Thursday, 21 April 2016

?ONYX

Q.All are true regarding ONYX except
a. non-adhesive liquid embolic agent
b cosists of  ethyl-vinyl alcohol polymer (EVOH)
c. dimethyl sulfoxide  (DMSO) used as solvent
d. tantalum used to make it radiopaque
e. it solidifies mor than rapidly NBCA

ANS .---e


Onyx is a new non-adhesive liquid embolic agent which consists of  a mixture of ethyl-vinyl alcohol polymer (EVOH), dimethyl sul-occlufoxide (DMSO) as a solvent and tantalum to render it radiopaque. In contrast to NBCA, it solidifies slowly, minimises the danger of insitu gluing of a microcatheter. Onyx has been used for cerebral arteriovenous malformations (AVMS) and giant cerebral aneurysms in which other forms of endovascular or surgical treatment are difficult

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