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defibrillation
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defibrillation

Use of electrical stimulation to restore a chaotic heartbeat to a rhythmical pattern. In fibrillation, which may occur in most kinds of heart disease, the heart muscle contracts irregularly; the heart is no longer working as an efficient pump. Paddles are applied to the chest wall, and one or more electric shocks are delivered to normalize the beat.

In patients suffering with arrhythmia, implantable defibrillators are inserted into the chest with leads threading through veins into the right side of the heart. The first was implanted in 1980 and by 1999 around 400,000 had been implanted worldwide.
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Since T-wave alternans often precedes sudden cardiac arrest, researchers have suggested that it could be used to decide which patients need implanted defibrillators (SN: 9/23/06, p.
Test identifies people at cardiac risk by Science News
Tokyo, Japan, Dec 2, 2005 - (JCN) - Nihon Kohden announced on December 1 that it has launched the TEC-7700 and the TEC-2300 series of biphasic defibrillators.
Nihon Kohden Introduces Two New Biphasic Defibrillator Series by JCNN News Summaries
wants to take the top spot among makers of external heart attack fighting defibrillators within the next year or two.
Company takes its market to heart by Reed, Vita / Los Angeles Business Journal
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