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P.051 Validation of the unruptured intracranial aneurysm treatment score against “real-world” MDT decisions

  • H Godbout (a1), J Jarrett (a1) and GE Pickett (a1)

Abstract

Background: Intracranial aneurysms are relatively common and often incidentally detected. Elective treatment may eliminate the risk of future hemorrhage, but carries risks of permanent deficit or death. Case-control studies have suggested factors predisposing to aneurysm rupture as well as risks of elective aneurysm repair. A clinical tool was recently developed to weigh benefits of repair against treatment risks. We evaluate its performance against real-world clinical decisions made by a cerebrovascular multidisciplinary team (MDT). Methods: Chart review of all patients with unruptured intracranial berry aneurysms (UIA) discussed at cerebrovascular MDT rounds 2008-2015. Management decisions and clinical outcomes were recorded. The Unruptured Intracranial Aneurysm Treatment Score (UIATS) was calculated for each patient (each aneurysm in the case of multiple UIA). Results: We identified 240 patients with a total of 279 aneurysms. UIATS recommended aneurysm repair in 79 cases, conservative management in 88 cases, and was equivocal in 112 cases. Where the UIATS gave a clear decision, that decision was concordant with the MDT decision in 119/167 cases (71%). Discordant decisions often related to the presence of comorbidities. Clinical outcomes did not differ in cases where the recommendations were clearly concordant vs. discordant. Conclusions: The UIATS may provide guidance to non-expert clinicians. It did not outperform the MDT.

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P.051 Validation of the unruptured intracranial aneurysm treatment score against “real-world” MDT decisions

  • H Godbout (a1), J Jarrett (a1) and GE Pickett (a1)

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