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Objective: To compare the endovascular treatment results in patients with spinal arteriovenous malformations (AVM) based on the proposed algorithm. Materials and methods: We retrospectively analyzed the endovascular treatment results in 72 patients with various types of spinal AVMs for 2014-2021. We formed 2 main groups of patients based on the developed indications for neurophysiological monitoring and provocative tests (NFM and PT): group 1 (n = 63) was treated according to the algorithm, and group 2 (n = 9) was treated before the algorithm was implemented. Group 1 was divided into subgroup 1.1 (n = 42) including patients with no indications for NFM and PT and subgroup 1.2 (n = 21) with patients indicated for NFM and PT. Subgroup 1.2 was further divided into subsubgroup 1.2A (n = 2) with patients indicated for NFM and PT yet to be informative due to severe neurological deficit and subsubgroup 1.2B (n = 19) with patients that had indications for and successfully underwent NFM and PT. We compared patients between groups 1 and 2, subsubgroup 1.2B and group 2 to evaluate the effectiveness of the algorithm (radical nature of the treatment, functional status assessment, complications). Results: Radical nature of spinal AVM treatment in group 1 was 79 % compared with 44 % in group 2 (P = 0.043). There was a significant improvement in motor function in group 1 compared with group 2 in each follow-up period (Р ≤ 0.007). Comparison of subsubgroup 1.2B and group 2 showed no significant differences (P = .05). The treatment led to complications in 5 patients (7 % of the total number of patients with spinal AVMs): 4 patients in group 2 and 1 patient in subsubgroup 1.2B. The effectiveness of the developed criteria was indirectly confirmed by difference in complications number between subsubgroup 1.2B and group 2 (P = 0.001). Conclusions: Group 1 showed better treatment results, significant clinical improvement, high radical nature of treatment, and a low percentage of complications compared with group 2. The proposed algorithm proved effective for main tasks of endovascular treatment of spinal AVMs.
Objective: To compare the endovascular treatment results in patients with spinal arteriovenous malformations (AVM) based on the proposed algorithm. Materials and methods: We retrospectively analyzed the endovascular treatment results in 72 patients with various types of spinal AVMs for 2014-2021. We formed 2 main groups of patients based on the developed indications for neurophysiological monitoring and provocative tests (NFM and PT): group 1 (n = 63) was treated according to the algorithm, and group 2 (n = 9) was treated before the algorithm was implemented. Group 1 was divided into subgroup 1.1 (n = 42) including patients with no indications for NFM and PT and subgroup 1.2 (n = 21) with patients indicated for NFM and PT. Subgroup 1.2 was further divided into subsubgroup 1.2A (n = 2) with patients indicated for NFM and PT yet to be informative due to severe neurological deficit and subsubgroup 1.2B (n = 19) with patients that had indications for and successfully underwent NFM and PT. We compared patients between groups 1 and 2, subsubgroup 1.2B and group 2 to evaluate the effectiveness of the algorithm (radical nature of the treatment, functional status assessment, complications). Results: Radical nature of spinal AVM treatment in group 1 was 79 % compared with 44 % in group 2 (P = 0.043). There was a significant improvement in motor function in group 1 compared with group 2 in each follow-up period (Р ≤ 0.007). Comparison of subsubgroup 1.2B and group 2 showed no significant differences (P = .05). The treatment led to complications in 5 patients (7 % of the total number of patients with spinal AVMs): 4 patients in group 2 and 1 patient in subsubgroup 1.2B. The effectiveness of the developed criteria was indirectly confirmed by difference in complications number between subsubgroup 1.2B and group 2 (P = 0.001). Conclusions: Group 1 showed better treatment results, significant clinical improvement, high radical nature of treatment, and a low percentage of complications compared with group 2. The proposed algorithm proved effective for main tasks of endovascular treatment of spinal AVMs.
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