Key Points
- To develop and evaluate a microcomputer-based heart-torso model with realistic geometry for simulating epicardial electrical potential distributions.
- Constructed a heart model comprising approximately 65,000 cell units arranged in a cubic close-packed structure with variable action potential durations.
- Mounted the heart and epicardial models into an inhomogeneous human torso model and calculated electric dipoles from the spatial gradient of the action potential.
- Computed epicardial potential distributions using the boundary element method during normal activation and simulated preexcited activation mimicking Wolff-Parkinson-White syndrome.
- Simulated epicardial potential maps during normal cardiac activation demonstrated close agreement with literature-reported patterns.
- Modeled preexcited heartbeats accurately reproduced the characteristic epicardial potential distributions observed in Wolff-Parkinson-White syndrome.
Structured PICO
PPopulationMicrocomputer-based heart-torso model with realistic geometry composed of approximately 65,000 cell units
IInterventionSimulation of epicardial potentials during a normal heart beat and a preexcited beat mimicking Wolff-Parkinson-White (WPW) syndrome
OOutcomeSimulated epicardial potential maps
A microcomputer-based heart-torso model successfully simulated epicardial potentials during normal and WPW syndrome beats, providing a tool for electrocardiographic inverse problems studies.