Real-time feedback of dynamic cardiac repolarization properties.
David Western1, Peter Taggart, Ben Hanson
1Department of Mechanical Engineering, University College London, WC1E 7JE United Kingdom.
Summary
This study introduces an expert system for analyzing cardiac electrogram signals to detect activation and repolarization times. The system enhances arrhythmia research and diagnostics by providing real-time feedback on dynamic repolarization models.
Area of Science:
- Cardiology
- Biomedical Engineering
- Computational Biology
Background:
- Arrhythmia poses a significant health challenge, driving extensive research and computational modeling efforts.
- Current research is hampered by limited human data availability and challenges in clinical translation.
- Cardiac electrogram signal analysis is crucial for understanding and managing arrhythmias.
Purpose of the Study:
- To develop an automated expert system for analyzing cardiac electrogram signals.
- To accurately detect local activation and repolarization times.
- To enhance arrhythmia research and clinical diagnostic capabilities.
Main Methods:
- Implementation of an expert system utilizing heuristic algorithms.
- Automatic rejection of unreliable measurements to ensure data integrity.
- Real-time processing of cardiac electrogram signals for immediate feedback.
Main Results:
- The system successfully detects local activation and repolarization times from electrogram signals.
- Automated rejection of unreliable data enhances the accuracy of measurements.
- Real-time feedback on dynamic repolarization models is provided to cardiologists.
Conclusions:
- The developed expert system offers a robust solution for cardiac electrogram analysis.
- This technology has the potential to significantly advance arrhythmia research.
- Novel diagnostic techniques and therapies for arrhythmias may emerge from this work.
Related Concept Videos
Correlation between ECG and Cardiac Cycle
11.6K
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
11.6K
Cardiac Action Potential
5.6K
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
5.6K
Electrophysiology of Normal Cardiac Rhythm
8.7K
The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
8.7K
Electrocardiogram
5.3K
An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
5.3K
Electrocardiogram Fundamentals
1.4K
Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
1.4K
Pulse rhythm
1.3K
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
1.3K


