Yes: Shunts are provided with a one way valve that is designed to open as needed to allow fluid excess to be redirected into the shunt distribution field rather than allow a build up of pressure.Pressing the shunt bubble allows the examiner to know if the valve is working.
Answered 7/25/2015
4.7k views
VP shunt: Your shunt valve is a reservoir of fluid and some surgeons like to press on it and see how it refills. If there is concern over a shunt failure this test can sometimes be helpful in determining if the shunt is working but not always reliable.
Answered 7/25/2015
4.7k views
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