Related Experiment Video
Updated: Aug 7, 2026
12:09
Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
Published on: January 8, 2013
A spatial scale factor for electrophysiological models of myocardium
1University of Arizona, Tucson 85721, USA. art@cochise.biosci.arizona.edu
Progress in Biophysics and Molecular Biology
|October 24, 1998
Summary
Sudden cardiac death, often without warning, involves the heart entering fibrillation. This study narrows the estimated range for
Area of Science:
- Biophysics
- Cardiology
- Computational Biology
Background:
- Sudden cardiac death (SCD) accounts for a significant portion of male deaths (20-64 years) in the US.
- A quarter of SCD cases lack forewarning or visible autopsy cause, often due to cardiac fibrillation.
- Cardiac fibrillation is characterized as electrical turbulence, distinct from normal heart rhythm.
Purpose of the Study:
- To refine the estimated range for the biophysical parameter 'D', crucial for understanding cardiac fibrillation.
- To provide a more accurate basis for studying the spatio-temporal dynamics of fibrillation and defibrillation.
Main Methods:
- Analysis of diverse recent experimental data.
- Biophysical modeling focusing on the role of the spatial parameter 'D'.
Main Results:
- Experimental evidence supports a narrower range of realistic values for the biophysical parameter 'D'.
- The parameter 'D' significantly influences the spatial pattern and evolution of cardiac fibrillation.
Conclusions:
- A refined understanding of 'D' is essential for comprehending cardiac fibrillation mechanisms.
- Accurate 'D' values are critical for developing effective defibrillation strategies and preventing sudden cardiac death.
