Nabhan Ashraf F, Faris Mohammed A
Department of Obstetrics and Gynecology, Ain Shams University, 16 Ali Fahmi Kamel Street, Heliopolis, Cairo, Egypt, 11351.
Cochrane Database Syst Rev. 2010 Apr 14(4):CD007208. doi: 10.1002/14651858.CD007208.pub2.
Prenatal ultrasound is one of many techniques used in screening and diagnosis. It gives parents instant access to the images of the fetus. Receiving information promotes knowledge and understanding, but it may also increase maternal anxiety.
To compare high feedback versus low feedback during prenatal ultrasound for reducing maternal anxiety and improving maternal health behaviour.
We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (March 2010), the Central Register of Controlled Trials (The Cochrane Library 2010, Issue 1), MEDLINE (January 1966 to 1 March 2010), and the metaRegister of Controlled Trials (mRCT) (March 2010). We handsearched citation lists of relevant publications. We did not apply any language restrictions.
Randomized controlled trials (RCTs) of high feedback (women can see the monitor screen and receive detailed visual and verbal explanations) versus low feedback (women can not see the monitor screen and women are given only a summary statement of the scan) during prenatal ultrasound. The primary outcome measure was maternal state anxiety.
Two authors independently assessed trial quality and extracted data. We have expressed results as risk ratio (RR) or mean differences, together with their 95% confidence intervals (CI).
We included four studies (365 women). Three RCTs(346 participants) reported the effect of high versus low feedback during ultrasound on state anxiety scores (mean difference 0.92, 95% CI -0.58 to 2.43). Two trials (148 participants) reported women's views of the level of feedback. They do not show that women in the high feedback groups are more likely to choose very positive adjectives to describe their feelings after the scan (RR 3.30; 95% CI 0.73 to 14.85). Women who had a high feedback during ultrasound were more likely to stop smoking during pregnancy (one trial, 129 participants; RR 2.93; 95% CI 1.25 to 6.86) and to avoid alcohol during pregnancy (one trial, 129 participants; RR 2.96; 95% CI 1.15 to 7.60).
AUTHORS' CONCLUSIONS: There is insufficient evidence to support either high or low feedback during a prenatal ultrasound to reduce maternal anxiety and promote health behaviour.
产前超声是用于筛查和诊断的众多技术之一。它能让父母即时看到胎儿的图像。获取信息能增进知识和理解，但也可能增加母亲的焦虑。
比较产前超声检查时高反馈与低反馈对减轻母亲焦虑和改善母亲健康行为的影响。
我们检索了Cochrane妊娠与分娩组试验注册库（2010年3月）、对照试验中央注册库（《Cochrane图书馆》2010年第1期）、MEDLINE（1966年1月至2010年3月1日）以及对照试验元注册库（mRCT）（2010年3月）。我们手工检索了相关出版物的参考文献列表。我们未设任何语言限制。
关于产前超声检查时高反馈（女性可以看到监视器屏幕并接受详细的视觉和口头解释）与低反馈（女性看不到监视器屏幕且只被告知扫描的总结陈述）的随机对照试验（RCT）。主要结局指标是母亲的状态焦虑。
两位作者独立评估试验质量并提取数据。我们将结果表示为风险比（RR）或均值差异及其95%置信区间（CI）。
我们纳入了四项研究（365名女性）。三项RCT（346名参与者）报告了超声检查时高反馈与低反馈对状态焦虑评分的影响（均值差异0.92，95%CI -0.58至2.43）。两项试验（148名参与者）报告了女性对反馈水平的看法。这些试验并未表明高反馈组的女性更有可能选择非常积极的形容词来描述她们扫描后的感受（RR 3.30；95%CI 0.73至14.85）。超声检查时接受高反馈的女性在孕期更有可能戒烟（一项试验，129名参与者；RR 2.93；95%CI 1.25至6.86）以及在孕期避免饮酒（一项试验，129名参与者；RR 2.96；95%CI 1.15至7.60）。
没有足够的证据支持产前超声检查时采用高反馈或低反馈来减轻母亲焦虑并促进健康行为。
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