Amniotic fluid, in fact, is a kind of fluid in the amniotic cavity. Although more than 98% of the components are water, it is the environment for the fetus to survive. It can not only maintain the intrauterine temperature, but also alleviate the external impact. Its state will directly affect the development of the fetus.
in early pregnancy, the fetal sac is small and only a little amniotic fluid covers it. Subsequently, as the fetus grows, the uterus will also increase. Therefore, the specific content of amniotic fluid will be different in different gestational weeks, which can be roughly divided into three stages:
early pregnancy: amniotic fluid volume is about 50ml; mid pregnancy: amniotic fluid volume is about 300-400ml; late pregnancy: amniotic fluid volume is about 300-400ml 1000 ml. Therefore, at present, 300-2000 is regarded as the normal range of amniotic fluid content, and 600-1500ml is the best range. In this range, the fetus is the most nourishing and the normal development of the baby can be guaranteed.
However, if the amniotic fluid content is lower than 600ml, it belongs to the category of oligohydramnios. Once the amniotic fluid content is lower than 300ml, the fetus may be in danger of asphyxia, and once it exceeds 2000ml, it is not conducive to the stable development of the fetus.
usually, from the 16th week of gestation, the development of fetal big movements begins to appear, and the pregnant mother can perceive different degrees of fetal movement. At first, the strength is different and disorderly. However, with the increase of gestational weeks, the number of fetal movements of the baby will be more and more, and the force will become more and more regular.
if fetal movement has always been in a normal and regular state, the amniotic fluid state is very healthy and the baby is very comfortable to live in. On the contrary, if there is abnormal fetus, or even accompanied by abdominal pain, it is likely that there is something wrong with amniotic fluid, which requires timely medical examination.
generally, in the early pregnancy, the fetal size changes little, and the abdominal circumference growth is not obvious, but after the second trimester, the abdomen bulges rapidly, and the abdominal circumference growth basically follows the following rules:
the abdominal circumference growth is slow, about 0.8cm per week, 20-24 weeks, the fastest growth rate, about 1.6cm per week; after 24 weeks, the abdominal circumference growth slows down After 36 weeks of gestation, it slowed down again, about 0.3cm per week.
if the pregnant mother finds that the abdominal circumference growth is not up to the standard for two consecutive weeks, or there is no growth, it may be oligohydramnios. If the abdominal circumference growth exceeds 2cm in a single week, it may be excessive amniotic fluid. The pregnant mother should be vigilant and seek medical advice in time.
this kind of pregnant mother usually has healthy body, normal endocrine and fast metabolism, so the internal environment of the body is better, especially the powerful circulation function, which can release impurities and times in amniotic fluid and maintain the clarity of amniotic fluid.
in terms of turbidity, amniotic fluid turbidity has three levels. If it is at level 1 or 2, it may induce intrauterine hypoxia, but it can be alleviated by improving daily habits and oxygen therapy.
if the amniotic fluid increases rapidly and continuously, the above methods can not be quickly alleviated. For the sake of fetal life safety, doctors usually recommend artificial rupture of membranes to terminate pregnancy.