Aortic valve replacement (AVR) is often recommended for patients with severe aortic stenosis or chronic aortic regurgitation. These conditions result in remodeling of the left ventricle, including increased interstitial fibrosis that may persist even after AVR. These structural changes impact left ventricular (LV) mechanics, causing compromised LV diameter to occur earlier than reduced LV ejection fraction (LVEF). The aim of this study was to examine the effect of left ventricular end-diastolic diameter (LVEDD) and its role in aortic expansion one year after AVR.

中文翻译：

---

主动脉瓣置换术后患者升主动脉和左心室尺寸之间的关联。

通常建议患有严重主动脉瓣狭窄或慢性主动脉瓣反流的患者进行主动脉瓣置换术（AVR）。这些情况会导致左心室重塑，包括间质纤维化增加，甚至在 AVR 后也可能持续存在。这些结构变化影响左心室 (LV) 力学，导致 LV 直径受损早于 LV 射血分数 (LVEF) 降低。本研究的目的是检查左心室舒张末期内径 (LVEDD) 的影响及其在 AVR 一年后主动脉扩张中的作用。