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对大脑皮质小动脉、毛细血管和小静脉表面氧张力的直接测量。

Direct measurements of oxygen tension at the surface of arterioles, capillaries and venules of the cerebral cortex.

作者信息

Ivanov K P, Derry A N, Vovenko E P, Samoilov M O, Semionov D G

出版信息

Pflugers Arch. 1982 Mar;393(1):118-20. doi: 10.1007/BF00582403.

DOI:10.1007/BF00582403
PMID:7088679
Abstract

Direct pO2 measurements were made at the surface of arterioles, capillaries, and venules of rabbit brain cortex. The results indicate that a considerable amount of oxygen diffuses through the arteriolar and precapillary wall. Therefore, the arterial blood that reaches the capillaries already has low pO2 (43 +/- 3 mm Hg and about 75%-70% of the blood oxygen capacity).

摘要

在兔脑皮层的小动脉、毛细血管和小静脉表面进行了直接的氧分压(pO₂)测量。结果表明,相当数量的氧气扩散穿过小动脉和毛细血管前壁。因此,到达毛细血管的动脉血已经具有较低的氧分压(43±3毫米汞柱,约为血氧容量的75%-70%)。

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