Background Recent studies have shown that patients with moderate aortic stenosis and reduced left ventricular ejection fraction may benefit from earlier intervention instead of periodic surveillance. Identifying patients at higher risk is therefore warranted concerning the possibility of expanding aortic valve replacement indication.

中文翻译：

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使用新型回声标记识别中度主动脉瓣狭窄的高死亡风险患者

背景最近的研究表明，中度主动脉瓣狭窄和左心室射血分数降低的患者可能受益于早期干预而不是定期监测。因此，关于扩大主动脉瓣置换适应症的可能性，有必要确定高危患者。