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A 'LEAP' in controlling cardiac fibrillation
Date:7/14/2011

This release is available in German.

An international team of scientists from the Max Planck Institute for Dynamics and Self-Organization (Gttingen, Germany), Cornell University (Ithaca, New York) the Ecole Normale Suprieure de Lyon (France), the University Medicine Gttingen (Germany), the Rochester Institute of Technology (USA), and the Institut Non-Linaire de Nice (France) have developed a new low-energy method for terminating life-threatening cardiac fibrillation of the heart. They have shown that their new technique called LEAP (Low-Energy Anti-fibrillation Pacing) reduces the energy required for defibrillation by more than 80% as compared to the current conventional method. Their discovery opens the path for the painless therapy of life threatening cardiac fibrillation. The scientists describe their results in the current issue of Nature.

In a healthy heart, electrical pulses that propagate across the heart muscle in an orderly fashion control the organ's movements: at regular intervals the heart's ventricles and atria contract and relax again. In the case of cardiac arrhythmia, however, this does not work reliably. Here, electrical pulses may propagate throughout the heart chaotically, disabling the regular heartbeat and thus preventing the body from being properly supplied with blood. The most common cardiac arrhythmia is atrial fibrillation, which affects more than 10 million people in Europe and US.

For patients suffering from chronic atrial fibrillation there is one reliable solution: a defibrillation. A strong electric pulse, which patients perceive as painful and which can damage the surrounding tissue forces the heart back into its regular beating. The international team of scientists led by Stefan Luther from the Max Planck Institute and Flavio Fenton from Cornell University has proposed a new method. Using a cardiac
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Contact: Dr. Birgit Krummheuer
birgit.krummheuer@ds.mpg.de
49-551-517-6668
Max-Planck-Gesellschaft
Source:Eurekalert  

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