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本文对22例重型β地中海贫血,通过多门电路放射性核素心血管造影术(MUGA)进行双心室功能的研究,6例有症状,5例在输血时发生充血性心力衰竭,另1例有频发室性期外收缩。平均左室射血分数(LVEF)为63.0±7.6%,只1例LVEF在正常水平以下(<50%),平均右室射血分数(RVEF)为33.3±9.4%,只3例RVEF正常(>40%),1例RVEF在30%以下。心律失常、充血性心力衰竭和心包炎等心脏的合并症是纯合子β地中海贫血最常见的死因,有人认为
In this study, 22 patients with beta-thalassemia major were studied for biventricular function by multi-gate radionuclide angiography (MUGA), 6 patients had symptoms, 5 had congestive heart failure during blood transfusions, and 1 had Frequent ventricular contraction. The mean LVEF was 63.0 ± 7.6%. Only 1 patient had LVEF below normal level (<50%), mean RVEF was 33.3 ± 9.4%, and 3 patients had normal RVEF > 40%), 1 case of RVEF below 30%. Heart complications such as arrhythmia, congestive heart failure and pericarditis are the most common cause of death of homozygote β thalassemia