Abstract
Summary The oxygen availability in different medial depths of intact and autografted femoral arteries was investigated in mongrel dogs by use of a Polarographie oxygen probe. Oxygenation of the intact muscular arterial wall is non-uniform. The higher oxygen tension current in the outer than the inner zones of the normal wall is reversed when vasa vasora are functionally removed by an autograft procedure. These findings indicate that: (1) the inner, subintimal region of the arterial wall exists at a lower oxygen tension than the outer, subadvential zone; (2) the vasa vasora provide oxygen nutrition mainly to the outer regions of the arterial wall.
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