2D Cardiac Conduction Wavefront Map: Understanding Heart Rhythms

What the 2D Cardiac Conduction Wavefront Map Is

The 2D Cardiac Conduction Wavefront Map is a sophisticated simulation that models how electrical signals travel through the heart's tissues. This model uses a cellular-automaton approach, where each cell in the heart tissue can either be at rest or excited by an electrical impulse.

At the core of this simulation is the SA (sinoatrial) node, which acts as the heart’s natural pacemaker. The SA node initiates an electrical wavefront that spreads through the atria and then to the AV (atrioventricular) node, His bundle, and Purkinje fibers, ultimately reaching the ventricles.

How It Works

The propagation of these electrical signals is governed by the Dijkstra fast-marching algorithm. This algorithm efficiently calculates the exact time at which each cell becomes activated as the wavefront moves through the tissue, providing a dynamic and realistic representation of cardiac conduction.

The simulation allows for real-time adjustments to key parameters such as the SA node firing rate (which controls heart rate), AV nodal delay (the time it takes for an electrical impulse to pass from the atria to the ventricles), and His-Purkinje conduction speed. These parameters can be altered using sliders, enabling users to observe how changes in these factors affect cardiac rhythm.

Why It Matters

Understanding the 2D Cardiac Conduction Wavefront Map is essential for diagnosing and treating various heart conditions. For instance, bundle-branch blocks can cause abnormal heart rhythms by disrupting the normal conduction pathway of electrical signals through the ventricles.

By simulating these conditions, healthcare professionals can better understand how different factors influence cardiac function and develop more effective treatment strategies.

Real-World Applications

The insights gained from this simulation are applied in clinical settings to diagnose arrhythmias such as atrial fibrillation, where the irregular conduction of electrical signals can lead to inefficient heart function.

Additionally, it aids in understanding and treating conditions like bundle-branch blocks, which can cause symptoms ranging from palpitations to more severe issues like congestive heart failure.

Frequently asked questions

Try it live

Everything above runs in your browser — open 2D Cardiac Conduction Wavefront Map and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.