When a VP shunt has been inserted and the headaches and papilledema persist and the pressure in the shunt is still elevated, the primary concern would be that the shunt is malfunctioning. Revision of the shunt, or
insertion of a new one, is sometimes necessary. While I do not know the exact statistics of success of a second shunt, and I can not advise you for or against another shunt, in general, failure of one shunt does not necessarily imply failure of the second one.