Computer Methods and Programs in Biomedicine
Volume 61, Issue 3, March 2000, Pages 221-231

Windows software for cardiac electrophysiology studies and ablation monitoring

Henri Vänttinena), Juha Nousiainena), Pekka Mäkynenb) and Jaakko Malmivuoa)
a) Ragnar Granit Institute, Tampere University of Technology, Tampere, Finland
b) Department of Cardiology, Tampere University Hospital, Tampere, Finland

Received 6 November 1997;
revised 6 June 1999;
accepted 23 June 1999.
Available online 21 January 2000.

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A system for cardiac electrophysiology (EP) studies consisting of a Windows software package, a standard 120 MHz Pentium PC with a high-performance video card and a data acquisition card has been developed during this study. The system is capable of real time data acquisition and storage of 24 channels with simultaneous display of 1–16 arbitrarily chosen channels at a sampling rate of 500 Hz. It can be used clinically in electrophysiology studies and during catheter radio-frequency ablation treatment for monitoring the ablation and its effects. The built-in ablation monitoring capability enables combined EP study and ablation treatment, thus helping to reduce exposure times and the total time needed per patient. For clinical use the software includes versatile tools for data analysis and reduction. Our system has been developed in association with Department of Cardiology of Tampere University Hospital and has been in regular clinical use there.

Author Keywords: Cardiac electrophysiology; Arrhythmias; Data acquisition and analysis; Software
Article Outline

1. Introduction
2. Applications of cardiac electrophysiology studies
3. The system

3.1. Program and system specifications
3.2. Basic functions of the software

3.2.1. Operating modes
3.2.2. Data analysis
3.2.3. Data management
3.2.4. Printouts and patient report

3.3. Realizing particular features of the software

3.3.1. Data structures and memory management
3.3.2. Manual measurements
3.3.3. Recognition of the pacing series
3.3.4. Recognition of waveforms from the His-bundle electrogram recorded during atrial pacing

4. Results and discussion
5. Availability of the software

Computer Methods and Programs in Biomedicine
Volume 61, Issue 3, March 2000, Pages 221-231