Adaptive estimation of time-varying late potentials technical and clinical aspects

John F. Doherty, S. Narayan

Research output: Contribution to conferencePaper

Abstract

Ventricular late potentials are low amplitude, high frequency signals present in the terminal portion of the QRS. The origin of late potentials are the myocardial zones with slow and inhomogeneous activation patterns that provide the substrate for reentrant excitation leading to ventricular tachycardia[1]. The signal averaging technique can only detect ventricular late potentials which are absolutely constant in duration, morphology, and timing relative to the QRS complex; therefore, this technique does not allow the detection of dynamic changes in ventricular late potentials which may occur either spontaneously or during various diagnostic and therapeutic interventions. The clinical advantage of detecting late potentials on a beat to beat basis are obvious as it facilitates the study of the relationship between late potentials and the occurrence of spontaneous or reentrant tachycardia. In this paper; a statistical model is developed characterizing the late potentials. Each QRS beat which contains late potentials is adaptively canceled and the output of the adaptive system would be an estimate of the late potentials.

Original languageEnglish (US)
StatePublished - Dec 1 1995
EventProceedings of the 1st 1995 Regional Conference IEEE Engineering in Medicine & Biology Society and 14th Conference of the Biomedical Engineering Society of India - New Delhi, India
Duration: Feb 15 1995Feb 18 1995

Other

OtherProceedings of the 1st 1995 Regional Conference IEEE Engineering in Medicine & Biology Society and 14th Conference of the Biomedical Engineering Society of India
CityNew Delhi, India
Period2/15/952/18/95

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Adaptive systems
Chemical activation
Substrates
Statistical Models

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Doherty, J. F., & Narayan, S. (1995). Adaptive estimation of time-varying late potentials technical and clinical aspects. Paper presented at Proceedings of the 1st 1995 Regional Conference IEEE Engineering in Medicine & Biology Society and 14th Conference of the Biomedical Engineering Society of India, New Delhi, India, .
Doherty, John F. ; Narayan, S. / Adaptive estimation of time-varying late potentials technical and clinical aspects. Paper presented at Proceedings of the 1st 1995 Regional Conference IEEE Engineering in Medicine & Biology Society and 14th Conference of the Biomedical Engineering Society of India, New Delhi, India, .
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Doherty, JF & Narayan, S 1995, 'Adaptive estimation of time-varying late potentials technical and clinical aspects' Paper presented at Proceedings of the 1st 1995 Regional Conference IEEE Engineering in Medicine & Biology Society and 14th Conference of the Biomedical Engineering Society of India, New Delhi, India, 2/15/95 - 2/18/95, .

Adaptive estimation of time-varying late potentials technical and clinical aspects. / Doherty, John F.; Narayan, S.

1995. Paper presented at Proceedings of the 1st 1995 Regional Conference IEEE Engineering in Medicine & Biology Society and 14th Conference of the Biomedical Engineering Society of India, New Delhi, India, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - Adaptive estimation of time-varying late potentials technical and clinical aspects

AU - Doherty, John F.

AU - Narayan, S.

PY - 1995/12/1

Y1 - 1995/12/1

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AB - Ventricular late potentials are low amplitude, high frequency signals present in the terminal portion of the QRS. The origin of late potentials are the myocardial zones with slow and inhomogeneous activation patterns that provide the substrate for reentrant excitation leading to ventricular tachycardia[1]. The signal averaging technique can only detect ventricular late potentials which are absolutely constant in duration, morphology, and timing relative to the QRS complex; therefore, this technique does not allow the detection of dynamic changes in ventricular late potentials which may occur either spontaneously or during various diagnostic and therapeutic interventions. The clinical advantage of detecting late potentials on a beat to beat basis are obvious as it facilitates the study of the relationship between late potentials and the occurrence of spontaneous or reentrant tachycardia. In this paper; a statistical model is developed characterizing the late potentials. Each QRS beat which contains late potentials is adaptively canceled and the output of the adaptive system would be an estimate of the late potentials.

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M3 - Paper

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Doherty JF, Narayan S. Adaptive estimation of time-varying late potentials technical and clinical aspects. 1995. Paper presented at Proceedings of the 1st 1995 Regional Conference IEEE Engineering in Medicine & Biology Society and 14th Conference of the Biomedical Engineering Society of India, New Delhi, India, .