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A program to measure time intervals between R wave peaks in real-time mode
Computer Methods and Programs in Biomedicine
|August 1, 1985
Summary
This study introduces an assembly language program for rapid R wave peak detection in electrocardiograms (ECGs). The program analyzes R-R intervals 31 times faster than recording speed, enabling real-time ECG analysis.
Area of Science:
- Biomedical Engineering
- Computer Science
- Cardiology
Background:
- Electrocardiograms (ECGs) require precise R wave peak identification for accurate heart rate variability analysis.
- The 5 ms interval between analog-to-digital conversions in ECGs necessitates rapid processing.
- Existing methods may not offer sufficient speed for real-time analysis of recorded ECG data.
Purpose of the Study:
- To develop a high-speed program for recognizing R wave peaks in ECGs.
- To accurately measure R-R time intervals within critical processing windows.
- To facilitate real-time analysis of ECG data and display interval histograms.
Main Methods:
- A program was developed in assembly language for the PDP-12 computer.
- The program identifies R wave peaks and calculates R-R intervals.
- Execution time for the entire sequence was optimized to approximately 160 microseconds.
Main Results:
- The developed program achieves an analysis speed 31 times faster than the ECG recording speed.
- R wave peaks and R-R intervals are accurately measured within the critical 5 ms conversion period.
- Subsequent programs for displaying R-R interval and joint interval histograms were presented.
Conclusions:
- The assembly language program significantly enhances the speed of ECG R wave and R-R interval analysis.
- This rapid analysis capability is crucial for real-time processing of ECG data.
- The presented routines support advanced analysis through histogram visualization.