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婴儿出生时头顶有两块没有骨质的“天窗”,医学上称为“囟门”。后面的“天窗”一般在生后3个月闭合,前囟门要到1岁半才闭合。常说的“囟门”或“天窗”主要是指前囟门。 “囟门”的表面是头皮,其下面是脑膜,再往里就是大脑和脑脊液。将手指轻轻放在上面,可以摸到跳动。那是脑脊液压力随着心脏搏动、血压变化而变化,与脉搏一致。正常婴儿坐位时,囟门略微凹陷。如发生脑膜炎、脑炎、硬脑膜下血肿、四环素或维生素A中毒等,脑组织水肿,脑室内脑脊液迅速增多,压力升高,
When the baby was born, there were two “skylights” on the top of the head without a bone, medically known as the “fontanelle”. Behind the “skylight” usually closed 3 months after birth, before the fontanelle to 1 year and a half before closing. Often said “fontanel” or “skylight” mainly refers to the front fontanelle. “Fontanelle” is the surface of the scalp, below it is the meninges, and then inside is the brain and cerebrospinal fluid. Put your finger gently on it, you can touch the beat. That is the pressure of cerebrospinal fluid changes with the heart beat, blood pressure changes, consistent with the pulse. When the normal baby sitting, fontanel slightly depressed. Such as meningitis, encephalitis, subdural hematoma, tetracycline or vitamin A poisoning, brain tissue edema, rapid increase of intracerebroventricular cerebrospinal fluid, increased pressure,