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孕妇接受的药物可通过胎盘直接影响胎儿的心脏活动 ,也可通过影响孕妇的血流动力学或生化改变而影响胎儿 ,在判断异常胎心变化的意义时应使用“排除法” ,以减少不必要的干预。1 孕期常用药物1 1 促胎肺成熟药———地塞米松和倍他米松 早产、先兆早产或需提前终止妊娠的高
Pregnant women receive drugs that directly affect fetal heart activity through the placenta, but also affect the fetus by affecting hemodynamics or biochemical changes in pregnant women. The “exclusion method” should be used in determining the significance of abnormal fetal heart rate to reduce Necessary intervention. 1 commonly used drugs during pregnancy 1 1 to promote fetal lung mature drugs --- dexamethasone and betamethasone premature delivery, threatened premature delivery or need to premature termination of pregnancy high