{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,27]],"date-time":"2026-07-27T13:50:36Z","timestamp":1785160236236,"version":"3.55.0"},"reference-count":31,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"11_suppl_1","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation"],"published-print":{"date-parts":[[2012,9,11]]},"abstract":"<jats:sec>\n            <jats:title>Background\u2014<\/jats:title>\n            <jats:p>In patients with mitral valve prolapse, nonprolapsed leaflets are often apically tented. We hypothesized that secondary left ventricular dilatation attributed to primary mitral regurgitation (MR) causes papillary muscle (PM) displacement, resulting in this leaflet tenting\/tethering, and that secondary tethering further exacerbates malcoaptation and contributes to MR severity.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods and Results\u2014<\/jats:title>\n            <jats:p>\n              Three-dimensional transesophageal echocardiography was performed in 25 patients with posterior mitral leaflet prolapse with an intact anterior mitral leaflet (AML) and 20 controls. From 3D zoom data sets, 11 equidistant antero-posterior cut planes of the mitral valve at midsystole were obtained. In each plane, tenting area of nonprolapsed leaflet and prolapse area of prolapsed leaflet were measured. Prolapse\/tenting volume of each region was obtained as the product of interslice distance and the prolapse\/tenting area. AML tenting volume and whole leaflet prolapse\/tenting volume were then obtained. The PM tethering distance between PM tips and anterior mitral annulus was measured from 3D full-volume data sets. The severity of MR was quantified by vena contracta area extracted from color 3D transesophageal echocardiography data sets. AML tenting volume was significantly larger in patients with posterior mitral leaflet prolapse compared with that in controls (1.2\u00b10.5 versus 0.6\u00b10.2 mL\/m\n              <jats:sup>2<\/jats:sup>\n              ;\n              <jats:italic>P<\/jats:italic>\n              &lt;0.001). Multivariate regression analysis identified independent contribution to AML tenting volume from an increase in PM tethering distance. Multivariate regression analysis identified independent contributions to MR severity (vena contracta area) from both whole leaflet tenting volume (\n              <jats:italic>r<\/jats:italic>\n              =0.44;\n              <jats:italic>P<\/jats:italic>\n              &lt;0.05) and prolapse volume (\n              <jats:italic>r<\/jats:italic>\n              =0.44;\n              <jats:italic>P<\/jats:italic>\n              &lt;0.05). AML tenting volume decreased along with left ventricular volume and PM tethering distance postrepair (n=8;\n              <jats:italic>P<\/jats:italic>\n              &lt;0.01).\n            <\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions\u2014<\/jats:title>\n            <jats:p>These results suggest that primary mitral valve prolapse with MR causes secondary mitral leaflet tethering with PM displacement by left ventricular dilatation, which further exacerbates valve leakage, constituting a vicious cycle that would suggest a pathophysiologic rationale for early surgical repair.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1161\/circulationaha.111.084178","type":"journal-article","created":{"date-parts":[[2012,9,10]],"date-time":"2012-09-10T20:34:09Z","timestamp":1347309249000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":25,"title":["Evidence of a Vicious Cycle in Mitral Regurgitation With Prolapse"],"prefix":"10.1161","volume":"126","author":[{"given":"Kyoko","family":"Otani","sequence":"first","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masaaki","family":"Takeuchi","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kyoko","family":"Kaku","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nobuhiko","family":"Haruki","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hidetoshi","family":"Yoshitani","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masataka","family":"Eto","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masahito","family":"Tamura","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masahiro","family":"Okazaki","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haruhiko","family":"Abe","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yoshihisa","family":"Fujino","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yousuke","family":"Nishimura","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert A.","family":"Levine","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yutaka","family":"Otsuji","sequence":"additional","affiliation":[{"name":"From the Second Department of Internal Medicine (K.O., M. Takeuchi, K.K., N.H., H.Y., M.O., Y.O.), Department of Cardiovascular Surgery (M.E., Y.N.), Kidney Center (M. Tamura), and Departments of Heart Rhythm Management (H.A.) and Preventive Medicine and Community Health (Y.F.), University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan; Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Boston, MA (R.A.L.)."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1093\/eurheartj\/ehq222"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.81.3.879"},{"key":"e_1_3_3_4_2","first-page":"e84","article-title":"ACC\/AHA 2006 guidelines for the management of patients with valvular heart disease: a report of the American College of Cardiology\/American Heart Association Task Force on Practice Guidelines (writing committee to revise the 1998 Guidelines for the Management of Patients With Valvular Heart Disease)\u2013developed in collaboration with the Society of Cardiovascular Anesthesiologists: endorsed by the Society for Cardiovascular Angiography and Interventions and the Society of Thoracic Surgeons","volume":"114","author":"American College of Cardiology\/American Heart Association Task Force on Practice Guidelines; Society of Cardiovascular Anesthesiologists; Society for Cardiovascular Angiography and Interventions; Society of Thoracic Surgeons","year":"2006","unstructured":"American College of Cardiology\/American Heart Association Task Force on Practice Guidelines; Society of Cardiovascular Anesthesiologists; Society for Cardiovascular Angiography and Interventions; Society of Thoracic Surgeons, Bonow RO, Carabello BA, Kanu C, de Leon AC, Faxon DP, Freed MD, Gaasch WH, Lytle BW, Nishimura RA, O'Gara PT, O'Rourke RA, Otto CM, Shah PM, Shanewise JS, Smith SC, Jacobs AK, Adams CD, Anderson JL, Antman EM, Faxon DP, Fuster V, Halperin JL, Hiratzka LF, Hunt SA, Lytle BW, Nishimura R, Page RL, Riegel B. ACC\/AHA 2006 guidelines for the management of patients with valvular heart disease: a report of the American College of Cardiology\/American Heart Association Task Force on Practice Guidelines (writing committee to revise the 1998 Guidelines for the Management of Patients With Valvular Heart Disease)\u2013developed in collaboration with the Society of Cardiovascular Anesthesiologists: endorsed by the Society for Cardiovascular Angiography and Interventions and the Society of Thoracic Surgeons. 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Geometric determinants of ischemic mitral regurgitation. 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