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[Multi-channel data collection and visualization system for intramyocardial electrograms].
P Kastner1, W Wimmer, H Hutten
1Cortronik Mess- und Therapiegeräte GmbH, Plüddemanngasse 67a, 8010 Graz, Austria.
Biomedizinische Technik. Biomedical Engineering
|January 13, 2001
Summary
This project developed a multichannel system for recording intramyocardial electrograms (IEGM) from paced and beating hearts. The system aids in visualizing excitation spread and measuring cardiac electrophysiology in animal models.
Area of Science:
- Biomedical Engineering
- Cardiovascular Physiology
- Electrophysiology
Context:
- Accurate recording of intramyocardial electrograms (IEGM) is crucial for understanding cardiac electrophysiology.
- Existing systems may lack integrated pacing capabilities or user-friendly visualization tools.
- Animal models are essential for studying cardiac excitation spread and drug effects.
Purpose:
- To develop a multichannel data acquisition system for recording and visualizing intramyocardial electrograms (IEGM).
- To integrate a programmable dual-chamber pacemaker for controlled cardiac stimulation.
- To create a LabView-based graphical user interface for system control and data analysis.
Summary:
- The developed system features multi-step signal processing including amplification, filtering (0.05-800 Hz), and AD conversion (12 Bit, 6.25 kHz).
- IEGMs can be recorded in unipolar or bipolar modes, with integrated pacing capabilities.
- A microcontroller-driven LabView interface facilitates parameter programming, data acquisition, and real-time visualization.
Impact:
- Enables precise monitoring of cardiac excitation spread and propagation velocity in animal experiments.
- Facilitates the measurement of drug impacts and pathological changes on IEGM morphology.
- Provides a versatile tool for cardiovascular research and preclinical studies.