2015考研英语阅读婴儿贫血_大学英语阅读

2015考研英语阅读婴儿贫血

　　为了证实延长产后胎儿与胎盘的连接时间确实有益于儿童的健康，Andersson博士和她的同事们招募了334个没有吸烟习惯的孕妇志愿者，她们肚中的胎儿看起来都很健康。在孕妇们临产时，助产士为她们从两种生产方式中随机选择一种。在166例中，脐带在新生儿出生后的十秒内被钳住，而在另一组168例中，这个时间至少超过三分钟。

　　When the children were four months old, Dr Andersson re-examined them and took a bloodsample. Those babies whose umbilical clamps had been applied after three minutes had, onaverage, iron levels 45% higher than those whose cords had been clamped immediately. Putanother way, only 0.6% of them were anaemic, compared with 5.7% of the rapidly clamped.

　　在这些儿童四个月时，Andersson博士重新对他们进行检查并抽取血样。那些脐带在三分钟后才被钳住的儿童，体内的铁元素平均水平要比采用速钳法的儿童高出45%。从另一个角度看，相较于采用速钳法的儿童中5.7%的贫血症发生率，他们的这个比例只有0.6%。

　　Rapid clamping of the umbilicus, then, seems to cause one child in 20 to become anaemic, atleast in the early months of its life. Any experiment of this sort needs to be repeated, ofcourse, to check it is correct. But if it is, then the burden of proof in the matter of when tocut the cord will have shifted from those who would cut late to those who would cut early. Thecost of doing so would seem negligible; the benefit, great.