体内外因素导致胎宝宝一旦缺氧就会发出紧急的“SOS”信号，最具体的表现就是“发脾气”，如出现胎动异常、胎心异常等。所以胎宝宝的“心情”很重要，准妈妈一定要在第一时间读懂它！可是怎样才能知道胎宝宝“心情”如何呢？最简单的就是听胎心、数胎动，这些功课可是必不可少的。<br /> <h2 style="FONT-SIZE: 16px; FONT-FAMILY: 微软雅黑, 宋体, Arial; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; LINE-HEIGHT: 28px; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     什么是胎心？</h2> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     胎心就是胎儿的心跳。胎儿的心脏在全身发育过程中，是最早具有并发挥功能的器官，胎心音可以直接反映胎儿的情况。？</div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <h2 style="FONT-SIZE: 16px; FONT-FAMILY: 微软雅黑, 宋体, Arial; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; LINE-HEIGHT: 28px; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     妊娠后多久有胎心？</h2> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     妊娠后三四周，胎儿的心脏就开始跳动了。起初较慢，一分钟只有六七十次。这时的心脏跳动非常的微弱，在<a href="http://www.yaolan.com/zhishi/bchao/" style="TEXT-DECORATION: none; BORDER-BOTTOM: 1px dashed; WORD-BREAK: break-all; COLOR: rgb(26,84,142); PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; PADDING-RIGHT: 0px" target="_blank" title="B超">B超</a>检查时，可以从B超的荧光屏上，显示胎心搏动。</div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     到妊娠8周后，胎心跳动平均每分钟能达到180次左右。妊娠14周以后，胎儿的心跳速度下降为平均每分钟140次左右，以后保持在平均每分钟120～160次。</div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     <span class="Apple-converted-space"> </span><a href="http://www.yaolan.com/zhishi/huaiyun/" style="TEXT-DECORATION: none; BORDER-BOTTOM: 1px dashed; WORD-BREAK: break-all; COLOR: rgb(26,84,142); PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; PADDING-RIGHT: 0px" target="_blank" title="怀孕">怀孕</a>四个月左右的时候，在脐下正中线附近就可以听到胎心音，以后随着胎儿的生长及<a href="http://www.yaolan.com/zhishi/taiwei/" style="TEXT-DECORATION: none; BORDER-BOTTOM: 1px dashed; WORD-BREAK: break-all; COLOR: rgb(26,84,142); PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; PADDING-RIGHT: 0px" target="_blank" title="胎位">胎位</a>不同，胎心的位置也会有变化。因胎心音多自胎背传出，在胎背近肩胛处听得最清楚，故头位的胎头可在下腹两侧听，臀位胎头可在上腹两侧听，横侧位可在脐上或脐下腹中线处听。</div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     胎心音要与子宫动脉及胎盘杂音相区别。子宫动脉杂音是血流通过扩张的子宫动脉时所产生的吹风一样的低音响，而胎盘杂音是血流通过胎盘时所产生，二者的快慢与母体脉搏一致。胎盘杂音范围较子宫动脉杂音的范围更大些。</div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <h2 style="FONT-SIZE: 16px; FONT-FAMILY: 微软雅黑, 宋体, Arial; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; LINE-HEIGHT: 28px; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     胎心正常和异常的表现</h2> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     正常胎心规律而有力，似钟表的滴答声，为平均120-160次/分，如果突然小于120次/分或大于160次/分时，可在平缓状态下，间隔10-20分后再重复听1次。</div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     若胎心异常的状况持续存在，多数提示胎儿在宫内可能有缺氧的情况，如果是这样，胎心异常的程度越严重，可能也意味胎儿缺氧越重。但并不是所有的胎心异常都是缺氧引起的，除上述情况之外，孕妇本身的状态也密切影响着胎心的变化，如孕妇发烧时，胎心常常会超过160次/分；若孕妇患有甲状腺功能亢进，那么她本身的心率很快，胎儿的心率也常常超过160次/分；如果孕妇服用某些药物，如<a href="http://www.yaolan.com/zhishi/zaochan/" style="TEXT-DECORATION: none; BORDER-BOTTOM: 1px dashed; WORD-BREAK: break-all; COLOR: rgb(26,84,142); PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; PADDING-RIGHT: 0px" target="_blank" title="早产">早产</a>保胎时服用舒喘宁或者阿托品，都可能引起胎儿心率加快。</div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <h2 style="FONT-SIZE: 16px; FONT-FAMILY: 微软雅黑, 宋体, Arial; FONT-VARIANT: normal; WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; FONT-STYLE: normal; TEXT-ALIGN: left; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; LINE-HEIGHT: 28px; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     准妈妈可以在家监测胎心吗？</h2> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     准妈妈如果想在家检测胎心的话，需要家用胎心仪。传统的胎心仪对专业要求比较高，是否能找对位置、辨别胎心音和其他杂音，对准妈妈来讲都是未知数。</div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     如果准妈妈们特别想了解胎宝宝的状况，建议选用目前市场上比较先进的技术设备，通过专业认证为首要原则。一些智能胎心聆听器已通过IEC60950-1以及世界通用的电子设备认证IECEECB认证，使用被动式监测技术代替超声波，不会产生<a href="http://www.yaolan.com/zhishi/fushe/" style="TEXT-DECORATION: none; BORDER-BOTTOM: 1px dashed; WORD-BREAK: break-all; COLOR: rgb(26,84,142); PADDING-BOTTOM: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; PADDING-RIGHT: 0px" target="_blank" title="辐射">辐射</a>，可以放心且不限次数地使用。有些产品甚至不需要配合耦合剂或插接线，即可通过连接手机APP随时聆听、记录以及与亲友分享宝宝的动人心跳声。</div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     </div> <div style="WHITE-SPACE: normal; WORD-SPACING: 0px; TEXT-TRANSFORM: none; WORD-BREAK: break-all; COLOR: rgb(51,51,51); PADDING-BOTTOM: 0px; TEXT-ALIGN: left; PADDING-TOP: 0px; FONT: 16px/28px 微软雅黑, 宋体, Arial; PADDING-LEFT: 0px; MARGIN: 0px; WIDOWS: 1; LETTER-SPACING: normal; PADDING-RIGHT: 0px; BACKGROUND-COLOR: rgb(255,255,255); TEXT-INDENT: 0px; -webkit-text-stroke-width: 0px">     <strong style="WORD-BREAK: break-all; PADDING-BOTTOM: 0px; FONT-STYLE: normal; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; PADDING-RIGHT: 0px"> Tips：</strong>准妈妈一旦捕捉到胎宝宝异常的信号，可先平静下来在再次确认胎儿状态，之后如果异常情况持续存在，则应及时去医院就诊，以便明确诊断胎儿在宫内是否缺氧，从而针对不同的原因给予干预，保证胎儿顺利健康地生长。</div>