Journal
DERMATOLOGIC SURGERY
Volume 38, Issue 5, Pages 741-747Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1111/j.1524-4725.2012.02390.x
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Background Foam sclerotherapy has been proven to be a safe and effective treatment for superficial venous insufficiency, but transient visual and neurologic disturbances continue to be reported. These side effects have been theorized to be related to the presence of air or gases in the sclerosing foam that results in bubble migration into the cerebral circulation. We present a differing hypothesis that significant amounts of endothelin are released from the treated veins, amounts capable of causing these complications. Material and Methods We tested the release of endothelin 1 (ET-1) in 12 rats after sclerotherapy with sodium tetradecyl sulfate (STS) in liquid and foam preparations. In 11 human subjects, we measured ET-1 in systemic circulation and in a draining vein after foam sclerotherapy with polidocanol. Results Rats treated with STS showed a significant increase in ET-1 levels 1 and 5 minutes after foam sclerotherapy. Patients treated with foam sclerotherapy showed a marked increase in ET-1 levels that correlated significantly with local ET-1 levels. Conclusions Evidence of ET-1 release represents a plausible relationship explaining neurologic and visual disturbances reported after sclerotherapy.
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