Title: Selective brain cooling
标题：选择性脑降温
Content/内容：
1) The brain is especially sensitive to heat stress.
脑对于热应急特别敏感。
2) To limit the increase of intracranial hcat in case of hyperthermia or fever, a system of selective cooling is put on.
在高温或发热的情况下，为了限制颅内热升高，可应用选择性脑降温。
3) It includes two heat-exchangers.
其包括两个热交换器。
4) The first one, in the face and scalp skin, disperses calories through sweat evaporation.
第一个热交换器置于面部与头皮部，通过汗液蒸发而发散热量。
5) The second one is intracranial, close to the arteries which irrigate the brain.
第二个热交换器置于颅内，接近于灌注脑部的动脉。
6) They are connected by a vascular network.
它们与血管网相连。
7) In these conditions, the arterial blood temperature, of which cerebral temperature depends upon, is reduced by the cooled venous blood which comes from subcutaneous tissues through the skull wall.
在这些条件下，降温的静脉血从皮下组织经过颅骨壁，降低动脉血温度，并决定大脑温度。
8) On feverish children, increasing such a selective cooling by face fanning can limit cerebral thermal stress.
在发热患儿中，通过脸部扇风作选择性降湿可限制大脑热应急反应。
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