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Träfflista för sökning "WFRF:(Laguna Pablo) srt2:(2003-2004)"

Search: WFRF:(Laguna Pablo) > (2003-2004)

  • Result 1-2 of 2
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1.
  • Leandersson, Susanna, et al. (author)
  • Estimation of respiration frequency using spatial information from the VCG
  • 2003
  • In: Medical Engineering & Physics. - 1873-4030. ; 25:6, s. 501-507
  • Journal article (peer-reviewed)abstract
    • A new method for extracting respiratory signals from the ECG/VCG is presented. The method is based on the alignment of an observed VCG loop to a reference loop with respect to the transformations of rotation and time synchronisation. The resulting series of estimated rotation angles reflects respiratory-induced changes in the electrical axis of the heart. The respiratory frequency is estimated by power spectral analysis of the derived respiration signal. The value of respiratory modulation of the heart rate is considered by analysing the cross power spectrum of the signals related to rotation angles and heart rate. For comparison, a respiratory signal derived from the QRS area of two different leads is implemented. The performance of the methods is validated on a database with simultaneously recorded VCG and respiratory signals acquired from 20 healthy subjects. The agreement between the respiratory frequencies obtained from the derived and the respiratory signals is presented. The angle-based respiratory signal is found to produce the best agreement with a gross median error of only 4.2%.
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2.
  • Solem, Kristian, et al. (author)
  • Handling of ectopic beats in heart rate variability analysis using the heart timing signal
  • 2004
  • In: IFMBE Proceedings MEDICON and HEALTH TELEMATICS 2004 "X Mediterranean Conference on Medical and Biological Engineering".
  • Conference paper (peer-reviewed)abstract
    • The problem of analyzing heart rate variability in the presence of ectopic beats is revisited. Based on the IPFM model and the closely related heart timing signal, a new technique is introduced which corrects for the occasional presence of such beats. The correction technique, which involves the occurrence times of a certain number of beats preceding the ectopic, is computationally very efficient. Based on actual heart rate data, the results suggest that the power spectrum, and related clinical indices, are more accurately estimated.
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  • Result 1-2 of 2
Type of publication
conference paper (1)
journal article (1)
Type of content
peer-reviewed (2)
Author/Editor
Sörnmo, Leif (2)
Laguna, Pablo (2)
Solem, Kristian (1)
Leandersson, Susanna (1)
University
Lund University (2)
Language
English (2)
Research subject (UKÄ/SCB)
Engineering and Technology (2)

Year

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