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Cardiac resynchronization therapy with pacemaker alone, or in combination with a cardioverter-defibrillator, prolongs life and decreases risk of heart failure exacerbation in patients with low ejection fraction and wide QRS. Some patients achieve decrease in QRS duration 6 months after cardiac resynchronization therapy. Such phenomenon is called reverse electrical remodeling of native conduction. Retrospective analysis showed that reverse electrical remodeling of the native conduction after at least 6 months of CRT is associated with decreased rate of ventricular arrhythmias and better survival. This study is designed to study reverse electrical remodeling prospectively.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| CRT | Patients with implanted cardiac resynchronization therapy defibrillator |
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| Measure | Description | Time Frame |
|---|---|---|
| correlation between electrical and mechanical remodeling | correlation between electrical and mechanical measures of dyssynchrony | 6 months after CRT implantation |
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Inclusion Criteria:
Exclusion Criteria:
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Heart Failure Patients undergoing implantation of cardiac resynchronization therapy defibrillator
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| Name | Affiliation | Role |
|---|---|---|
| Larisa Tereshchenko, MD, PhD | Johns Hopkins University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Johns Hopkins Hospital | Baltimore | Maryland | 21287 | United States |
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| ID | Term |
|---|---|
| D006333 | Heart Failure |
| ID | Term |
|---|---|
| D006331 | Heart Diseases |
| D002318 | Cardiovascular Diseases |
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