ShuntCheck Performance Characteristics in Asymptomatic Pseudotumor Cerebri Patients

Assessment of ShuntCheck Performance Characteristics in Asymptomatic Patients With Pseudotumor Cerebri

The purpose of the study is to determine if the ShuntCheck test can correctly identify flow or no flow in a ventriculoperitoneal shunt in patients with pseudotumor cerebri.

The purpose of the study is to determine if the ShuntCheck test can correctly identify flow or no flow in a ventriculoperitoneal shunt in patients with pseudotumor cerebri.

Flow may be limited due to slit ventricles

Inclusion Criteria:

• 18 years old or older Adult men or women who possess a VP shunt placed for PTC;
• Capable of providing valid signed informed consent, or has a legal guardian, health care agent, or surrogate decision maker (according to local statutes, and collectively referred to as "surrogates" in this protocol) capable of providing valid, signed informed consent;
• Subjects will be asymptomatic visiting for routine care at 2-4 weeks post op

Exclusion Criteria:

• Presence of multiple shunts, or presence of more than one distal shunt catheter (regardless of function) crossing the clavicle ipsilateral to the shunt with suspected obstruction;
• ShuntCheck test would interfere with standard patient care, or emergency shunt surgery that cannot be delayed is indicated;
• Presence of an interfering open wound or edema over any portion of the VP shunt.