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  • Title: Functional prognosis after treatment of spinal dural arteriovenous fistulas.
    Author: Ushikoshi S, Hida K, Kikuchi Y, Miyasaka K, Iwasaki T, Abe H.
    Journal: Neurol Med Chir (Tokyo); 1999 Mar; 39(3):206-12; discussion 212-3. PubMed ID: 10344109.
    Abstract:
    Functional prognosis after treatment for spinal dural arteriovenous fistulas (SDAVFs) was retrospectively analyzed in 13 consecutive patients aged 38 to 73 years (mean 57 years) treated during the last 5 years. The duration of symptoms before diagnosis ranged from 3 to 72 months (mean 23 months). Neurological symptoms were examined before and 6 months after the treatment. Seven patients underwent embolization as the initial treatment. In four of six patients, N-butyl 2-cyanoacrylate (NBCA) embolization achieved complete obliteration of SDAVF. The other two patients with incomplete embolization and one embolized with polyvinyl alcohol particles underwent subsequent surgical treatment. Six patients were treated by direct surgery. Complete disappearance of SDAVF was confirmed in all nine patients treated surgically. Improvement of gait and micturition disturbance after the treatment was noted in six of 10 and three of six patients, respectively. Long duration of symptoms and high grade of neurological symptoms were associated with a poor functional outcome. NBCA embolization and surgery are curative treatments for SDAVF, but the functional prognosis is not always satisfactory. Embolization is the first choice of treatment for SDAVF because it is less invasive and relatively safe. However, when complete obliteration is not achieved, prompt surgery is recommended because a long duration of symptoms will result in a poor functional prognosis.
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