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- <text id=92TT1983>
- <title>
- Sep. 07, 1992: Can Chaos Save Lives?
- </title>
- <history>
- TIME--The Weekly Newsmagazine--1992
- Sep. 07, 1992 The Agony of Africa
- </history>
- <article>
- <source>Time Magazine</source>
- <hdr>
- THE WEEK, Page 22
- HEALTH & SCIENCE
- Can Chaos Save Lives?
- </hdr><body>
- <p>An abstract theory could have some very practical consequences
- </p>
- <p> According to the emerging science of chaos theory, many
- natural systems that appear utterly random--tumbling
- waterfalls, roiling weather patterns, clusters of earthquakes--are really governed by underlying mathematical patterns. Now an
- experiment reported in Science has shown that understanding chaos
- could one day save lives.
- </p>
- <p> The 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.
- </p>
- <p> It works in the test tube. The four got a piece of
- rabbit-heart tissue to beat chaotically and monitored the chaos
- with a computer. The computer, programmed with an understanding
- of chaotic math, then delivered anti-chaotic pulses. And the
- heart tissue's beats became nearly regular. Whether the drug
- would work the same way in living humans is another question,
- but the researchers predict that "smart pacemakers" might one
- day correct cardiac problems that are now largely intractable.
- </p>
-
- </body></article>
- </text>
-
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