{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T12:04:20Z","timestamp":1790251460086,"version":"4.1.0"},"reference-count":36,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2023,11,14]],"date-time":"2023-11-14T00:00:00Z","timestamp":1699920000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100007904","name":"Texas A and M University","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100007904","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Artificial Organs"],"published-print":{"date-parts":[[2024,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Hemocompatibility\u2010related adverse events (HRAE) occur commonly in patients with left ventricular assist devices (LVADs) and add to morbidity and mortality. It is unclear whether the outflow graft orientation can impact flow conditions leading to HRAE. This study presents a simulation\u2010based approach using exact patient anatomy from medical images to investigate the influence of outflow cannula orientation in modulating flow conditions leading to HRAEs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A 3D model of a proximal aorta and outflow graft was reconstructed from a computed tomography (CT) scan of an LVAD patient and virtually modified to model multiple cannula orientations (<jats:italic>n<\/jats:italic>\u2009=\u200910) by varying polar (cranio\u2010caudal) (<jats:italic>n<\/jats:italic>\u2009=\u20095) and off\u2010set (anterior\u2013posterior) (<jats:italic>n<\/jats:italic>\u2009=\u20092) angles. Time\u2010dependent computational flow simulations were then performed for each anatomical orientation. Qualitative and quantitative hemodynamics metrics of thrombogenicity including time\u2010averaged wall shear stress (TAWSS), oscillatory shear index (OSI), endothelial cell platelet activation potential (ECAP), particle residence time (PRT), and platelet activation potential (PLAP) were analyzed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Within the simulations performed, endothelial cell activation potential (ECAP) and particle residence time (PRT) were found to be lowest with a polar angle of 85\u00b0, regardless of offset angle. However, polar angles that produced parameters at levels least associated with thrombosis varied when the offset angle was changed from 0\u00b0 to 12\u00b0. For offset angles of 0\u00b0 and 12\u00b0 respectively, flow shear was lowest at 65\u00b0 and 75\u00b0, time averaged wall shear stress (TAWSS) was highest at 85\u00b0 and 35\u00b0, and platelet activation potential (PLAP) was lowest at 65\u00b0 and 45\u00b0.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>This study suggests that computational fluid dynamic modeling based on patient\u2010specific anatomy can be a powerful analytical tool when identifying optimal positioning of an LVAD. Contrary to previous work, our findings suggest that there may be an \u201cideal\u201d outflow cannula for each individual patient based on a CFD\u2010based hemocompatibility profile.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aor.14679","type":"journal-article","created":{"date-parts":[[2023,11,14]],"date-time":"2023-11-14T13:15:39Z","timestamp":1699967739000},"page":"375-385","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Computational investigation of outflow graft variation impact on hemocompatibility profile in <scp>LVADs<\/scp>"],"prefix":"10.1111","volume":"48","author":[{"given":"Byron A.","family":"Zambrano","sequence":"first","affiliation":[{"name":"J. Mike Walker '66 Department of Mechanical Engineering Texas A&amp;M University  College Station Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2031-6403","authenticated-orcid":false,"given":"Shannon I.","family":"Wilson","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering Texas A&amp;M University  College Station Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3231-789X","authenticated-orcid":false,"given":"Salma","family":"Zook","sequence":"additional","affiliation":[{"name":"Houston Methodist, Department of Cardiology Houston Methodist Research Hospital  Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-8787-2220","authenticated-orcid":false,"given":"Bansi","family":"Vekaria","sequence":"additional","affiliation":[{"name":"Houston Methodist, Department of Cardiology Houston Methodist Research Hospital  Houston Texas USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael R.","family":"Moreno","sequence":"additional","affiliation":[{"name":"J. 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