{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,26]],"date-time":"2026-09-26T13:33:25Z","timestamp":1790429605846,"version":"4.1.0"},"reference-count":31,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"2","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["JAHA"],"published-print":{"date-parts":[[2016,2,23]]},"abstract":"<jats:sec xml:lang=\"en\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p xml:lang=\"en\">\n                      The aim of this study was to compare left ventricular (\n                      <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content>\n                      ) remodeling using myocardial strain between patients with severe aortic stenosis (\n                      <jats:styled-content style=\"fixed-case\">AS<\/jats:styled-content>\n                      ) treated with transcatheter aortic valve replacement (\n                      <jats:styled-content style=\"fixed-case\">TAVR<\/jats:styled-content>\n                      ) with and without prosthesis\u2010patient mismatch (\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      ).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec xml:lang=\"en\">\n                    <jats:title>Methods and Results<\/jats:title>\n                    <jats:p xml:lang=\"en\">\n                      In a retrospective study, speckle\u2010tracking echocardiography was used to measure global longitudinal strain (\n                      <jats:styled-content style=\"fixed-case\">GLS<\/jats:styled-content>\n                      ) and strain rate (\n                      <jats:styled-content style=\"fixed-case\">GLSR<\/jats:styled-content>\n                      ), circumferential strain, and rotation before and at mid\u2010term follow\u2010up post\u2010\n                      <jats:styled-content style=\"fixed-case\">TAVR<\/jats:styled-content>\n                      . Moderate and severe\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      were defined as an effective orifice area \u22640.85 and &lt;0.65\u00a0cm\n                      <jats:sup>2<\/jats:sup>\n                      \/m\n                      <jats:sup>2<\/jats:sup>\n                      , respectively. A total of 102 patients (median age, 83\u00a0years [77\u201388]) with severe\n                      <jats:styled-content style=\"fixed-case\">AS<\/jats:styled-content>\n                      were included. At 6\u00b13\u00a0months post\u2010\n                      <jats:styled-content style=\"fixed-case\">TAVR<\/jats:styled-content>\n                      , moderate and severe\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      were found in 32 (31%) and 9 (9%) patients. Patients without\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      had a significant regression in\n                      <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content>\n                      mass (from 134\u00b141 to 119\u00b138\u00a0g\/m\n                      <jats:sup>2<\/jats:sup>\n                      ;\n                      <jats:italic>P<\/jats:italic>\n                      =0.001) at follow\u2010up whereas those with\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      did not. There was a significant improvement in\n                      <jats:styled-content style=\"fixed-case\">LV GLS<\/jats:styled-content>\n                      (\u221212.8\u00b14.0 to \u221214.3\u00b14.3%;\n                      <jats:italic>P<\/jats:italic>\n                      =0.01),\n                      <jats:styled-content style=\"fixed-case\">GLSR<\/jats:styled-content>\n                      (\u22120.61\u00b10.20 to \u22120.73\u00b10.25\u00a0second\n                      <jats:sup>\u22121<\/jats:sup>\n                      ;\n                      <jats:italic>P<\/jats:italic>\n                      &lt;0.001), and early diastolic strain rate (0.52\u00b10.20 to 0.64\u00b10.20\u00a0second\n                      <jats:sup>\u22121<\/jats:sup>\n                      ;\n                      <jats:italic>P<\/jats:italic>\n                      &lt;0.001) in patients without\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      , but not in those with\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      . After adjustment for pre\u2010\n                      <jats:styled-content style=\"fixed-case\">TAVR<\/jats:styled-content>\n                      ejection fraction and post\u2010\n                      <jats:styled-content style=\"fixed-case\">TAVR<\/jats:styled-content>\n                      aortic regurgitation, patients without\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      had greater improvement in\n                      <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content>\n                      longitudinal strain parameters compared to those with\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      . After a median follow\u2010up of 46.1\u00a0months (interquartile range, 35.4\u201360.8), there was no difference in survival between patients with and without\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      .\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec xml:lang=\"en\">\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p xml:lang=\"en\">\n                      <jats:styled-content style=\"fixed-case\">TAVR<\/jats:styled-content>\n                      was associated with an incidence of\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      of 40%. Greater reverse\n                      <jats:styled-content style=\"fixed-case\">LV<\/jats:styled-content>\n                      remodeling using myocardial strain was evident in patients without\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      compared to\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      . Presence of\n                      <jats:styled-content style=\"fixed-case\">PPM<\/jats:styled-content>\n                      was not associated with mortality.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1161\/jaha.115.002866","type":"journal-article","created":{"date-parts":[[2016,2,8]],"date-time":"2016-02-08T23:17:15Z","timestamp":1454973435000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":35,"title":["Impact of Prosthesis\u2010Patient Mismatch on Left Ventricular Myocardial Mechanics After Transcatheter Aortic Valve Replacement"],"prefix":"10.1161","volume":"5","author":[{"given":"Fr\u00e9d\u00e9ric","family":"Poulin","sequence":"first","affiliation":[{"name":"Peter Munk Cardiac Center, Toronto General Hospital, University of Toronto Toronto Ontario, Canada"},{"name":"Research Center, H\u00f4pital du Sacr\u00e9\u2010Coeur de Montr\u00e9al, University of Montreal Montreal Quebec, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Teerapat","family":"Yingchoncharoen","sequence":"additional","affiliation":[{"name":"Cleveland Clinic Foundation, Cleveland, OH"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William M.","family":"Wilson","sequence":"additional","affiliation":[{"name":"Peter Munk Cardiac Center, Toronto General Hospital, University of Toronto Toronto Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eric M.","family":"Horlick","sequence":"additional","affiliation":[{"name":"Peter Munk Cardiac Center, Toronto General Hospital, University of Toronto Toronto Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Philippe","family":"G\u00e9n\u00e9reux","sequence":"additional","affiliation":[{"name":"Research Center, H\u00f4pital du Sacr\u00e9\u2010Coeur de Montr\u00e9al, University of Montreal Montreal Quebec, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E. 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