View in EDS

Automatic microvolt T-wave alternans identification in relation to ECG interferences surviving preprocessing

Saved in:
Bibliographic Details
Title: Automatic microvolt T-wave alternans identification in relation to ECG interferences surviving preprocessing
Authors: Burattini, Laura1, Bini, Silvia1, Burattini, Roberto r.burattini@univpm.it
Source: Medical Engineering & Physics. Jan2011, Vol. 33 Issue 1, p17-30. 14p.
Subjects: Nuclear magnetic resonance, Laplacian operator, Electrocardiography, Fourier transform spectroscopy, Adaptive antennas, Myocardial infarction, Cathode ray oscillographs, Patients
Abstract: Abstract: The aim was to investigate the effect of interferences surviving preprocessing (residual noise, baseline wanderings, respiration modulation, replaced beats, missed beats and T-waves misalignment) on automatic identification of T-wave alternans (TWA), an ECG index of risk for sudden cardiac death. The procedures denominated fast-Fourier-transform spectral method (FFTSM), complex-demodulation method (CDM), modified-moving-average method (MMAM), Laplacian-likelihood-ratio method (LLRM), and adaptive-match-filter method (AMFM) were applied to interferences-corrupted synthetic ECG tracings and Holter ECG recordings from control-healthy subjects (CH-group; n =25) and acute-myocardial-infarction patients (AMI group; n =25). The presence of interferences in simulated data caused detection of false-positive TWA by all techniques but the FFTSM and AMFM. Clinical applications evidenced a discrepancy in that the FFTSM and LLRM detected no more than one TWA case in each population, whereas the CDM, MMAM, and AMFM detected TWA in all CH-subjects and AMI-patients, with significantly lower TWA amplitude in the former group. Because the AMFM is not prone to false-positive TWA detections, the latter finding suggests TWA as a phenomenon having continuously changing amplitude from physiological to pathological conditions. Only occasional detection of TWA by the FFTSM and LLRM in clinics can be ascribed to their limited ability in identifying TWA in the presence of interferences surviving preprocessing. [ABSTRACT FROM AUTHOR]
Copyright of Medical Engineering & Physics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 57301494
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Automatic microvolt T-wave alternans identification in relation to ECG interferences surviving preprocessing
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Burattini%2C+Laura%22">Burattini, Laura</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bini%2C+Silvia%22">Bini, Silvia</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Burattini%2C+Roberto%22">Burattini, Roberto</searchLink><i> r.burattini@univpm.it</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Medical+Engineering+%26+Physics%22">Medical Engineering & Physics</searchLink>. Jan2011, Vol. 33 Issue 1, p17-30. 14p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Nuclear+magnetic+resonance%22">Nuclear magnetic resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Laplacian+operator%22">Laplacian operator</searchLink><br /><searchLink fieldCode="DE" term="%22Electrocardiography%22">Electrocardiography</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+transform+spectroscopy%22">Fourier transform spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Adaptive+antennas%22">Adaptive antennas</searchLink><br /><searchLink fieldCode="DE" term="%22Myocardial+infarction%22">Myocardial infarction</searchLink><br /><searchLink fieldCode="DE" term="%22Cathode+ray+oscillographs%22">Cathode ray oscillographs</searchLink><br /><searchLink fieldCode="DE" term="%22Patients%22">Patients</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The aim was to investigate the effect of interferences surviving preprocessing (residual noise, baseline wanderings, respiration modulation, replaced beats, missed beats and T-waves misalignment) on automatic identification of T-wave alternans (TWA), an ECG index of risk for sudden cardiac death. The procedures denominated fast-Fourier-transform spectral method (FFTSM), complex-demodulation method (CDM), modified-moving-average method (MMAM), Laplacian-likelihood-ratio method (LLRM), and adaptive-match-filter method (AMFM) were applied to interferences-corrupted synthetic ECG tracings and Holter ECG recordings from control-healthy subjects (CH-group; n =25) and acute-myocardial-infarction patients (AMI group; n =25). The presence of interferences in simulated data caused detection of false-positive TWA by all techniques but the FFTSM and AMFM. Clinical applications evidenced a discrepancy in that the FFTSM and LLRM detected no more than one TWA case in each population, whereas the CDM, MMAM, and AMFM detected TWA in all CH-subjects and AMI-patients, with significantly lower TWA amplitude in the former group. Because the AMFM is not prone to false-positive TWA detections, the latter finding suggests TWA as a phenomenon having continuously changing amplitude from physiological to pathological conditions. Only occasional detection of TWA by the FFTSM and LLRM in clinics can be ascribed to their limited ability in identifying TWA in the presence of interferences surviving preprocessing. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Medical Engineering & Physics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=57301494
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.medengphy.2010.08.014
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 17
    Subjects:
      – SubjectFull: Nuclear magnetic resonance
        Type: general
      – SubjectFull: Laplacian operator
        Type: general
      – SubjectFull: Electrocardiography
        Type: general
      – SubjectFull: Fourier transform spectroscopy
        Type: general
      – SubjectFull: Adaptive antennas
        Type: general
      – SubjectFull: Myocardial infarction
        Type: general
      – SubjectFull: Cathode ray oscillographs
        Type: general
      – SubjectFull: Patients
        Type: general
    Titles:
      – TitleFull: Automatic microvolt T-wave alternans identification in relation to ECG interferences surviving preprocessing
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Burattini, Laura
      – PersonEntity:
          Name:
            NameFull: Bini, Silvia
      – PersonEntity:
          Name:
            NameFull: Burattini, Roberto
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 01
              Text: Jan2011
              Type: published
              Y: 2011
          Identifiers:
            – Type: issn-print
              Value: 13504533
          Numbering:
            – Type: volume
              Value: 33
            – Type: issue
              Value: 1
          Titles:
            – TitleFull: Medical Engineering & Physics
              Type: main
ResultId 1