| Co-Investigator(Kenkyū-buntansha) |
KUBO Michiya University of Toyama, Faculty of Medicine, Assistant Professor, 大学院医学薬学研究部, 助手 (10234486)
ENDO Shunro University of Toyama, Faculty of Medicine, Professor, 大学院医学薬学研究部, 教授 (70125269)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2006: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2005: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Research Abstract |
We conducted the nationwide surgery on the present status of the treatment of dural AV fistulas (dAVF) in Japan. The questionnaires were sent to all of 388 neurointerventionalists (268 clinics) certified by the Japanese Society of Neuroendovascular Therapy to ask the patients dermography and details of treatment between 05 January and 06 December. The clinical data of 863 patients were reported by 92 clinics. 45% of the patients were men and 55% were women. Patients' mean age was 64.0+/-13.2 years. The cavernous sinus (CS) was involved in 396 patients(45.9%), the transverse-sigmoid sinus (TSS) in 230 (26.7%), the spinal cord in 51 (5.9%), the anterior condylar confluence (ACC) in 43 (5.0%), the tentorium in 41 (4.8%), the superior sagittal sinus in 28(3.2%), the craniocervical junction (CCJ) in 21 (2.4%), the cranial vault in 21 (2.4%), the anterior cranial base (ACB) in 18 (2.1%), and the confluence of the sinus in 12 (1.4%). 719 (83%) patients were treated with endovascular method, 61(7%) with surgical method, and 37(4%) with radiosurgical method. The radiological results were complete obliteration in 66% of the patients, subtotal in 17%, partial in 11%. Treatment complications were reported in 4.1% of the patients. The mean modified Rankin Scale was 1.4 before, and 0.6 after treatment. The results of the treatment of the CS and TSS lesions were acceptable and satisfactory. The analysis of the complications reported suggested the endovascular treatment sometimes tended to be selected inappropriately in the ACB and CCJ lesions.
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