Too fast. His brain is swelling.

太快了，他都脑水肿了。

People do get high altitude pulmonary edema and high altitude cerebral edema here as well.

这里也会发生高原肺水肿和高原脑水肿。

That's high altitude cerebral edema, descent is the treatment of choice.

那就是高原脑水肿，下降是治疗的首选。

Some causes of cerebral edema are an large ischemic strokes and meningitis.

脑水肿可能的原因还包括严重脑梗死、脑膜炎。

Diffuse mass effects are caused by generalized cerebral edema, which is an excessive buildup of fluid throughout the brain tissue.

弥散性占位效应的原因可能是广泛性大脑水肿（全脑水肿），即整个脑组织液体的过积聚。

One in a thousand would get brain swelling, what we call encephalitis, and one to three per thousand would die.

千分之一会出现脑水肿，我们通常称之为脑炎，千分之一到千分之三会死亡。

That’s why the brain swelling, or cerebral edema, caused by too much water is so dangerous.

这就是为什么由过多水引起的脑肿胀或脑水肿如此危险的原因。

As the sodium concentration continues to get lower in your blood, the neurons in your brain begin to swell leading to cerebral edema.

随着钠离子浓持续降低，脑细胞出现肿胀，引起脑水肿。

Likewise, mild hypocapnia might be beneficial treatment as a temporary measure when treating cerebral edema, but hyperventilation could cause cerebral vasoconstriction.

同，低碳酸血症作为治疗脑水肿的临时措施可能是有益的治疗，但过通气会导致脑血管收缩。

In general though, that's the only sweet thing about this illness, which also causes nausea, vomiting, and if severe, mental status changes and acute cerebral edema.

恐怕也是该病唯一的“甜头”了，酮酸还会造成头晕、呕吐，严重的话，会造成精神状态改变与急性脑水肿。

For example, as pinealomas, medulloblastomas, and ependymomas enlarge - the mass of the tumor can compress nearby ventricles blocking the flow of cerebrospinal fluid which causes swelling, called hydrocephalus.

例如，随着松果体瘤、髓母细胞瘤与室管膜瘤的增大，巨大的肿瘤可以压迫一旁的脑室，阻断脑脊液的流动，从而引起组织肿胀，称为脑水肿。

Mannitol or glycerol might be given as a way to try and reverse the osmotic gradient with cerebral edema and essentially pull some of this fluid from the brain back into circulation.

甘露醇或丙三醇或许能改变脑水肿的渗透梯，让液体从脑部回到血液循环。

This causes generalized edema which is often seen in the legs, face and hands; pulmonary edema which can cause cough and shortness of breath; and cerebral edema which can cause headache, confusion, and seizures.

全身性水肿，主要累及下肢、面部和手部；以及肺水肿，造成咳嗽、气促；还有脑水肿，造成头痛、意识不清和癫痫发作。