Microshunt histology in telangiectasias

Murányi

2006

Dermatologic Surgery

Self Cite

Section: Discussionsupporting

confidence: 74%

mentioning

confidence: 99%

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Laser-Doppler Examination Shows High Flow in Some Common Telangiectasias of the Lower Limb

Murányi

2006

Dermatologic Surgery

Self Cite

“…Another finding of this study was that spider angiomas were associated with reduced sublingual microcirculatory perfusion. Even though they are considered as manifestations of angiogenesis and increased blood flow, they also express arteriovenous shunting . Consequently, the increase in anastomotic flow can reduce capillary perfusion not only in skin but also in muscle …”

Section: Discussionmentioning

confidence: 99%

Sublingual microcirculatory alterations in cirrhotic patients

et al. 2018

Cirrhosis is associated with microcirculatory alterations that can be easily monitored in the sublingual mucosa. Alterations included decreased density and PPV and hyperdynamic microvessels. The most striking finding, however, was the microvascular heterogeneity. Patients with spider angiomas had more severe alterations. Larger studies should clarify the relationship between microcirculatory abnormalities and outcome.

“…11 • During injection sclerotherapy, a small area of the skin around the needle sometimes whitens because of spasm of the feeding arteriole. 11 • During injection sclerotherapy, a small area of the skin around the needle sometimes whitens because of spasm of the feeding arteriole.…”

mentioning

confidence: 99%

Laser-Doppler Examination Shows High Flow in Some Common Telangiectasias of the Lower Limb

Murányi

2005

Dermatologic Surgery

Self Cite

BACKGROUND. The accepted pathophysiology of telangiectasias is reflux from superficial or deep veins. There are physical signs and scientific findings that do not fit this theory but support the possibility of arteriovenous (AV) shunt origin. OBJECTIVE. If there is a higher flow in spider veins than in the surrounding skin, it means that AV shunts participate in the circulation of the telangiectasia. On the other hand, slow flow indicates reflux as the etiologic factor. METHOD. Telangiectasias and the surrounding skin of 22 legs of 19 patients were examined with laser-Doppler equipment. RESULTS. The probe over the spider vein found a higher flow value (average 28.2 perfusion units [PU]) than in the surrounding skin (15.6 PU) in 13 limbs, but it was significantly higher only in 5 cases. In 9 limbs, the flow was slower. CONCLUSION. We interpret the higher flow values as a consequence of open AV shunts. This means that AV shunt pathophysiology was present in some of our cases.