{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,7]],"date-time":"2025-11-07T09:27:32Z","timestamp":1762507652318,"version":"3.40.5"},"reference-count":22,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2019,2,6]],"date-time":"2019-02-06T00:00:00Z","timestamp":1549411200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Echocardiography"],"published-print":{"date-parts":[[2019,3]]},"abstract":"<jats:sec><jats:title>Objectives<\/jats:title><jats:p>The purpose of this study was to investigate the relationship between the vortex in left ventricle (<jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content>) during the isovolumic contraction (<jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content>) period and the preejectional flow velocity in <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content> outflow tract (<jats:styled-content style=\"fixed-case\">V<jats:sub>LVOT<\/jats:sub><\/jats:styled-content>).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Color Doppler loops were acquired for vector flow mapping in apical long\u2010axis view in 76 patients with dilated cardiomyopathy, 61 patients with coronary artery disease and 36 healthy controls.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>All normals exhibited an <jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content> vortex reaching the <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content> base. <jats:styled-content style=\"fixed-case\">V<jats:sub>LVOT<\/jats:sub><\/jats:styled-content> was significantly related to <jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content> vortex area flux, transmitral A velocity, mitral annular a\u2032 velocity and E\/e\u2032 ratio, respectively. Transmitral A velocity was the only independent predictor of <jats:styled-content style=\"fixed-case\">V<jats:sub>LVOT<\/jats:sub><\/jats:styled-content> (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.292, <jats:italic>P<\/jats:italic>\u00a0=\u00a00.001). In patients the <jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content> vortex could reach the <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content> base, middle, or apex. <jats:styled-content style=\"fixed-case\">V<jats:sub>LVOT<\/jats:sub><\/jats:styled-content> was significantly related to range, area and area flux of the <jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content> vortex, <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content> size, <jats:styled-content style=\"fixed-case\">LVEF<\/jats:styled-content>, mitral annular velocities, E\/e\u2032 ratio, transmitral A velocity, and <jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content> time, respectively. Range and corrected area flux of the <jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content> vortex, <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content> end\u2010systolic short diameter, and <jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content> time were independent predictors of <jats:styled-content style=\"fixed-case\">V<jats:sub>LVOT<\/jats:sub><\/jats:styled-content> (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a00.608, <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a00.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>In normals, the transmitral A velocity (momentum) is efficiently transferred from mitral orifice to <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content> outflow tract by a normally formed <jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content> vortex, and transmitral A velocity is the only independent predictor of <jats:styled-content style=\"fixed-case\">V<jats:sub>LVOT<\/jats:sub><\/jats:styled-content>. However, in patients with a wide range of <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content> enlargement and dysfunction, the momentum transfer is associated with not only the <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content> dimension and function, but also the range and volume of the <jats:styled-content style=\"fixed-case\">IVC<\/jats:styled-content> vortex.<\/jats:p><\/jats:sec>","DOI":"10.1111\/echo.14277","type":"journal-article","created":{"date-parts":[[2019,2,6]],"date-time":"2019-02-06T18:35:33Z","timestamp":1549478133000},"page":"558-566","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Relationship between left ventricular vortex and preejectional flow velocity during isovolumic contraction studied by using vector flow mapping"],"prefix":"10.1111","volume":"36","author":[{"given":"Qiaozhen","family":"Li","sequence":"first","affiliation":[{"name":"Graduate School of Dalian Medical University  Dalian China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Liang","family":"Huang","sequence":"additional","affiliation":[{"name":"Department of Urinary Surgery PLA 967th Hospital  Dalian China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Na","family":"Ma","sequence":"additional","affiliation":[{"name":"Department of Ultrasound PLA 967th Hospital  Dalian China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhiguo","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Ultrasound PLA 967th Hospital  Dalian China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yu","family":"Han","sequence":"additional","affiliation":[{"name":"Graduate School of Dalian Medical University  Dalian China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ling","family":"Wu","sequence":"additional","affiliation":[{"name":"Graduate School of Jinzhou Medical University  Jinzhou 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