The use of angiography helps to confirm and localize injuries. Prompt correction of the vascular injury avoids disability resulting from ischemia. Although the amputation rate is low with vascular repair, the functional disability resulting from associated nerve injuries can be devastating.
The data indicate that a doubling of blood flow in the canine mesenteric resistance arteries is associated with an increase in NO concentration of at least 100 nm at the outer arterial wall. This association is probably a substantial underestimation of the actual concentration because of the geometry of the electrode tip. To our knowledge, ours is the first report of direct in vivo measurement of flow-dependent NO release in resistance arteries.
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