Midwall fractional shortening (MWFS) is a measure of left ventricular (LV) systolic function that is more reliable in case of concentric LV geometry compared to LV ejection fraction (LVEF). We hypothesized that MWFS might predict heart failure (HF) and death in a high-risk asymptomatic population, beyond other echocardiographic parameters.

中文翻译：

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社区分层无症状左心室收缩功能障碍的风险：超出左心室射血分数

中壁分数缩短（MWFS）是衡量左心室（LV）收缩功能的方法，与LV射血分数（LVEF）相比，在同心LV几何情况下更可靠。我们假设MWFS可能会预测高危无症状人群的心力衰竭（HF）和死亡，而不是其他超声心动图参数。