ventriculoatriostomy

ven·tric·u·lo·atri·os·to·my -.ā-trē-'äs-tə-mē n, pl -mies surgical establishment of a shunt to drain cerebrospinal fluid (as in hydrocephalus) from a ventricle of the brain to the right atrium

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n.

an operation for the relief of raised pressure due to the build-up of cerebrospinal fluid that occurs in hydrocephalus. Using a system of catheters, the fluid is drained into the jugular vein in the neck.

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ven·tric·u·lo·atri·os·to·my (ven-trik″u-lo-a″tre-osґtə-me) ventriculoatrial shunt.