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. 2019 Jul 15;48(1):133–143. doi: 10.1007/s10439-019-02320-2

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Photographs of human cadaveric heart specimens showing left atrial appendage (LAA). (a) The left lateral view on the heart showing the location of the LAA. (b) Cross section through the left atrium (LA) and the LAA. Narrow left atrial appendage ostium (LAAO) and rich trabeculations (T) within the LAA are visible, which are responsible for blood stasis and clot formation. MV mitral valve, LV left ventricle, PA pulmonary artery, RV right ventricle.