Heart Failure Clinical Trial
Official title:
InSync Implantable Cardioverter Defibrillator Registry: Cardiac Resynchronization Therapy
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).
n/a
Observational Model: Defined Population, Time Perspective: Longitudinal
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