在女性，低的左室射血分数规定为61%，而男性为55%。
A low LVEF was defined as below 61% in women and below 55% in men.
结果表明，用线性回归模型计算的左室射血分数、每搏量、心输出量在较低心率时模拟数值较为可信，在较高心率时每搏量模拟数值不可靠。
It showed that the simulation results of LVEF, SV and CO were reliable at a low heart rate with linear regression model, but unreliable at a high heart rate.
目的：探讨门控心肌灌注断层显像（GMPT）、平衡法心血池显像（GBPI）与心动超声（UCG）测定左室射血分数（LVEF）的差别。
Purpose: To compare gated myocardial perfusion tomography (GMPT), gated blood pool imaging (GBPI) and ultrasound cardiography (UCG) in left ventricular ejection fraction (LVEF) calculation.
DHF是指有心衰的症状和体征而左室收缩功能正常(射血分数大于45%)。
DHF occurs when signs and symptoms of heart failure are present but left ventricular systolic function is preserved (i. e. ejection fraction greater than 45 percent).
门冬氨酸钾镁可使37.50%的患者心功能改善，但左室射血分数无明显变化。
Potassium magnesium aspartate could improve heart function in 37.50%patients only but with no effect on LVEF.
舒张性心力衰竭是以舒张功能异常为特征而左室射血分数正常的心力衰竭。
Diastolic heart failure is a kind of heart failure characterized by an abnormality of diastolic function and a normal left ventricular ejection fraction.
分析血清C反应蛋白水平与心功能分级、心脏解剖参数和左室射血分数的相关性。
The correlations of serum level of C reactive protein with grade of cardiac function, cardiac anatomic indexes and left ventricular ejection fraction were analyzed.
目的验证重建心阻抗图测量左室射血分数（LEF）的可靠性。
Objective To Validte the Yeliabil of left ventricle ejection fraction(LEF) measured by reconstructed impedance cardiography(RICG).
随访复查超声心动图，计算左室的整体室壁运动指数和左室射血分数。
The left ventricular wall motion score index (WMSI) and left ventricular ejection fraction were calculated by echocardiography.
结论：溶栓疗法可降低室壁瘤的发生率，提高左室射血分数。
Conclusions: the thrombolytic therapy could decrease the incidence of va formation and enhance the value of LVEF.
随访两组患者的左室收缩末期容积(LVESV)、左室舒张末期容积(LVEDV)、左室射血分数(LVEF)及心脏事件。
Left ventricular end diastolic volume (LVEDV), left ventricular end systolic volume (LVESV), left ventricular ejection fraction (LVEF) and cardiac events in each group were followed up.
四个月后，接收干细胞治疗的16位病人平均左室射血分数38.5%，而对照组病人(不接受干细胞治疗)左室射血分数无变化。
Four months later, the 16 patients who received the stem cells had an average LVEF of 38.5%, while patients in the control group (who didn't get the stem cells) showed no change.
更值得注意的是，接受治疗一年后，病人左室射血分数提高更多，达到42.5%。
Even more dramatically, after one year the patients LVEF had improved further, to 42.5%.
结论根据120例女性充血性心力衰竭患者峰值摄氧量与左室射血分数结果比较，峰值摄氧量与心衰程度的相关性良好。
Conclusion According to comparison of 120 patients of peak oxygen uptake with LVEF, there are well correlation between peak oxygen uptake and degree of heart failure.
观察治疗前后两组患者心功能、肾功能、超声心动图、左室射血分数（LVEF）、左室短轴缩短率（LVFS）的变化。
The changes of cardiac function, renal function, echocardiographic left ventricular ejection fraction(LVEF), left ventricular fraction shortening(LVFS) before and after treatment were compared.
观察治疗前后两组患者心功能、肾功能、超声心动图、左室射血分数（LVEF）、左室短轴缩短率（LVFS）的变化。
The changes of cardiac function, renal function, echocardiographic left ventricular ejection fraction(LVEF), left ventricular fraction shortening(LVFS) before and after treatment were compared.
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