The ETCHES I Study (Endovascular Treatment of Communicating Hydrocephalus With an Endovascular Shunt)

Exclusion Criteria

• •1. Patient is in a state of unconsciousness or is unable to understand the information provided in the Informed Consent Form for this study
• •2. Indication of obstructive hydrocephalus
• •3. Presence of gross blood in CSF from EVD
• •4. Pregnant
• •5. Unwilling or unable to comply with follow up requirements
• •6. Active systemic infection or infection detected in CSF
• •7. Life expectancy \< 1 year
• •8. Hypersensitivity or contraindication to heparin or radiographic contrast agents which cannot be adequately pre-medicated, desensitized or where no alternative is available
• •9. Occlusion or stenosis of the internal jugular vein
• •10. Venous distension in the neck on physical exam
• •11. Atrial septal defect or patent foramen ovale identified on cardiac echocardiogram
• •12. History of bleeding diatheses, coagulopathy or will refuse blood transfusion in cases of emergency
• •13. Clearly antecedent stroke unrelated to post-aneurysmal SAH
• •14. Patient is currently participating in another investigational drug or device trial that could conflict with study data collection or follow-up
• •15. Other medical illnesses that may cause the patient to be non-compliant with the protocol or confound data interpretation as determined by the study Investigator
• •16. Presence of a deep vein thrombosis superior to the popliteal segment of the femoral vein
• •17. International Normalized Ratio (INR) or Partial Thromboplastin Time (PTT) results outside of normal range (INR 0.8-1.4; PTT 25-35 secs.)