If the fetus is in the breech position, it is best for pregnant women to sleep on their left side, and it is not recommended to sleep on their back or right side, as sleeping on their back or right side can cause compression of the abdominal artery, affecting the fetus's blood circulation and growth, which is unfavorable for the fetus's growth and development. Moreover, a breech position is an abnormal fetal position. If such a phenomenon occurs before 28 weeks of pregnancy, there is more space in the uterus, and the fetal position is likely to change later.
Reasons for fetal breech position:
1. Reasons from the pregnant mother:
1) If the pregnant woman has loose abdominal walls, excessive amniotic fluid, or excessive space inside the cervix, the fetus has excessive freedom of movement in the uterine cavity, leading to a breech position.
2) A small space inside the cervix limits the fetus's movement in the uterine cavity, affecting the fetus's ability to naturally turn its head down, resulting in a breech position.
3) Tight abdominal walls, oligohydramnios, and uterine malformations in the parturient can cause the fetus's head to fail to naturally turn downward, resulting in a breech position.
4) Narrow pelvis, placenta previa, and obstruction of the soft birth canal can easily cause fetal engagement to be blocked, leading to a breech position.
2. Reasons from the fetus:
1) A smaller fetus has a larger range of movement in the pregnant woman's uterus, resulting in a breech position.
2) Twin pregnancy and fetal malformations are also reasons why the fetus cannot be in the normal position.
3) Issues such as the fetus's head not fitting into the pelvis and an excessively short umbilical cord can also cause a breech position.
4) A large fetus has limited movement in the pregnant woman's abdomen, making it difficult for the head to turn downward.