{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T23:09:01Z","timestamp":1783984141750,"version":"3.55.0"},"reference-count":33,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2024,6,8]],"date-time":"2024-06-08T00:00:00Z","timestamp":1717804800000},"content-version":"vor","delay-in-days":159,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007687","name":"Svenska L\u00e4kares\u00e4llskapet","doi-asserted-by":"publisher","award":["961559"],"award-info":[{"award-number":["961559"]}],"id":[{"id":"10.13039\/501100007687","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100009780","name":"Region Sk\u00e5ne","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100009780","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003793","name":"Hj\u00e4rt-Lungfonden","doi-asserted-by":"publisher","award":["20210399"],"award-info":[{"award-number":["20210399"]}],"id":[{"id":"10.13039\/501100003793","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003793","name":"Hj\u00e4rt-Lungfonden","doi-asserted-by":"publisher","award":["20220369"],"award-info":[{"award-number":["20220369"]}],"id":[{"id":"10.13039\/501100003793","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100011077","name":"Sk\u00e5nes universitetssjukhus","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100011077","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Maggie Stephens Stiftelse"},{"DOI":"10.13039\/501100005753","name":"Kungliga Fysiografiska S\u00e4llskapet i Lund","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100005753","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,1,16]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Aims<\/jats:title>\n                  <jats:p>Atrial septal defects (ASDs) lead to volume-loaded right ventricles (RVs). ASD closure does not always alleviate symptoms or improve exercise capacity, which is possibly explained by impaired left ventricular (LV) haemodynamics. This study evaluated the effect of ASD closure in children using non-invasive LV pressure\u2013volume (PV) loops derived from cardiac magnetic resonance (CMR) imaging and brachial blood pressure, compared with controls.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods and results<\/jats:title>\n                  <jats:p>Twenty-three children with ASD underwent CMR, and 17 of them were re-examined 7 (6\u20139) months after ASD closure. Twelve controls were included. Haemodynamic variables were derived from PV loops by time-resolved LV volumes and brachial blood pressure. After ASD closure, LV volume increased [76 (70\u201386) vs. 63 (57\u201370) mL\/m2, P = 0.0001]; however, it was still smaller than in controls [76 (70\u201386) vs. 82 (78\u201389) mL\/m2, P = 0.048]. Compared with controls, children with ASD had higher contractility [2.6 (2.1\u20133.3) vs. 1.7 (1.5\u20132.2) mmHg\/mL, P = 0.0076] and arterial elastance [2.1 (1.4\u20133.1) vs. 1.4 (1.2\u20132.0) mmHg\/mL, P = 0.034]. After ASD closure, both contractility [2.0 (1.4\u20132.5) mmHg\/mL, P = 0.0001] and arterial elastance [1.4 (1.3\u20132.0) mmHg\/mL, P = 0.0002] decreased.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusion<\/jats:title>\n                  <jats:p>Despite the left-to-right atrial shunt that leads to low LV filling and RV enlargement, the LV remains efficient and there is no evidence of impaired LV haemodynamics in children. Closure of ASD at young age while the ventricle is compliant is thus beneficial for LV function. LV volumes, however, remain small after ASD closure, which may impact long-term cardiovascular risk and exercise performance.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/ehjimp\/qyae058","type":"journal-article","created":{"date-parts":[[2024,6,7]],"date-time":"2024-06-07T15:49:13Z","timestamp":1717775353000},"source":"Crossref","is-referenced-by-count":6,"title":["Atrial septal defect closure in children at young age is beneficial for left ventricular function"],"prefix":"10.1093","volume":"2","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9721-2880","authenticated-orcid":false,"given":"Pia","family":"Sj\u00f6berg","sequence":"first","affiliation":[{"name":"Clinical Physiology, Department of Clinical Sciences, Lund, Lund University , Box 188, 221 00 Lund , Sweden"},{"name":"Department of Clinical Physiology, Sk\u00e5ne University Hospital , Entr\u00e9gatan 7, 221 85 Lund , 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