Wearable ECG Template Mapping for Reliable Arrhythmia Focus Diagnosis
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Solution Overview
Problem
Current arrhythmia diagnosis methods are complicated and unpredictable, often failing to replicate arrhythmia detected outside the electrophysiology lab, leading to potential medical dangers and frustration due to the inability to accurately diagnose the arrhythmia focus.
Innovation Solution
A system and method that utilizes a specially adapted wearable monitor to capture ECG waveforms, which are analyzed to define an arrhythmia template, and then imported into a pace mapping system for comparison with ECG waveforms recorded in the lab, ensuring consistent electrode placement and filter settings for accurate diagnosis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If arrhythmia is diagnosed using traditional EP lab pace mapping methods, then the diagnostic process can identify arrhythmia focus, but the procedure is complicated and unpredictable with up to 20% failure rate when arrhythmia does not occur spontaneously in the lab
Solution Approach 1:
The patent applies preliminary action by performing wearable ECG monitoring and arrhythmia detection outside the EP lab before the invasive pace mapping procedure. The arrhythmia template is captured and stored in advance using a wearable monitor during the patient's normal activities, ensuring the arrhythmia is actually present and characterized before the complex lab procedure begins. This preliminary capture of the arrhythmia waveform eliminates the uncertainty of whether the arrhythmia will occur during the EP lab procedure.
Solution Approach 2:
The patent uses copying by creating a digital template copy of the arrhythmia waveform captured during wearable monitoring. This template is then imported into the EP lab system and used for comparison with paced waveforms during pace mapping. Instead of relying on spontaneous occurrence or drug-induced arrhythmia in the lab, the system copies the actual arrhythmia characteristics from the wearable monitor and uses this copy as the reference template for diagnosis.
2Measurement precision
If arrhythmia is captured during wearable monitoring outside the lab, then the actual arrhythmia pattern is obtained, but the waveform cannot be directly used in the EP lab pace mapping system due to format incompatibility
Solution Approach 1:
The patent applies parameter changes by converting the arrhythmia waveform from the wearable monitor's native format to a format compatible with the EP lab pace mapping system. The system changes the temporal, spatial, and numerical parameters of the waveform data through import functions and calibration processes, adjusting sampling rates, lead configurations, and time synchronization to match the EP lab system's requirements while preserving the essential arrhythmia characteristics.
3Ease of operation
If the arrhythmia template is captured using wearable monitor with different filters and settings than the EP lab recorder, then the monitoring can be performed in daily activities, but the waveforms are not directly comparable for accurate pace mapping
Solution Approach 1:
The patent applies preliminary action by performing filter calibration and waveform synchronization before the EP lab procedure. The system captures the arrhythmia template during wearable monitoring with the patient's natural filter settings, then preliminarily processes and calibrates this template to account for differences in filtering characteristics between the wearable monitor and EP lab recorder. This preliminary calibration ensures accurate comparison during pace mapping despite different operational conditions.
Data Source
AI summary
A system including a wearable ECG monitor configured to record a wearable ECG waveform an analyzer configured to run on a computer and to derive an arrhythmia template waveform or a composite arrhythmia waveform from the wearable ECG waveform and to provide the arrhythmia template waveform or the composite arrhythmia waveform to a pace mapping system, an EP lab ECG configured to provide a paced ECG waveform, and the pace mapping system configured to compare the paced ECG waveform with the provided arrhythmia template waveform or composite arrhythmia waveform to determine an arrhythmia focus