１引言 近年来，人们发现先天性心脏病（先心病）患儿易患感染性疾病，除原认为的血流动力学因素外，先心病患儿常伴有免疫缺陷［１］为此，我们对３３例先心病患儿的Ｔ细胞亚群、Ｂ细胞、免疫球蛋白进行了检测，并探讨可能的发病机制和防治方法，现将结果报告如下。２临床资料 1 Introduction In recent years, people were found to be predisposed to infectious diseases in children with congenital heart disease (CHD). In addition to the original hemodynamic factors, children with congenital heart disease often accompanied by immune deficiency [1] Therefore, we 33 cases of children with congenital heart disease T cell subsets, B cells, immunoglobulins were detected and to explore the possible pathogenesis and prevention methods, the results are reported as follows. 2 clinical data