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Chapter 42 Left Atrial Flow
Department of Cardiothoracic Surgery, Stanford University School of Medicine; Research Institute of the Palo Alto Medical Foundation, Palo Alto, USA.
Linköping University, Department of Management and Engineering, Applied Thermodynamics and Fluid Mechanics. Linköping University, Faculty of Science & Engineering. Linköping University, Center for Medical Image Science and Visualization (CMIV).ORCID iD: 0000-0001-5526-2399
2016 (English)In: Mitral Valve Mechanics / [ed] Neil B Ingels, Jr and Matts Karlsson, Linköping University Electronic Press, 2016, 42.1-42.4 p.Chapter in book (Other academic)
Abstract [en]

Throughout left ventricular systole, with the mitral valve closed, pulmonary venous flow fills the left atrium, presumably stretching and storing potential energy in the left atrial walls. During early diastole, immediately following mitral valve opening, this potential energy is presumably available to assist rapid (E-wave) filling. Later in diastole, ECG P-wave activation triggers left atrial contraction that actively drives additional (A-wave) LV filling. When the mitral valve is open, however, there is nothing to prevent pulmonary venous flow from directly entering the left ventricle, with the left atrium acting only as a conduit. In this chapter we attempt to estimate the relative proportion of left ventricular filling that can be ascribed to the potential energy stored in the left atrial walls and left atrial contraction in relation to left ventricular filling that can be attributed to direct conduit flow.

Place, publisher, year, edition, pages
Linköping University Electronic Press, 2016. 42.1-42.4 p.
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:liu:diva-124257DOI: 10.3384/book.diva-117057ISBN: 978-91-7685-952-0 (print)OAI: oai:DiVA.org:liu-124257DiVA: diva2:897158
Available from: 2016-01-25 Created: 2016-01-25 Last updated: 2016-03-14

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