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- Publisher Website: 10.1016/j.ultrasmedbio.2021.01.027
- Scopus: eid_2-s2.0-85101379672
- PMID: 33622621
- WOS: WOS:000632935300004
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Article: Mutual Information Reveals Non-linear Relationships between Electrocardiographic Conduction or Repolarization Indices and Mechanical Dispersion by Speckle-Tracking Echocardiography in the General Population
Title | Mutual Information Reveals Non-linear Relationships between Electrocardiographic Conduction or Repolarization Indices and Mechanical Dispersion by Speckle-Tracking Echocardiography in the General Population |
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Authors | |
Keywords | Index of electrophysiological balance Longitudinal strain;Mechanical dispersion Speckle-tracking echocardiography T –T interval peak end |
Issue Date | 2021 |
Citation | Ultrasound in Medicine and Biology, 2021, v. 47, n. 5, p. 1408-1420 How to Cite? |
Abstract | Electrical inhomogeneities can lead to regional heterogeneity in left ventricular contraction. We investigated the correlation between electrocardiographic parameters of conduction and/or repolarization and myocardial longitudinal strain-derived parameters in a general population. Mean and dispersion (maximum–minimum) values were calculated for the electrocardiographic indices: QT interval, Tpeak–Tend interval (Tpe), JTpeak interval (JTp), JTend interval (JTe), QTpeak interval (QTp). Mechanical dispersion was assessed using the standard deviation (SD) of time-to-peak longitudinal strains (MDSD) and the difference between the longest time and shortest time to peak strain (MDdelta) by speckle-tracking echocardiography. A total of 59 patients, 60 ± 12 y, were included. Tpe, Tpe/QT, Tpe/JTp and Tpe/JTe correlated well with MDSD and MDdelta (r ≥ 0.43, p < 0.001). Mutual information revealed significant non-linear relationships between most of the electrocardiographic indices measured and mechanical dispersion. In conclusion, there is a moderate linear correlation between electrocardiographic indices reflecting repolarization heterogeneities and speckle tracking-assessed mechanical dispersion. |
Persistent Identifier | http://hdl.handle.net/10722/330436 |
ISSN | 2023 Impact Factor: 2.4 2023 SCImago Journal Rankings: 0.716 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ciobanu, Ana | - |
dc.contributor.author | Gheorghe, Gabriela Silvia | - |
dc.contributor.author | Inţă, Oana Mihaela | - |
dc.contributor.author | Zhou, Jiandong | - |
dc.contributor.author | Zhang, Qingpeng | - |
dc.contributor.author | Tse, Gary | - |
dc.date.accessioned | 2023-09-05T12:10:37Z | - |
dc.date.available | 2023-09-05T12:10:37Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Ultrasound in Medicine and Biology, 2021, v. 47, n. 5, p. 1408-1420 | - |
dc.identifier.issn | 0301-5629 | - |
dc.identifier.uri | http://hdl.handle.net/10722/330436 | - |
dc.description.abstract | Electrical inhomogeneities can lead to regional heterogeneity in left ventricular contraction. We investigated the correlation between electrocardiographic parameters of conduction and/or repolarization and myocardial longitudinal strain-derived parameters in a general population. Mean and dispersion (maximum–minimum) values were calculated for the electrocardiographic indices: QT interval, Tpeak–Tend interval (Tpe), JTpeak interval (JTp), JTend interval (JTe), QTpeak interval (QTp). Mechanical dispersion was assessed using the standard deviation (SD) of time-to-peak longitudinal strains (MDSD) and the difference between the longest time and shortest time to peak strain (MDdelta) by speckle-tracking echocardiography. A total of 59 patients, 60 ± 12 y, were included. Tpe, Tpe/QT, Tpe/JTp and Tpe/JTe correlated well with MDSD and MDdelta (r ≥ 0.43, p < 0.001). Mutual information revealed significant non-linear relationships between most of the electrocardiographic indices measured and mechanical dispersion. In conclusion, there is a moderate linear correlation between electrocardiographic indices reflecting repolarization heterogeneities and speckle tracking-assessed mechanical dispersion. | - |
dc.language | eng | - |
dc.relation.ispartof | Ultrasound in Medicine and Biology | - |
dc.subject | Index of electrophysiological balance | - |
dc.subject | Longitudinal strain;Mechanical dispersion | - |
dc.subject | Speckle-tracking echocardiography | - |
dc.subject | T –T interval peak end | - |
dc.title | Mutual Information Reveals Non-linear Relationships between Electrocardiographic Conduction or Repolarization Indices and Mechanical Dispersion by Speckle-Tracking Echocardiography in the General Population | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.ultrasmedbio.2021.01.027 | - |
dc.identifier.pmid | 33622621 | - |
dc.identifier.scopus | eid_2-s2.0-85101379672 | - |
dc.identifier.volume | 47 | - |
dc.identifier.issue | 5 | - |
dc.identifier.spage | 1408 | - |
dc.identifier.epage | 1420 | - |
dc.identifier.eissn | 1879-291X | - |
dc.identifier.isi | WOS:000632935300004 | - |