Left and Right Atrial Contribution to the P-wave in Realistic Computational Models

Axel Loewe, Martin W. Krueger, Pyotr Platonov, Fredrik Holmqvist, Olaf Doessel, Gunnar Seemann

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

ECG markers derived from the P-wave are used frequently to assess atrial function and anatomy, e.g. left atrial enlargement. While having the advantage of being routinely acquired, the processes underlying the genesis of the P-wave are not understood in their entirety. Particularly the distinct contributions of the two atria have not been analyzed mechanistically. We used an in silico approach to simulate P-waves originating from the left atrium (LA) and the right atrium (RA) separately in two realistic models. LA contribution to the P-wave integral was limited to 30% or less. Around 20% could be attributed to the first third of the P-wave which reflected almost only RA depolarization. Both atria contributed to the second and last third with RA contribution being about twice as large as LA contribution. Our results foster the comprehension of the difficulties related to ECG-based LA assessment.
Original languageEnglish
Title of host publicationLecture Notes in Computer Science
PublisherSpringer
Pages439-447
Volume9126
DOIs
Publication statusPublished - 2015
Event8th International Conference on Functional Imaging and Modeling of the Heart(FIMH) - Maastricht, Netherlands
Duration: 2015 Jun 252015 Jun 27

Publication series

Name
Volume9126
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference8th International Conference on Functional Imaging and Modeling of the Heart(FIMH)
Country/TerritoryNetherlands
CityMaastricht
Period2015/06/252015/06/27

Subject classification (UKÄ)

  • Cardiac and Cardiovascular Systems
  • Radiology, Nuclear Medicine and Medical Imaging

Free keywords

  • atrial enlargement
  • Left
  • Mathematical modeling
  • P-wave
  • Electrocardiogram
  • Atrial modeling

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