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A prospective analysis of 152 consecutive TAVR patients was performed. 53 patients (34.9%) had CD following TAVR, including 30 (19.7%) permanent pacemaker implantation and 23 (15.2%) new left bundle branch block. In 123 patients with 1-year follow-up, significant improvement of LV ejection fraction (LVEF) (baseline vs 12-month: 65.1\u2009\u00b1\u200913.2 vs 68.7\u2009\u00b1\u20099.1, P\u2009=\u20090.017) and reduced LV end-systolic volume (LVESV) (39.8\u2009\u00b1\u200925.8 vs 34.3\u2009\u00b1\u200917.1, P\u2009=\u20090.011) was found in non-CD group (N\u2009=\u200985), but not in CD group (N\u2009=\u200938). Both groups had significant decrease in LV mass index (baseline vs 12-month: 148.6\u2009\u00b1\u200936.9 vs. 136.4\u2009\u00b1\u200934.7 in CD group, p\u2009=\u20090.023; 153.0\u2009\u00b1\u200950.5 vs. 125.6\u2009\u00b1\u200935.1 in non-CD group, p\u2009&lt;\u20090.0001). In 46 patients with 3-year follow-up, only non-CD patients (N\u2009=\u200928) had statistically significant decrease in LV mass index (Baseline vs 36-month: 180.8\u2009\u00b1\u200958.8 vs 129.8\u2009\u00b1\u200939.1, p\u2009=\u20090.0001). Our study showed the improvement of LV systolic function, reduced LVESV and LV mass regression at 1\u00a0year could be observed in patients without CD after TAVR. Sustained LV mass regression within 3-year was found only in patients without CD.<\/jats:p>","DOI":"10.1038\/s41598-021-96297-5","type":"journal-article","created":{"date-parts":[[2021,8,18]],"date-time":"2021-08-18T06:14:09Z","timestamp":1629267249000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Impact of conduction disturbances on left ventricular mass regression and geometry change following transcatheter aortic valve replacement"],"prefix":"10.1038","volume":"11","author":[{"given":"Tsung-Yu","family":"Ko","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hsien-Li","family":"Kao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ying-Ju","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chih-Fan","family":"Yeh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ching-Chang","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ying-Hsien","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chi-Sheng","family":"Hung","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chih-Yang","family":"Chan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lung-Chun","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yih-Sharng","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mao-Shin","family":"Lin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,8,18]]},"reference":[{"key":"96297_CR1","doi-asserted-by":"publisher","first-page":"2438","DOI":"10.1056\/NEJMoa1500893","volume":"373","author":"J Reinohl","year":"2015","unstructured":"Reinohl, J. et al. 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