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婴儿的肾脏未发育成熟,无法排出血中过多的钠,如吃入过多的盐,易使钠在体内潴留,而发生高血压。另外,婴儿吃入盐过多,会引起体内钾大量从尿中排出。钾对肌肉(包括心肌)的收缩、舒张是必需的,缺钾过多,会引起婴儿的心肌衰弱
Infant’s kidney is not mature, can not discharge excessive blood sodium, such as eating too much salt, easy to make sodium retention in the body, and the occurrence of high blood pressure. In addition, infants eat too much salt, can cause a large number of body potassium excreted from the urine. Potassium on muscle (including myocardial) contraction, relaxation is necessary, too much potassium, can cause infants with myocardial weakness