Does the unruptured intracranial aneurysm treated score (UIATS) have a high risk of rupture threshold? (P2.293)

Objective: By comparing the UIATS score among patients with ruptured aneurysms with the score among those patients with unruptured aneurysms. Determine if the score a priory would have been substantially different indicating a higher risk in those presenting with subarachnoid hemorrhage (SAH) Background: Unruptured Intracranial Aneurysms (UIA) occur in about 3% of the adult population and are often detected incidentally on imaging. The appropriate approach to manage patients with UIA’s remains disputable given the multiple factors influencing the natural history, risk of rupture in comparison to the risks of interventions Design/Methods: We report a retrospective single-center study of patients treated at the Texas Tech Hospital , El Paso between 2011 to 2016 . Medical records of 198 patients were reviewed and 87 patients were found to have aneurysms in the Basilar artery bifurcation, Vertebral/Basilar artery and Anterior & Posterior communicating arteries that fit the UIATS criteria. We then calculated the UIATS score among those with SAH and compared them with those with an unruptured aneurysm. Results: Out of 87 patients, 36 (41.4%) were diagnosed with unruptured aneurysms and 51 (58.6%) with ruptured. 34 patients in the unruptured group underwent invasive procedures and 2 were managed conservatively. The mean age for the unruptured versus ruptured aneurysms (58.89 ± 12.17 versus 57.12 ± 14.02, p-value 0.542). The mean score for the unruptured vs ruptured aneurysms was similar(22.97 ± 4.28 vs 21.23 ± 4.80, p-value 0.086). Interestingly, the mean score of those in the unruptured group was lower among those treated as compared to those in observation (22.83 ± 4.35 vs 27.50 ± 2.12, p-value 0.148). Conclusions: Based on these findings, the role of UIATS score in stratifying patients for conservative vs interventional treatment is questionable Disclosure: Dr. Qureshi has nothing to disclose. Dr. Collins has nothing to disclose. Dr. Qureshi has nothing to disclose. Dr. Afzal has nothing to disclose. Dr. Khatri has nothing to disclose. Dr. Maud has nothing to disclose. Dr. Cruz-Flores has nothing to disclose. Dr. Rodriguez has nothing to disclose. Dr. Piriyawat has nothing to disclose.