Amidi M
Pahlavi Med J. 1976 Jul;7(3):304-11.
The duration of systolic time interval in ten anemic, (mean Hb 3.46) and otherwise healthy individuals (mean age 15) was measured from simultaneous recording of electrocardiogram, phonocardiogram and carotid pulsation. The preejection period (PEP); left ventricular ejection time (LVET) and ratio of PEP/LVET from 20 consecutive beats were calculated and averaged. Anemia was corrected slowly and study was repeated (mean 3 1/2 weeks) later and a similar data for comparison was obtained; heart rate decreased, LVET lengthened and the ratio of PEP/LVET remained unchanged. The lengthening of the LVET was due to slower heart rate. LVET before and after correction of anemia could be predicted from regression formula reported for normals. The unchanged PEP/LVET before and after the anemia indicates no significant alteration in myocardial performance at rest.
对10名贫血（平均血红蛋白3.46）但其他方面健康的个体（平均年龄15岁），通过同步记录心电图、心音图和颈动脉搏动来测量收缩期时间间期的持续时间。计算并平均连续20次心跳的射血前期（PEP）、左心室射血时间（LVET）以及PEP/LVET比值。缓慢纠正贫血后，在（平均3.5周）之后重复该研究，并获得类似数据用于比较；心率下降，LVET延长，PEP/LVET比值保持不变。LVET的延长是由于心率减慢。贫血纠正前后的LVET可根据报道的正常回归公式预测。贫血前后PEP/LVET不变表明静息时心肌功能无明显改变。
