| 释义 |
ischemic penumbra ischemic penumbraan area peripheral to one of ischemia where metabolism is active but blood flow is diminished. [L. paene, almost, + umbra, shadow] ischemic penumbra Neurology An ischemic zone in the brain at risk of infarction, which lies in a 'no-man's land' between a zone of low blood flow–< 25 ml/100 mg brain tissue/min and a zone where brain tissue is undergoing necrosis–flow–< 8 ml/100 mg/min. Cf Hemorrhagic stroke. |