Yes I have two VP shunts since 1996 and two revisions. Reason for second was cause the valve stopped working in first and had bad leak so they did a y attachment shunt.
I have never heard of someone having two shunts. Have docs done everything to regulate pressure from #1? As you probably know, besides the possible risk from surgery, you'll also be suseptible of infection at the site of the shunt.
Keep up the research and best wishes!
Still looking ...?Cath278