Tachyarrhythmia detection by implantable defibrillator

Pan Kongyan, Nitish V Thakor

Abstract

A previously published sequential hypothesis testing (SHT) algorithm is extended to the problem of the discrimination of superventricular tachycardia (SVT) and ventricular tachycardia (VT) signals by an automatic implantable cardioverter/defibrillator. The SHT algorithm compares a likelihood function against the detection thresholds at successive 1-s stages. It allows the desired accuracy to be preset and attains higher accuracy levels only at the cost of increased detection time. The implementation of the algorithm and experimental results are described. The results show that the SHT algorithm correctly discriminates most cases of SVT and VT when the rates in the atrial and ventricular leads differ. When the rates are comparable, the time delay between a beat in the atrial lead and the ventricular lead is determined. In the case of SVT the delay is always positive, whereas for VT with retrograde conduction it is zero or negative.

Original languageEnglish (US)
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
EditorsYongmin Kim, Francis A. Spelman
PublisherPubl by Alliance for Engineering in Medicine & Biology
Pages1405-1406
Number of pages2
Volume11 pt 5
Publication statusPublished - Nov 1989
EventImages of the Twenty-First Century - Proceedings of the 11th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 1 - Seattle, WA, USA
Duration: Nov 9 1989Nov 12 1989

Other

OtherImages of the Twenty-First Century - Proceedings of the 11th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 1
CitySeattle, WA, USA
Period11/9/8911/12/89

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Cite this

Kongyan, P., & Thakor, N. V. (1989). Tachyarrhythmia detection by implantable defibrillator. In Y. Kim, & F. A. Spelman (Eds.), Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings (Vol. 11 pt 5, pp. 1405-1406). Publ by Alliance for Engineering in Medicine & Biology.