Intermittent ECG Event Detection for Precise PVC Source Localization
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Solution Overview
Problem
Existing methods for identifying the origin of premature ventricular contractions (PVCs) are inefficient, particularly in terms of time and accuracy, which hampers effective catheter ablation procedures for treating frequent PVCs.
Innovation Solution
A system and method utilizing a 12-lead electrocardiograph apparatus to record and analyze electrocardiography signals for an intermediate duration, identifying instances of PVCs, and locating their sources through waveform analysis and software algorithms, providing a 12-lead visualization for precise ablation guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional electrical mapping methods are used to locate PVC sources, then the origin can be identified, but the procedure takes a long time due to extensive manual mapping requirements
Solution Approach 1:
The system performs preliminary automated analysis of 12-lead ECG waveforms to predict PVC origins before the ablation procedure begins. By pre-identifying likely PVC sources using waveform morphology analysis and electrocardiographic criteria, the system prepares targeted locations in advance, eliminating the need for extensive real-time electrical mapping during the procedure.
Solution Approach 2:
The invention replaces manual electrical mapping procedures with an automated computer-based system that analyzes 12-lead ECG waveforms using software algorithms. This substitution of mechanical/manual mapping with automated digital analysis dramatically reduces procedure time while maintaining or improving localization accuracy.
2Measurement precision
If 12-lead electrocardiography is used for PVC detection, then the origin can be located with reasonable accuracy, but intermittent events may be missed without continuous monitoring
Solution Approach 1:
The system continuously monitors 12-lead ECG waveforms throughout the procedure, automatically detecting and analyzing each PVC event as it occurs. This continuous automated detection ensures that no intermittent PVC events are missed, while the 12-lead waveform analysis maintains high accuracy in origin identification.
Solution Approach 2:
The system provides real-time feedback by automatically detecting PVC events, analyzing their waveform characteristics, and updating the origin prediction based on accumulated data. This feedback mechanism improves both the reliability of detecting intermittent events and the precision of origin localization as more events are observed.
3Measurement precision
If additional posterior ECG leads are added to improve PVC origin localization, then accuracy improves, but device complexity and procedure difficulty increase
Solution Approach 1:
The system creates a virtual representation of the heart's electrical activity by analyzing standard 12-lead ECG waveforms through computational algorithms. Instead of requiring physical posterior leads, the software generates predictive models of PVC origins based on patterns recognized in the available 12-lead data, effectively copying the diagnostic capability without the physical complexity.
Solution Approach 2:
The invention changes the analytical parameters by applying sophisticated waveform analysis techniques to standard 12-lead ECG data. Rather than adding more physical leads, the system extracts additional diagnostic information through computational methods, changing how the existing data is processed and interpreted to achieve enhanced localization precision.
Data Source
AI summary
A controller includes a memory that stores instructions; and a processor that executes the instructions. When executed by the processor, the instructions cause the controller to: obtain an electrocardiography signal; identify a plurality of instances of intermittent events from the electrocardiography signal based on waveforms in the electrocardiography signal, and locate a source of the plurality of instances of the intermittent events.