardiac resynchronization therapy
Implantable Cardioverter Defibrillator
Additional relevant MeSH terms:
Layout table for MeSH terms
Heart Failure
Heart Diseases
Cardiovascular Diseases