Word: arrhythmia
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Dates: during 1990-1999
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...problem in question is cardiac arrhythmia, an irregular beating of the heart that can be deadly. Some cardiac arrhythmias bear the telltale signs of chaos. By delivering a series of precisely timed electrical pulses, four scientists at UCLA, the College of Wooster in Ohio and the Naval Surface Warfare Center in Maryland theorized that they might be able to tame unruly hearts...
Each year about 400,000 people in the U.S. die of sudden cardiac death. Kirby said most of these deaths are suspected of being caused by ventricular fibrillation, the most fatal form of irregular heart rhythm, or arrhythmia...
According to Kirby--who heads the cardiovascular laboratory at the SPH--arrhythmia sometimes results from stress. How the abnormal response of the heart is started is not understood by researchers yet, she said...
After Gathers' first collapse, he underwent a series of tests that revealed a cardiac arrhythmia -- an irregular heartbeat that can indicate anything from normal palpitations to a life-threatening condition. Gathers was ordered to report for weekly testing and treated with Inderal, one of a class of drugs called beta blockers. These inhibit the effects of adrenaline and smooth out the rhythms of the heart. Side effects include fatigue and sluggishness...