{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,7]],"date-time":"2026-09-07T11:31:32Z","timestamp":1788780692367,"version":"build-2803163510"},"reference-count":20,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2019,5,15]],"date-time":"2019-05-15T00:00:00Z","timestamp":1557878400000},"content-version":"vor","delay-in-days":1,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2020,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p\/>\n                  <jats:sec>\n                    <jats:title>OBJECTIVES<\/jats:title>\n                    <jats:p>Our goal was to assess the aortic leaflet free margin length (FML) and geometric height (gH) in a normal aortic valve (AV), aorta dilatation and aortic leaflet prolapse.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>METHODS<\/jats:title>\n                    <jats:p>We measured the FML and gH intraoperatively in 132 patients operated on for aortic insufficiency, aortic dilatation, endocarditis or fibroelastoma. Patients were divided into 3 groups: normal tricuspid AV (group 1, n\u2009=\u200912), aortic dilatation (group 2, tricuspid\u2009=\u200943, bicuspid\u2009=\u200918) and leaflet prolapse (group 3, tricuspid\u2009=\u200932, bicuspid\u2009=\u200927). The FML and gH were compared between the groups and between the leaflets within each group.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>In a normal tricuspid AV, the mean FML and gH were 34.7\u2009\u00b1\u20093.1\u2009mm and 18.8\u2009\u00b1\u20091.7\u2009mm, respectively. In group 2 tricuspid, the FML and gH were greater than those in group 1 (FML 43.7\u2009\u00b1\u20094.4, P\u2009&amp;lt;\u20090.001; gH 21.2\u2009\u00b1\u20091.8, P\u2009=\u20090.003). In group 3, tricuspid, the FML of the prolapsing leaflet was greater than the FML of the non-prolapsing leaflet (48.3\u2009\u00b1\u20095.4 vs 42.2\u2009\u00b1\u20093.6; P\u2009&amp;lt;\u20090.001). In group 2, bicuspid, FML of both leaflets were similar in group 2, but augmented on the fused leaflet compared to the non-fused leaflet in group 3 (fused 55.4\u2009\u00b1\u20096.3; non-fused 46.2\u2009\u00b1\u20096.2; P\u2009&amp;lt;\u20090.001). In groups 2 and 3 bicuspid, the gH of the non-fused leaflet was systematically greater than the fused leaflet (group 2 non-fused 24.6\u2009\u00b1\u20092.5 vs fused 20.4\u2009\u00b1\u20092.1; P\u2009&amp;lt;\u20090.001)<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSIONS<\/jats:title>\n                    <jats:p>In aortic dilatation and leaflet prolapse, FML and, to a lesser extent, gH increased significantly compared to those of normal AV function. FML and gH dimensions also depended on the valve configuration (tricuspid\/bicuspid). These data provide new insight into the pathomorphology of AV disease and will serve to further develop new methods of AV repair based on intraoperative measurements of the FML.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/ejcts\/ezz132","type":"journal-article","created":{"date-parts":[[2019,4,13]],"date-time":"2019-04-13T23:07:52Z","timestamp":1555196872000},"page":"124-132","source":"Crossref","is-referenced-by-count":22,"title":["Free margin length and geometric height in aortic root dilatation and leaflet prolapse: implications for aortic valve repair surgery"],"prefix":"10.1093","volume":"57","author":[{"given":"Saadallah","family":"Tamer","sequence":"first","affiliation":[{"name":"Division of Cardiothoracic and Vascular Surgery, Cliniques Universitaires Saint-Luc, Brussels, Belgium"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Mastrobuoni","sequence":"additional","affiliation":[{"name":"Division of Cardiothoracic and Vascular 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