Peak absorption period of cerebellomedullary cistern

The posterior cranial fossa cistern, its other academic name is the cerebellomedullar cistern. The cerebellomedullar cistern refers to the subarachnoid space, a relatively large arachnoid space formed between the thalamus and the medulla oblongata of the brainstem. This natural space is mainly located below the thalamus, on the lateral and posterior side of the medulla oblongata, and in front of the occipital bone. Under normal circumstances.

The average depth of the cerebellomedullary cistern is about 5 mm, with a standard deviation of about 3 mm. For a normal fetus, the width of the cerebellomedullary cistern increases with the increase of gestational weeks before 32 weeks, and decreases with the increase of gestational weeks after 33 weeks. In other words, the cerebellomedullary cistern is continuously reabsorbing in the middle and late stages of pregnancy. The peak absorption period of the cerebellar medullary cistern is before the birth of the fetus, close to the time of delivery. If this baby is born at full term, the longer the pregnancy is, the more adequate the cerebellar medullary cisterna magna will be absorbed.

The posterior cranial fossa cistern, also known as the cerebellomedullar cistern, is a relatively large arachnoid space in the subarachnoid space between the thalamus and the medulla oblongata of the brainstem. Under normal circumstances, the average depth of the cerebellomedullary cistern is about 5 mm, and the standard deviation is about 3 mm. For normal fetuses, before 32 weeks, the width of the cerebellomedullary cistern increases with the increase of gestational weeks. After 33 weeks, it decreases with the increase of gestational weeks. In other words, the peak period of posterior cranial fossa absorption is before the fetus is delivered.

The cerebellomedullar cistern, also known as the posterior cranial fossa cistern or the occipital cistern, is a large subarachnoid cistern that surrounds the thalamus and medulla oblongata and is a key component of the posterior cranial fossa. Widening of the cerebellomedullary cisterna magna is most often associated with clinically poor pregnancy outcomes and is characterized by a well-defined cerebellar vermis, a normal fourth ventricle, and normal supratentorial structures. For adults, since the cerebellomedullary cistern is mainly brain tissue, drugs that promote brain absorption can be taken orally, such as furosemide and acetazolamide. As for the fetus, it is generally impossible to digest the medicine.