Summary: Many pregnant mothers, especially those who are about to give birth naturally, are always nervous when they hear the words \”abnormal fetal position\”. In fact, there is no chance to correct the fetal position before the 32nd week of pregnancy. Faced with abnormal fetal position, pregnant mothers do not need to panic excessively. I hope this popular science on fetal position can relieve some pregnant mothers’ nervousness and calmly face the problem of abnormal fetal position. Many pregnant mothers, especially those who are about to give birth naturally, are always nervous when they hear the words \”abnormal fetal position\”. In fact, there is no chance to correct the fetal position before the 32nd week of pregnancy. Faced with abnormal fetal position, pregnant mothers do not need to panic excessively. I hope this popular science on fetal position can relieve some pregnant mothers’ nervousness and calmly face the problem of abnormal fetal position.
Fetal position is an important factor in determining whether a vaginal birth can occur
There are four main factors to consider when deciding whether to give birth naturally: labor force, birth canal, fetus, and the mental factors of the pregnant mother. Among them, the fetal position is directly related to the mode of delivery of the pregnant mother. The largest part of the fetus is the fetal head. For a normally developing fetus, if the fetal head is in a normal position, it can pass through the birth canal smoothly with the help of labor force.
What is positive fetal position
The fetus in the amniotic fluid has a larger head due to the buoyancy effect, so it will appear head down and buttocks up in the third trimester of pregnancy. The normal fetal position is with the head low and hips high, with the fetal head bent forward and the occipital bone in front. This position allows the occipital bone to extend into the pelvis first, resulting in a smoother delivery, that is, a natural birth.
What are the conditions for fetal malposition?
Before 28 weeks of pregnancy, the baby is very small, has relatively large amounts of amniotic fluid, has a large range of movement, and is not fixed in position; after 32 weeks of pregnancy, the baby grows rapidly, has relatively small amniotic fluid, and the baby\’s position is relatively fixed. At this time, if the fetus does not turn into a head-down and buttocks-up position in the womb, it means the fetal position is incorrect. Common fetal malpositions include the following:
1. Breech position: The baby is in a breech position with the head up and buttocks down, and the buttocks are exposed during delivery, or the baby is in a breech position with feet or knees first. It is divided into single buttock, mixed buttock and foot positions.
2. Transverse position: During delivery, the arms and shoulders are exposed first.
3. Composite manifestation: The baby\’s head or buttocks combined with prolapse of the upper limbs and entering the pelvis at the same time are composite manifestations. Generally clinically, it is more common for the head and hands to enter the pelvis at the same time. If not corrected, natural childbirth will not be possible.
4. Malformed head position: The above three fetal positions are common fetal malpositions, but there are also fetuses that are head-down but in an abnormal fetal position, which is called cephalic malposition.
When is the fetal position fixed?
After 8 months of pregnancy (32 weeks of pregnancy), the growth rate of the fetus accelerates, and the space for movement in the uterus of the pregnant mother becomes smaller and smaller. At this time, the fetal position is relatively fixed, and the chance of the baby correcting it on his own becomes smaller. Improper fetal position will directly affect normal delivery, so it is very important for pregnant mothers to correct it in time to prevent dystocia. pregnantThe mother can correct it through appropriate exercise, massage and other methods, and it is not ruled out that the fetus can self-correct through constant rotation.
The best time for fetal malposition
Improper fetal position is also closely related to the number of weeks of pregnancy. Please refer to the following table for the optimal fetal position correction time:
Fetal position correction chest and knee advertisement
Pregnant mothers should empty their bladders, loosen their belts, and keep their chest and knees in position, 2-3 times a day, 15-20 minutes each time, for 1 week. This position allows the baby\’s buttocks to exit the pelvis and naturally changes the head position with the help of the baby\’s center of gravity. The success rate is over 70%. The prerequisite for doing this exercise is that there is no umbilical cord around the neck and the amount of amniotic fluid is normal.
chest and knee position
Lie on your knees with your chest lightly pressed to the ground. Lift your hips as high as possible. Keep your hands straight or folded under your face. Do it about 15 minutes before going to bed.
Lateral position correction
This method can be used in the transverse or posterior position. That is, the pregnant mother sleeps with the baby\’s back facing up, and can rely on gravity to correct the fetal position. Or the pregnant mother who used to sleep on the left side now sleeps on the right side, and the pregnant mother who used to sleep on the right side now sleeps on the right side. . left.
Here\’s how to do it: Lie on your side, with your upper foot back and your knees slightly bent.
Original title: What pregnant mothers must know about fetal position! 99% of mothers know these situations!
Article source Weibo: Dr. Ma Liangkun Weibo of Union Medical College