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<title>孕 7 周还没看到胎心,是胎停了吗?</title>
<!-- 孕期专题 · 宝宝发育 · 胎心胎芽(首页「其他妈妈也在搜」按孕周分段新增,2026-11-02)
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<script>window.TOPIC = {
"slug": "taiya",
"q": "孕 7 周还没看到胎心,是胎停了吗?",
"eyebrow": "宝宝发育 · 胎心胎芽",
"title": [
"孕 7 周",
"\n",
"没看到胎心",
"是胎停吗?"
],
"sub": "一张卡看懂:几周看到什么、没看到怎么办",
"answer": "<em>不一定<\/em>:排卵晚了孕周会偏小,一般 <em>1~2 周后复查<\/em>,一次 B 超不下结论。",
"three": [
{
"b": "先孕囊、再胎芽、后胎心",
"s": "5 周左右看到孕囊,6~7 周多能看到胎心"
},
{
"b": "阴超比腹超早一周",
"s": "孕周小时医生常用阴超,看得更清"
},
{
"b": "没看到多半是孕周算早",
"s": "排卵晚的话,实际孕周会比算的小"
}
],
"sections": [
{
"type": "timeline",
"title": "B 超上依次出现",
"en": "TIMELINE",
"key": "按末次月经、月经 28 天一来、阴超计算。",
"tint": true,
"cols": [
"5周",
"6周",
"7周",
"8周+"
],
"weeks": [
[
4,
6
],
[
6,
7
],
[
7,
8
],
[
8,
14
]
],
"rows": [
{
"name": "孕囊",
"bars": [
{
"t": "能看到",
"span": 1,
"cls": ""
},
{
"t": "越来越大",
"span": 3,
"cls": "lt"
}
]
},
{
"name": "卵黄囊",
"bars": [
{
"t": "可能看到",
"span": 1,
"cls": "dash"
},
{
"t": "能看到",
"span": 1,
"cls": ""
},
{
"t": "慢慢消失",
"span": 2,
"cls": "lt"
}
]
},
{
"name": "胎芽",
"bars": [
{
"t": "还没有",
"span": 1,
"cls": "lt"
},
{
"t": "出现",
"span": 1,
"cls": ""
},
{
"t": "一天天长",
"span": 2,
"cls": "lt"
}
]
},
{
"name": "胎心",
"bars": [
{
"t": "还没有",
"span": 1,
"cls": "lt"
},
{
"t": "可能看到",
"span": 1,
"cls": "dash"
},
{
"t": "多能看到",
"span": 1,
"cls": ""
},
{
"t": "跳得稳",
"span": 1,
"cls": "lt"
}
]
}
],
"tips": [
"能看到孕囊就算宫内孕",
"胎芽、胎心可能刚出来",
"大多能看到胎心了",
"胎心跳得又快又稳"
],
"legend": [
[
"",
"能看到"
],
[
"lt",
"日常"
],
[
"dash",
"因人而异"
]
]
},
{
"type": "vs",
"title": "阴超还是腹超",
"en": "HOW",
"key": "孕周小时阴超更清楚,也是安全的。",
"tint": false,
"heads": [
"阴道 B 超",
"腹部 B 超"
],
"rows": [
{
"name": "胎心",
"a": "约 6~7 周能看到",
"b": "约 7~8 周能看到",
"win": 0
},
{
"name": "准备",
"a": "排空小便",
"b": "多数要憋尿",
"win": -1
},
{
"name": "安全",
"a": "探头轻放,不影响胚胎",
"b": "完全无创",
"win": -1
},
{
"name": "适合",
"a": "孕周小、看不清时",
"b": "孕周大一点后",
"win": -1
}
],
"note": "阴超用的是专用一次性套,动作轻柔,不会导致流产;有出血时医生也会评估后再做。"
},
{
"type": "list",
"title": "没看到胎心,常见原因",
"en": "WHY NOT YET",
"key": "多数是时间没到,不是胚胎不好。",
"tint": true,
"items": [
{
"tag": "最常见",
"tone": "ok",
"b": "排卵比平时晚",
"s": "实际受孕晚了几天,孕周就比按月经算的小"
},
{
"tag": "常见",
"tone": "ok",
"b": "月经周期偏长",
"s": "周期 35 天的人,往往要再晚一周才看得到"
},
{
"tag": "常见",
"tone": "ok",
"b": "做的是腹部 B 超",
"s": "比阴超晚一周左右才看清"
},
{
"tag": "需复查",
"tone": "warn",
"b": "孕囊大了还没有胎芽",
"s": "医生会约 1~2 周后复查对比,再下结论"
}
]
},
{
"type": "doc",
"title": "这些情况找医生",
"en": "SEE A DOCTOR",
"key": "复查前出现这些,提前去。",
"tint": false,
"b": "这些情况,及时找医生",
"s": "是否胚胎停育,需要医生按孕囊大小和复查结果判断,一次 B 超不下结论。",
"tags": [
"阴道出血",
"腹痛",
"宫内没看到孕囊",
"复查仍无胎心",
"孕吐突然全没了",
"以前有过胎停"
]
}
],
"tools": {
"title": "等胎心时用得上的工具",
"items": [
{
"id": "yundujinian",
"why": "存下第一张有胎心的 B 超",
"btn": "去存"
},
{
"id": "chanjianrili",
"why": "记下复查 B 超的日子",
"btn": "去看"
}
]
},
"sources": [
"中华医学会妇产科学分会《孕前和孕期保健指南(2018)》:首次产检(6~13+6 周)行早孕期超声,确定宫内妊娠、孕周、胎儿是否存活及数目",
"人卫版《妇产科学》(第 9 版):经阴道超声约停经 4.5~5 周可见妊娠囊,停经 6 周左右可见胚芽和原始心管搏动;经腹超声一般晚约 1 周",
"中国医师协会超声医师分会《中国产科超声检查指南》:早孕期超声判断胚胎存活需结合妊娠囊大小、胚芽长度及复查结果",
"美国放射医师协会 SRU 共识(Doubilet 2013,国外标准):头臀长≥7 mm 无心管搏动、或平均孕囊直径≥25 mm 无胚芽可诊断妊娠失败;未达标准者需间隔 7~14 天复查"
],
"heroAlt": "孕妈妈躺在检查床上看 B 超屏幕,丈夫握着她的手",
"color": [
"#7B5CC4",
"123,92,196",
"#F1EDFA"
]
};</script>
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