“left ventricular ejection fraction”的概念、定义、翻译、参考文献-科学参考

单词	left ventricular ejection fraction
释义	left ventricular ejection fraction Encyclopedia 医学超声心动图释 left ventricular ejection fraction; LVEF左室射血分数心脏每搏量占左心室舒张末心室容积的比值。直接反映心室的射血效率，是临床应用广泛的反映心室收缩功能的指标。
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