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动态观察了体外循环（ＣＰＢ）心内直视手术患儿外周血Ｔ淋巴细胞亚群和免疫球蛋白含量。结果证实，ＣＰＢ心内直视术后早期总的Ｔ淋巴细胞（Ｔｔ）和辅助性Ｔ淋巴细胞（Ｔｈ）百分率降低，抑制性Ｔ淋巴细胞（Ｔｓ）百分率增加，Ｔｈ／Ｔｓ比值倒置，免疫球蛋白Ｇ（ＩｇＧ）含量降低。说明ＣＰＢ心内直视手术可使患儿细胞免疫和体液免疫功能降低，应给予相应治疗。
Dynamic observation of peripheral blood T lymphocyte subsets and immunoglobulin contents in children undergoing open heart surgery with cardiopulmonary bypass (CPB). The results showed that the percentage of total T lymphocytes (Tt) and helper T lymphocytes (Th) decreased, the percentage of inhibitory T lymphocytes (Ts) increased and the Th / Ts ratio reversed in the early postoperative CPB. Protein G (IgG) levels decreased. Description CPB open heart surgery in children with cellular and humoral immune function can be reduced, should be given the appropriate treatment.