局部缺血中氧合过度血管收缩效果中的非侵入性评价。
Non-invasive assessment of vasoconstrictive effects of hyperoxygenation in focal ischemia.
结论重型脑损伤后24小时内存在脑缺氧、缺血，伤后第2 - 4天为脑氧合过度、脑充血。
Conclusions When the brain is severely injured, there is cerebral hypoxia or ischemia during the first 24 hours, and cerebral hyperemia in the following second-fourth days.
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