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文献和实验神经外科手术的麻醉 图1 脑血流的调节 图2 颅内顺应性曲线 一、生理学基础 (一)脑血流量(cbf) 1、脑组织的供血来自颈内动脉(67%)和椎动脉(33%)。脑静脉血进入静脉窦离开颅腔后,经颈内静脉到上腔静脉。在静息状态时,成人的脑血流量占心输出量的15%-20%,平均为57ml/100g.min。 2、脑血流量取决于脑灌注区(cpp)和脑血管阻力(cvr);而cpp为平均动脉压(map)与颅内压(icp)之差
Gene Regulation During Cold Stress Acclimation in Plants
, metabolism, and growth. Cold signal in plants is transmitted to activate CBF-dependent (C-repeat/drought-responsive element binding factor-dependent) and CBF-independent transcriptional pathway, of which CBF-dependent pathway activates CBF regulon. CBF
Laser Doppler Flowmetry to Measure Changes in Cerebral Blood Flow
Laser Doppler flowmetry (LDF) is a method by which relative cerebral blood flow (CBF) of the cortex can be measured. Although the method is easy to employ, LDF only measures relative CBF, while absolute CBF cannot be quantified. LDF is useful
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