Introduction

We invite ISPN & IFNE membership to contribute to this survey.

Following a technically successful ETV, sagittal MRI scans (T2, flow studies) are expected to demonstrate a flow void (F/V) signal through the stoma.
In an asymptomatic patient and no flow on postop MRI, the question remains if the patient is at risk for developing symptoms, including sudden death, and therefore should the patient be “prophylactically” treated (redo ETV vs. a shunt).
This international survey focuses on the treatment options in an asymptomatic patient, following a technically successful ETV in the absence of a F/V on sagittal T2 sequences on follow up scans.
In this category we will include:
  1. Patients with no F/V following the ETV.
  2. Patients with disappearance of a prior F/V.