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The patients were examined with echocardiography, right heart catherization and cardiac magnetic resonance imaging prior to PEA and 12\u00a0months after.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Right atrium (RA) volume was significantly reduced from baseline to 12\u00a0months after PEA (30\u2009\u00b1\u20099 vs 23\u2009\u00b1\u20095\u00a0ml\/m\n                      <jats:sup>2<\/jats:sup>\n                      ,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.005). TA annular area in systole remained unchanged (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.11) and was comparable to controls. The leaflet area, tenting volume and tenting height in systole were significantly increased at baseline but decreased significantly with comparable values to controls after 12\u00a0months (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.005). There was correlation between the changes of right ventricular-pulmonary artery coupling and changes of TV tenting height (r\u2009=\u2009\u2212\u20090.54,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.02), TV tenting volume (r\u2009=\u2009\u2212\u20090.73,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001) and TV leaflet area (\u2212\u20090.57,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.01) from baseline to 12\u00a0months after PEA. Tricuspid regurgitation jet area\/RA area was significantly (\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.01) reduced from baseline (30\u2009\u00b1\u200913%) to 12\u00a0months after PEA (9\u2009\u00b1\u200910%).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>In CTEPH patients selected for PEA, TV tenting height, volume and valve area are significantly increased whereas annulus size and shape are less affected. The alterations in TV morphology are fully reversed after PEA and correlates to improvements of right ventricular-pulmonary arterial coupling.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s12872-021-02248-3","type":"journal-article","created":{"date-parts":[[2021,9,17]],"date-time":"2021-09-17T07:05:47Z","timestamp":1631862347000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Reverse remodeling of tricuspid valve morphology and function in chronic thromboembolic pulmonary hypertension patients following pulmonary thromboendarterectomy: a cardiac magnetic resonance imaging and invasive hemodynamic study"],"prefix":"10.1186","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6583-2885","authenticated-orcid":false,"given":"Christian Alcaraz","family":"Frederiksen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Farhad","family":"Waziri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steffen","family":"Ringgaard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S\u00f8ren","family":"Mellemkj\u00e6r","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tor Skibsted","family":"Clemmensen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vibeke Elisabeth","family":"Hjortdal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sten Lyager","family":"Nielsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steen Hvitfeldt","family":"Poulsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,9,17]]},"reference":[{"issue":"6","key":"2248_CR1","doi-asserted-by":"publisher","first-page":"897","DOI":"10.1016\/S0002-9149(98)01064-9","volume":"83","author":"JP Singh","year":"1999","unstructured":"Singh JP, Evans JC, Levy D, Larson MG, Freed LA, Fuller DL, et al. 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The study was approved by The Central Denmark Region Committees on Health Research Ethics (journal number 1-10-72-240-14).","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"450"}}