关于使用胎心仪的一点善意提醒（已经用了宝宝出生的免进）

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本人BZW潜水一年多，今天第一次发帖，原因是最近想买一台胎心仪，通过查阅的资料最后彻底打消此念。想把自己知道的跟各位JMS分享一下。

事先声明：

1.侵害了谁的利益的请不要进来骂我，本人并非有意；

2.对于使用与否也是仁者见仁智者见智，仅在此发表个人观点；

3.为什么又说使用了宝宝已经出生的不要进呢？因为本人深切体会到做妈妈的对孩子的关切，以免进来看了以后胡思乱想。

我的胎宝宝还小，所以这段时间一直是在研究各种各样的胎心仪而并没有急于下单，和所有的宝妈一样最关心的问题莫非于是否有辐射，最后锁定了sonoline C的那一款，看过的所有说明书几乎千篇一律，最关心的一句话就是“到目前为止没有任何证据显示超声波对于胎儿是有害的”，为了听到那传说中的小火车声，决定一定要让可爱的“耳朵”在12周之前到我家。期待，也许会让人放弃疑虑。但是事实就是事实，胎心仪应用的是超声波技术，这点毋庸置疑，并没有证据显示超声波对胎儿是有害的，但这是什么原因呢？很简单是他们不可能在人身上做这样的试验，试问谁可能让自己和自己的孩子去献身呢，他们可能在50个孕妇身上做这样的试验，然后等孩子生下来了再研究这些孩子的细胞吗?显然，不可能。但是2006年耶鲁大学的研究人员在怀孕了的小白鼠身上做了这样的试验，证明了每天接受固定时间的超声波阻碍了小白鼠脑细胞的生长发育。后来又在大型的哺乳动物牛身上做了试验，结论相同。下面是我看到的资料：

In 2008, the AIUM published a 130-page report titled "American Institute of Ultrasound in Medicine Consensus Report on Potential Bioeffects of Diagnostic Ultrasound"^[6] stating that there are indeed some potential risks to administering ultrasound tests, which include "postnatal thermal effects, fetal thermal effects, postnatal mechanical effects, fetal mechanical effects, and bioeffects considerations for ultrasound contrast agents."^[7] The long-term effects of tissue heating and cavitation have shown decreases in the size of red blood cells in cattle when exposed to intensities higher than diagnostic levels.^[8] However, long term effects due to ultrasound exposure at diagnostic intensity is still unknown.^[9]

There are several studies that indicate the harmful side effects on animal fetuses associated with the use of sonography on pregnant mammals. A Yale study in 2006 suggested exposure to ultrasound affects fetal brain development in mice.^[10] A typical fetal scan, including evaluation for fetal malformations, typically takes 10–30 minutes.^[11] The study showed that rodent brain cells failed to migrate to their proper positions and remained scattered in incorrect parts of the brain. This misplacement of brain cells during their development is linked to disorders ranging from "mental retardation and childhood epilepsy to developmental dyslexia, autism spectrum disorders and schizophrenia." However, this effect was only detectable after 30 minutes of continuous scanning.^[10] No link has yet been made between the test results on animals such as mice and the possible effects on humans. Although the possibility exists that biological effects on humans may be identified in the future, currently most doctors feel that based on available information the benefits to patients outweigh the risks.

有兴趣的JMS可以看一下，总之我看过之后是不会买那个了。有的时候我们总是想着做些什么才是对我的孩子最好的，其实面对复杂的社会环境，也许我们不做什么才是对宝宝最好的。当然如果有必要用的还是不可能不用，那就尽量减少时间和频率吧。20周以后可以用听诊器听到胎心，我想那就让我的喜悦迟来8周吧。在此仅用个人的浅薄看法给各位跟我一样想买胎心仪的宝妈提个醒，祝愿所有的宝贝健康幸福！

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