Detection of ventricular fibrillation by sequential testing

Yi Sheng Zhu, Nitish V Thakor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Ventricular fibrillation (VF) must be accurately detected by an automatic implantable cardioconverter-defibrillator and must also be discriminated from ventricular tachycardia (VT) and supraventricular tachycardia (SVT). A sequential decision rule is described to discriminate probability distributions of VF from VT and SVT. Intracardiac signals are first converted to binary sequences by comparison with a threshold. Probability distributions of threshold-crossing intervals are determined. The sequential test calculates a log-likelihood function and compares that with preset detection thresholds. The thresholds are set so as to result in desired test accuracy. Essentially, the sequential algorithm trades off the time to reach decision (number of sequential decision steps) with accuracy. In a study of 170 electrograms from humans, 95.3% of VF signals are classified in 3 s, 97.6% in 5 s, and 100% in 7 s. The sequential algorithm offers ease of implementation for implantable devices and excellent performance.

Original languageEnglish (US)
Title of host publicationComputers in Cardiology
Editors Anon
PublisherPubl by IEEE
Pages325-328
Number of pages4
StatePublished - Sep 1988
EventComputers in Cardiology 1988 - Washington, DC, USA
Duration: Sep 25 1988Sep 28 1988

Other

OtherComputers in Cardiology 1988
CityWashington, DC, USA
Period9/25/889/28/88

Fingerprint

Ventricular Fibrillation
Probability distributions
Supraventricular Tachycardia
Defibrillators
Ventricular Tachycardia
Binary sequences
Testing
Likelihood Functions
Implantable Defibrillators
Equipment and Supplies

ASJC Scopus subject areas

  • Software
  • Cardiology and Cardiovascular Medicine

Cite this

Zhu, Y. S., & Thakor, N. V. (1988). Detection of ventricular fibrillation by sequential testing. In Anon (Ed.), Computers in Cardiology (pp. 325-328). Publ by IEEE.

Detection of ventricular fibrillation by sequential testing. / Zhu, Yi Sheng; Thakor, Nitish V.

Computers in Cardiology. ed. / Anon. Publ by IEEE, 1988. p. 325-328.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhu, YS & Thakor, NV 1988, Detection of ventricular fibrillation by sequential testing. in Anon (ed.), Computers in Cardiology. Publ by IEEE, pp. 325-328, Computers in Cardiology 1988, Washington, DC, USA, 9/25/88.
Zhu YS, Thakor NV. Detection of ventricular fibrillation by sequential testing. In Anon, editor, Computers in Cardiology. Publ by IEEE. 1988. p. 325-328
Zhu, Yi Sheng ; Thakor, Nitish V. / Detection of ventricular fibrillation by sequential testing. Computers in Cardiology. editor / Anon. Publ by IEEE, 1988. pp. 325-328
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