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我们应用心尖搏动图法,测定≥60岁老年人的左室射血分数(EF)及其周径纤维缩短率(Vcf),以评定其射血功能。
We used apical beating chart method to determine left ventricular ejection fraction (EF) and shortening rate of peripheral fibers (Vcf) of ≥60 years old in order to evaluate its ejection function.