玲宝贝の乖

关于胎位，很多准妈妈都不太清楚，专业术语太凹口，偶找了一些平面图和立体图，看图说话，更容易理解

还有英文的介绍（翻译了几个关键词，未必准确哈）：


胎位为先露部的代表在产妇骨盆的位置，亦即在骨盆的四相位--左前、右前、左后、右后。
顶先露的代表骨为枕骨（occipital，缩写为O）；臀先露的代表骨为骶骨（sacrum，缩写为S）。


Anterior Fontanel前卤门
The bones of the fetal scalp are soft and meet at "suture lines."  

Posterior Fontanel后卤门
The occiput of the baby has a similar obstetric landmark, the "posterior fontanel."

Occiput Anterior (OA)枕前
Occiput anterior is usually the easiest position for the fetal head to traverse the maternal pelvis.



Left Occiput Anterior (LOA)左枕前（这种胎位是最常见，也是最好的一种）
The fetal position is often described using three letters.最为常见
This is an example of LOA, meaning:
Left; Occiput; Anterior
In other words, the fetal occiput is directed towards the mother's left, anterior side.

Right Occiput Anterior (ROA)右枕前
This is an example of ROA, meaning:
Right; Occiput ; Anterior
These anterior presentations (ROA and LOA) are normal and usually are the easiest way for the fetus to traverse the birth canal.

Transverse Position
This LOT (Left, Occiput, Transverse) position and its' mirror image, ROT, are common in early labor.
As labor progresses and the fetal head descends, the occiput usually rotates anteriorly, converting this LOT to an LOA or OA as the head delivers.
If the head fails to rotate despite steady descent, this is called a "deep transverse arrest," and is common among:
Babies who are too big to come through, and
Mothers with flat pelvises that favor a transverse delivery
Women with this condition who fail to deliver spontaneously are treated with cesarean section, forceps, or vacuum extraction, depending on the clinical circumstances, available resources, and experience of the operator.


LOT左枕横

ROT右枕横

Occiput Posterior
Occiput posterior positions, including direct OP, LOP (Left Occiput Posterior) and ROP (Right Occiput Posterior) are positions favored by certain internal pelvic shapes. This position has some obstetrical significance.
Normally, if the head is at 0 Station, the biparietal diameter is at the pelvic inlet and the head is fully engaged. In posterior positions, at 0 Station, the biparietal diameter is still a couple centimeters above the pelvic inlet, meaning that the head is not fully engaged.
Babies can deliver in the posterior position, but the pelvis needs to be large enough and it usually takes longer.
Forceps are often used to deliver babies in this position, but there is controversy whether the fetus should be delivered in the posterior position, or rotated with the forceps to the anterior position. Much depends on the clinical circumstances and the experience of the operator.

OP枕后

LOP左枕后

ROP右枕后

Breech Positions臀位

The terms used for breech positions are the same as for cephalic positions, except the sacrum of the fetus is used as the identifying landmark, instead of the occiput.
Sacrum Anterior (SA) means the fetal sacrum is closest to the mother's symphysis.
Left Sacrum Anterior (LSA) means the fetal sacrum is closest to the mother's symphysis and rotated slightly to the mother's left (clockwise from direct SA).
Right Sacrum Anterior (RSA) means the fetal sacrum is closest to the mother's symphysis and rotated slightly to the mother's right (counterclockwise from direct SA).
Right Sacrum Transverse (RST)
Left Sacrum Transverse (LST)
Right Sacrum Posterior (RSP)
Left Sacrum Posterior (LSP)
Sacrum Posterior (SP)

Right Sacrum Posterior (RSP)

oceanling

看不懂

Q倩

这帖子太专业啦

小小的幸福66

我做四维的时候是右枕前ROA，正常吗？

~@云居雁~@@~

这个很形象啊

玲宝贝の乖

回复 qingqing1229 的帖子

还木~估计还得4-5天，我也没脾气了。等吧

小乖的娘

终于明白了，谢谢啊~~

麦麦1982

提前了解一下啊

qingqing1229

楼主你还没生呢？现在什么情况了？

┃幸畐尐妮

受益匪浅啊！！

旺旺:竣妮妮允

好吓人

lanxiner2010

臀位就是宝宝在妈妈肚子里站着啊？

scqsely117

哦，有翻译就好了，呵呵