The Left Occiput Anterior position is the most common, ideal fetal position (Optimal Foetal Position). The label for optimal fetal position is dependent on the shape of the mother’s pelvic brim. The most common pelvic shape, gynecoid, is associated with an LOA or LOT (LOL in UK, NZ, and AUS) fetal position at the start of labor.

Occiput anterior is usually the easiest position for the fetal head to traverse the maternal pelvis. Shown here is the "direct OA" position. While some fetuses deliver in this position, others deliver slightly rotated clockwise (LOA) or counterclockwise (ROA). Either way, the fetus is still considered to be an an "anterior" position.

loa胎位专业名词也就是左枕前（LOA），顾名思义胎儿头朝下进入盆骨，身体朝向左后方身体自然微蜷曲，双臂自然交叉并环抱自身，双腿蜷曲压与双臂之下。

2022年1月25日 · Speaking specifically about the left occiput anterior position (LOA baby position), it is a fetal position, wherein the baby’s head is anterior or down towards the pubic bone, facing toward the mother’s spine, but turned towards the mother’s left side – as shown in the image.

2024年2月12日 · In this birthing position, your baby's head is toward your cervix. Their face is toward your back and their back is toward your belly. During pregnancy, your baby may move into different...

A doctor or midwife may describe a fetus that lies slightly to the left as left occiput anterior or LOA, and one that lies slightly to the right as right occiput anterior or ROA. 枕前位还包括左枕前位（LOA）和 右枕前位 （ROA），其中左枕前位是最常见的胎位。 02 Posterior position. 枕后位. The posterior position is also known as the back-to-back position.

2024年2月12日 · What does left occiput anterior mean? In left occiput anterior (LOA) the ‘O’ refers to the baby and the ‘L’ and ‘A’ refer to the mother. It’s easy to remember if you think ‘pregnancy’: The ‘O' (baby) is inside the ‘L’ and ‘A’ (mother). The occiput refers to the back of the baby’s head. Left anterior refers to the mother’s pelvis.

2025年2月10日 · The left occiput anterior (LOA) means that the baby is in this position with its head facing left, and the right occiput anterior (ROA) means the baby’s head will be facing right. Additionally, the LOA is the most preferred and optimal positioning, as it aligns best with the mother’s anatomy.

2024年5月24日 · In the left occipitoanterior (LOA) position, the baby’s head is located on the left side of the mother’s pelvis, with the occiput (back of the head) closest to the mother’s belly. This position is considered optimal for birth as it facilitates an easier and smoother delivery.

There are a few different positions that your baby can be lying in: This is the most common position. The baby is head down in the parent’s womb and the crown of their head (occiput) is at the front (anterior). If the baby is lying to the left, it is called Left Occiput Anterior (LOA)