{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,9]],"date-time":"2026-07-09T10:14:22Z","timestamp":1783592062959,"version":"3.55.0"},"reference-count":18,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2014,11,21]],"date-time":"2014-11-21T00:00:00Z","timestamp":1416528000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Echocardiography"],"published-print":{"date-parts":[[2015,1]]},"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Management of aortic regurgitation depends on the assessment for severity. Echocardiography remains as the most widely available tool for evaluation of aortic regurgitation. In this manuscript, we describe a novel parameter, jet length\/velocity ratio, for the diagnosis of severe aortic regurgitation.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods and Results<\/jats:title><jats:p>A total of 30 patients with aortic regurgitation were included to this study. Severity of aortic regurgitation was assessed with an aortic regurgitation index incorporating five echocardiographic parameters. Jet length\/velocity ratio is calculated as the ratio of maximum jet penetrance to mean velocity of regurgitant flow. Jet length\/velocity ratio was significantly higher in patients with severe aortic regurgitation (2.03\u00a0\u00b1\u00a00.53) compared to patients with less than severe aortic regurgitation (1.24\u00a0\u00b1\u00a00.32, P\u00a0&lt;\u00a00.001). Correlation of jet length\/velocity ratio with aortic regurgitation index was very good (r<jats:sup>2<\/jats:sup>\u00a0=\u00a00.86) and correlation coefficient was higher for jet length\/velocity ratio compared to vena contracta, jet width\/<jats:styled-content style=\"fixed-case\">LVOT<\/jats:styled-content> ratio and pressure half time. For a cutoff value of 1.61, jet length\/velocity ratio had a sensitivity of 92% and specificity of 88%, with an <jats:styled-content style=\"fixed-case\">AUC<\/jats:styled-content> value of 0.955.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Jet length\/velocity ratio is a novel parameter that can be used to assess severity of chronic aortic regurgitation. Main limitation for usage of this novel parameter is jet impringement to left ventricular wall.<\/jats:p><\/jats:sec>","DOI":"10.1111\/echo.12698","type":"journal-article","created":{"date-parts":[[2014,11,22]],"date-time":"2014-11-22T04:41:42Z","timestamp":1416631302000},"page":"3-9","source":"Crossref","is-referenced-by-count":2,"title":["Jet Length\/Velocity Ratio: A New Index for Echocardiographic Evaluation of Chronic Aortic Regurgitation"],"prefix":"10.1111","volume":"32","author":[{"given":"Tolga Sinan","family":"G\u00fcven\u00e7","sequence":"first","affiliation":[{"name":"Department of Cardiology Kafkas University School of Medicine Istanbul Turkey"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Denizhan","family":"Kara\u00e7imen","sequence":"additional","affiliation":[{"name":"Department of Cardiology Dr. Siyami Ersek Cardiovascular and Thoracic Surgery Research and Training Hospital Istanbul 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