Can chaos theory help predict heart attacks?

Jul 21, 2010

Chaos models may someday help model cardiac arrhythmias -- abnormal electrical rhythms of the heart, say researchers in the journal CHAOS, which is published by the American Institute of Physics.

In recent years, medical research has drawn more attention to chaos in cardiac dynamics. Although chaos marks the disorder of a dynamical system, locating the origin of chaos and watching it develop might allow researchers to predict, and maybe even counteract, certain outcomes.

An important example is the chaotic behavior of , a severely that is often life-threatening. One study found chaos in two and three dimensions in the breakup of spiral and scroll waves, thought to be precursors of cardiac fibrillation. Another study found that one type of heartbeat irregularity, a sudden response of the heart to rapid beating called "spatially discordant alternans," leads to chaotic behavior and thus is a possible predictor of a fatal .

Mathematicians Shu Dai at Ohio State University and David Schaeffer at Duke University have built on this work to find another chaotic solution to an equation for alternans along a one-dimensional fiber of with stimuli applied at one end. Assigning extreme parameter values to the model, the team was able to find chaotic behavior in space over time. The resulting chaos may have a unique origin, which has not yet been identified.

Explore further: A new multi-bit 'spin' for MRAM storage

More information: The article, "Chaos for cardiac arrhythmias through a one-dimensional modulation equation for alternans" by Shu Dai and David G. Schaeffer was published online in the journal CHAOS on June 30, 2010. See: link.aip.org/link/CHAOEH/v20/i2/p023131/s1

Provided by American Institute of Physics

4.5 /5 (2 votes)
add to favorites email to friend print save as pdf

Related Stories

Meaning from chaos

Nov 21, 2005

Transmitting light-based signals by embedding them in chaos doesn't sound like a particularly good idea. But in last week's issue of Nature, Claudio Mirasso and co-workers show otherwise. They have demonstrated that it is ...

Chaotic laser brings out higher precision OTDR

Jun 03, 2010

Professor Wang Yun Cai and his student Wang An Bang reported a new concept of optical time domain reflectometry (OTDR) based on a chaotic light correlation method. This will be useful for precise fault location in fiber links ...

An angry heart can lead to sudden death, researchers find

Feb 24, 2009

Before flying off the handle the next time someone cuts you off in traffic, consider the latest research from Yale School of Medicine researchers that links changes brought on by anger or other strong emotions to future arrhythmias ...

Anger management: The key to staying heart healthy?

Feb 23, 2009

New research published in the March 3, 2009, issue of the Journal of the American College of Cardiology finds that anger-induced electrical changes in the heart can predict future arrhythmias in patients with implantable cardio ...

Recommended for you

A new multi-bit 'spin' for MRAM storage

19 hours ago

Interest in magnetic random access memory (MRAM) is escalating, thanks to demand for fast, low-cost, nonvolatile, low-consumption, secure memory devices. MRAM, which relies on manipulating the magnetization ...

New study refines biological evolution model

Jul 21, 2014

Models for the evolution of life are now being developed to try and clarify the long term dynamics of an evolving system of species. Specifically, a recent model proposed by Petri Kärenlampi from the University ...

User comments : 0