The endolymphatic shunt drains to the mastoid.

michelle.white@memorialhosp.org

The sigmoid sinus is then collapsed with gentle pressure. The surgeon exposes the endolymphatic sac and makes an incision in it in order to insert the shunt.

a surgical procedure in which a very small silicone tube is placed in the membranous labyrinth of the inner ear to drain excess fluid

In this procedure, the surgeon inserts a small tube or valve to drain excess endolymph fluid into a space near the mastoid bone and/or removes some of the bone surrounding the endolymphatic sac in order to reduce pressure on it