http://journals.lww.com/neurosurgery/Abstract/publishahead/Treatment_Outcomes_of_Unruptured_Arteriovenous.97826.aspx
Nerva, John D. MD; Mantovani, Alessandra MD; Barber, Jason MS; Kim, Louis J. MD; Rockhill, Jason K. MD, PhD; Hallam, Danial K. MD; Ghodke, Basavaraj V. MD; Sekhar, Laligam N. MD
Supplemental Author Material
Published Ahead-of-Print
BACKGROUND: The design and conclusions of A Randomized
Trial of Unruptured Brain Arteriovenous Malformations (ARUBA) trial are
controversial, and its structure limits analysis of patients who could
potentially benefit from treatment.
OBJECTIVE: To analyze the results of a consecutive series
of patients with unruptured brain arteriovenous malformations (BAVMs),
including a subgroup analysis of ARUBA-eligible patients.
METHODS: One hundred five patients with unruptured BAVMs
were treated over an 8-year period. From this series, 90 adult patients
and a subgroup of 61 patients determined to be ARUBA eligible were
retrospectively reviewed. A subgroup analysis for Spetzler-Martin grades
I/II, III, and IV/V was performed. The modified Rankin Scale was used
to assess functional outcome.
RESULTS: Persistent deficits, modified Rankin Scale score
deterioration, and impaired functional outcome occurred less frequently
in ARUBA-eligible grade I/II patients compared with grade III to V
patients combined (P = .04, P = .04, P = .03, respectively). Twenty-two
of 39 patients (56%) unruptured grade I and II BAVMs were treated with
surgery without and with preoperative embolization, and all had a
modified Rankin Scale score of 0 to 1 at the last follow-up. All
patients treated with surgery without and with preoperative embolization
had radiographic cure at the last follow-up.
CONCLUSION: The results of ARUBA-eligible and unruptured
grade I/II patients overall show that excellent outcomes can be obtained
in this subgroup of patients, especially with surgical management.
Functional outcomes for ARUBA-eligible patients were similar to those of
patients who were randomized to medical management in ARUBA. On the
basis of these data, in appropriately selected patients, we recommend
treatment for low-grade BAVMs.
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