{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,12]],"date-time":"2025-11-12T03:23:34Z","timestamp":1762917814361,"version":"3.37.3"},"reference-count":20,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2017,12,22]],"date-time":"2017-12-22T00:00:00Z","timestamp":1513900800000},"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":[[2018,3]]},"abstract":"Aims<\/jats:title>Neither two\u2010 nor three\u2010dimensional (3D) planimetry of the mitral valve (MV<\/jats:styled-content>) orifice takes the mitral commissures into account. Thus, if the commissures are not completely fused, the MV<\/jats:styled-content> orifice will not be planar, and MV<\/jats:styled-content> area (MVA<\/jats:styled-content>) will be underestimated. The study aimed to validate a novel method for measurement of the MVA<\/jats:styled-content> using a software that traces the MV<\/jats:styled-content> orifice including the commissures.<\/jats:p><\/jats:sec>Methods and results<\/jats:title>The study included 30 patients undergoing percutaneous balloon mitral valvuloplasty for severe rheumatic mitral stenosis. All performed 3D transesophageal echocardiography (TEE<\/jats:styled-content>) immediately before the procedure. MVA<\/jats:styled-content> was measured using the mitral valve navigation (MVN<\/jats:styled-content>) software of the Philips Q\u2010Lab 10.2 in a diastolic frame with maximum diastolic opening of the MV<\/jats:styled-content>. Regular 3D planimetry of the MV<\/jats:styled-content> orifice was also performed. Before balloon dilation, the MVA<\/jats:styled-content> was calculated invasively using the Gorlin's formula. No significant difference was detected between MVN<\/jats:styled-content>\u2010derived MVA<\/jats:styled-content> and Gorlin\u2010derived MVA<\/jats:styled-content> (0.98\u00a0cm2<\/jats:sup> vs. 1.0\u00a0cm2<\/jats:sup>, P<\/jats:italic>\u00a0=\u00a0.33). A statistically significant difference was detected between Planimetry\u2010derived MVA<\/jats:styled-content> and Gorlin\u2010derived MVA<\/jats:styled-content> (0.8\u00a0cm2<\/jats:sup> vs. 1.0\u00a0cm2<\/jats:sup>, P<\/jats:italic>\u00a0<\u00a0.001). There were significant linear correlations between MVN<\/jats:styled-content>\u2010derived MVA<\/jats:styled-content> and Gorlin\u2010derived MVA<\/jats:styled-content> (r<\/jats:italic>\u00a0=\u00a0.84, P<\/jats:italic>\u00a0<\u00a0.001). Using Bland\u2013Altman analysis, Gorlin\u2010derived MVA<\/jats:styled-content> showed better and relatively narrower limits of agreement with MVN<\/jats:styled-content>\u2010derived MVA<\/jats:styled-content> than planimetry\u2010derived MVA<\/jats:styled-content>.<\/jats:p><\/jats:sec>Conclusion<\/jats:title>Measurement of the MVA<\/jats:styled-content> using the MVN<\/jats:styled-content> method is feasible and is more correlated to the invasively measured MVA<\/jats:styled-content> than the 3D planimetry method. This is the most accurate method of measuring the MVA<\/jats:styled-content> that takes MV<\/jats:styled-content> commissures into account.<\/jats:p><\/jats:sec>","DOI":"10.1111\/echo.13786","type":"journal-article","created":{"date-parts":[[2017,12,24]],"date-time":"2017-12-24T08:15:34Z","timestamp":1514103334000},"page":"368-374","source":"Crossref","is-referenced-by-count":15,"title":["A novel method to measure mitral valve area in patients with rheumatic mitral stenosis using three\u2010dimensional transesophageal echocardiography: Feasibility and validation"],"prefix":"10.1111","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8716-7767","authenticated-orcid":false,"given":"Hani M.","family":"Mahmoud Elsayed","sequence":"first","affiliation":[{"name":"Adult Cardiology Department Aswan Heart Centre Magdi Yacoub Foundation Aswan 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