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. 2026 Jan 20;16:2608. doi: 10.1038/s41598-025-33951-2

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© The Author(s) 2026

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Scatter plots showing: (A) LACI negative correlation with LVEDVI, (B) LACI positive correlation with total LAEF, (C) LACI positive correlation with passive LAEF, (D) LACI positive correlation with active LAEF, (E) LACI positive correlation with LA SRs, and (F) LACI negative correlation with LV GCS. LACI left atrioventricular coupling index, LAEF left atrial ejection fraction, LA SRs left atrial strain rates, LV GCS left ventricular global circumferential strain.