How does the ICD recognize the type of arrhythmia? Tachyarrhythmia discrimination in modern transvenous cardioverter defibrillators
Modern cardioverter defibrillators apply different discrimination algorithms to differentiate between supraventricular arrhythmias and malignant ventricular arrhythmias, leading to a decrease in the rate of inappropriate ICD therapies. The two main groups of discrimination algorithms are single-cham...
| Published in: | Cardiologia Hungarica |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
Promenade Kft
2025-08-01
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| Subjects: | |
| Online Access: | https://cardiologia.hungarica.eu/archive/2025-issues/2025-4-contents/how-does-the-icd-recognize-the-type-of-arrhythmia-tachyarrhythmia-discrimination-in-modern-transvenous-cardioverter-defibrillators |
| Summary: | Modern cardioverter defibrillators apply different discrimination algorithms to differentiate between supraventricular arrhythmias and malignant ventricular arrhythmias, leading to a decrease in the rate of inappropriate ICD therapies. The two main groups of discrimination algorithms are single-chamber and dual-chamber configurations. Single-chamber discriminators analyze only ventricular signals, while dual-chamber algorithms evaluate both ventricular and atrial activity. While different ICD devices distinguish between arrhythmias based on fundamentally similar criteria, the several various, manufacturer-based programming options allow for several configurable discrimination settings. The aim of this review article is to describe the essential single- and dual-chamber discrimination algorithms, emphasizing the main differences between the most commonly used devices nowadays in Hungary. |
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| ISSN: | 0133-5596 1588-0230 |