Non-invasive determination of electromechanical time intervals of cardiac cycle using abdominal ECG and doppler ultrasound signals from fetal hearts

A. H. Khandoker, Y. Kimura, T. Ito, M. Palaniswami

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

6 Citations (Scopus)

Abstract

Fetal ECG and Doppler ultrasound signals provide clinically significant information concerning the physiological state of a fetus. In this study, we propose a non-invasive system to recognize the timings of fetal cardiac events on the basis of analysis of fetal ECG and Doppler ultrasound signal together. Fetal ECG was extracted from transabdominal ECG (10 normal subjects, 38-41 weeks of gestation) using blind source separation with the reference signal. Multiresolution wavelet analysis enabled the frequency contents of the Doppler signals to be linked to the opening and closing of the heart's valves (Aortic and mitral). The time intervals from R peak of fetal ECG to opening and closing of aortic valve were found to be 99.16±22.07 (msec) and 222.70±21.83 (msec) respectively. The time intervals from R peak to opening and closing of mitral valve were found to be 305.32±22.71 (msec) and 37.84±18.23 (msec) respectively.

Original languageEnglish
Title of host publicationComputers in Cardiology 2007, CAR 2007
Pages657-660
Number of pages4
DOIs
Publication statusPublished - 2007 Dec 1
EventComputers in Cardiology 2007, CAR 2007 - Durham, NC, United States
Duration: 2007 Sep 302007 Oct 3

Publication series

NameComputers in Cardiology
Volume34
ISSN (Print)0276-6574

Other

OtherComputers in Cardiology 2007, CAR 2007
Country/TerritoryUnited States
CityDurham, NC
Period07/9/3007/10/3

ASJC Scopus subject areas

  • Computer Science Applications
  • Cardiology and Cardiovascular Medicine

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