产前超声检查对胎儿影响的循证病案讨论

Evidence-Based Case Report on the Effect of Ultrasound Exposure to Pregnant Women on Fetus Development

目的检索超声检查暴露对母亲及胎儿的影响的证据,并对其进行评价,以指导临床正确合理地使用.方法首先提出临床问题,然后对PROQUEST(1984～2004年)、SUMSEARCH(1984～2004年)、Cochrane图书馆(2004年第4期)进行检索,并对检索到的证据进行评价. 检索词为repeated ultrasound exposure and chilren development (outcome).结果共检索到系统评价3篇,随机对照试验3篇,队列研究1篇及病例对照1篇.大多数研究表明,超声检查对胎儿的影响还有待证实;也有研究表明超声检查对胎儿宫内发育及其出生后语言能力有一定影响.结论孕妇应该尽量避免超声检查.

Objective To search and review the best clinical evidence to direct the u se of ultrasound. Methods After deve loping clinical questions, we searched the following databases for evidence: PRO QUEST (19842004), SUMSEARCH (19802004) and The Cochrane Library (Issue 4,2004). The key words were “repeated ultrasound exposur e and children development (outcome)”. Results We found 3 systematic reviews, 3 randomized controlled trials, 1 cohort study and 1 case-control study. Most of the trials concluded that the effects of ultr asound to fetus were to be identified, some of the trials showed that ultrasound exposure could have an effect on fetus growth and language ability after delive ry. Conclusions The pregnant women should avoi d ultrasound as much as possible.