EDAS
Contents
In brief: EDAS stands for encephaloduroarteriosynangiosis. It is an indirect procedure that places a branch of the superficial temporal artery, with surrounding tissue, against the brain surface.
Use in moyamoya disease
Section titled “Use in moyamoya disease”The artery remains connected to its normal blood supply. Over time, new small vessels may grow from this donor tissue into the cerebral circulation. EDAS does not create the immediate artery-to-artery flow of a direct bypass.
EDAS is used alone or as part of a combined operation, particularly in pediatric practice. The time and degree of collateral formation vary, so early protection and later imaging follow-up remain important. [1]
Clinical detail
Section titled “Clinical detail”The acronym is sometimes used loosely for related indirect techniques. Operative details determine whether dura, arachnoid, muscle, periosteum, or additional openings were incorporated.