Vasa vasorum and angioplasty

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · Radiology; (United States)

DOI:https://doi.org/10.1148/radiology.148.1.6222396· OSTI ID:5820793

Cragg, A H; Einzig, S; Rysavy, J A; Castaneda-Zuniga, W R; Borgwardt, B; Amplatz, K

Interruption of flow in the vasa vasorum may lead to medial neceosis and aneurysm formation. The purpose of this study was to determine whether angioplasty produces significant alterations in the morphology or blood flow of the vasa vasorum of the dilated artery. The morphology of the canine vasa vasorum was studied before and after angioplasty; in a separate experiment vessel wall blood flow (VWBF) in canine carotid arteries was measured after angioplasty to determine whether physiologic regulation of the blood flow was disrupted by arterial dilation. No morphologic changes could be demonstrated in the vasa vasorum of the dilated artery; however, VWBF was increased. Adenosine caused a paradoxical decrease in VWBF of the dilated arterial segment while causing increased VWBF in the thoracic aorta. Angioplasty appears to produce persistent hyperemia in the dilated arterial wall. A paradoxical response to adenosine suggests that vasa vasorum in the dilated arterial segment are maximally vasodilated. This may be due to mechanical disruption of vasomotor tone or to release of vasoactive substances.

• Research Organization: Univ. of Minnesota Hospitals, Minneapolis
• OSTI ID: 5820793
• Journal Information: Radiology; (United States), Journal Name: Radiology; (United States) Vol. 148:1; ISSN RADLA
• Country of Publication: United States
• Language: English

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