ABSTRACT
Evaluation of Shunt Function There are a number of ways to evaluate shunt function and ensure that antegrade flow is present. The simplest is application of a hand-held Doppler probe to the shunt tubing. The audible flow signal, although faint, has confirmed patency in every case in my experience. Shunt function can also be ascertained by various monitoring techniques, and I anticipate that the EEG or similar monitoring technique will return to baseline after satisfactory placement of an indwelling shunt. TCD velocities are also expected to improve to at least 50% or more of their baseline values with proper placement of a shunt.
