Conrad W Liang1, Harjyot J Toor1,2, Evelin Duran Martinez3, Sunil A Sheth4, Kuo Chao5, Lei Feng5, Mazen Noufal1, Binh V Nguyen6, Pankaj J Mowji6, Navdeep Sangha7. 1. Department of Neurosurgery, Fontana Medical Center, Fontana, CA. 2. Neurosurgery Residency Program, Arrowhead Regional Medical Center, Colton, CA. 3. Pomona College, Claremont, CA. 4. Department of Neurology, UTHealth McGovern Medical School, Houston, TX. 5. Department of Radiology, Los Angeles Medical Center, Los Angeles, CA. 6. Department of Radiology, Anaheim Medical Center, Anaheim, CA. 7. Department of Neurology, Los Angeles Medical Center, Los Angeles, CA.
Abstract
CONTEXT: New stroke thrombectomy devices have significantly improved recanalization rates in patients with large vessel occlusion. The first pass effect, or complete or near complete recanalization after a single pass of a device, is associated with better outcome. However, it remains unclear whether one technique is superior to the others at first pass recanalization. OBJECTIVE: The successful recanalization rates of three common techniques: 1) Stent-retriever with the Solitaire or 2) Trevo device, or 3) primary aspiration (PA) with a distal aspiration catheter, were compared across three Kaiser Permanente Southern California Medical Centers over a 5-year period. DESIGN: Retrospective review of cases between October 2013 and May 2018. MAIN OUTCOME MEASURE: Successful recanalization after a single pass of a device. RESULTS: Forty-five percent of Solitaire thrombectomies resulted in first pass success, compared with 31% of Trevo and 39% of PA, not statistically significant (p = 0.26). Adjusted for age, gender, and National Institutes of Health Stroke Scale score, the odds of successful recanalization were 1.90 ± 0.72 (CI 0.90-3.99, p = 0.09) for Solitaire compared with Trevo, and 1.41 ± 0.50 (CI 0.70-2.84, p = 0.33) for aspiration compared with Trevo. CONCLUSION: In this multi-center cohort, there was no statistical difference in successful first pass recanalization between Solitaire, Trevo, and PA. However, there was a trend towards improved efficacy with the Solitaire device compared to Trevo (OR 1.90, p = 0.09). Additional data are needed to determine the conditions under which design differences may favor one technique over another.
CONTEXT: New stroke thrombectomy devices have significantly improved recanalization rates in patients with large vessel occlusion. The first pass effect, or complete or near complete recanalization after a single pass of a device, is associated with better outcome. However, it remains unclear whether one technique is superior to the others at first pass recanalization. OBJECTIVE: The successful recanalization rates of three common techniques: 1) Stent-retriever with the Solitaire or 2) Trevo device, or 3) primary aspiration (PA) with a distal aspiration catheter, were compared across three Kaiser Permanente Southern California Medical Centers over a 5-year period. DESIGN: Retrospective review of cases between October 2013 and May 2018. MAIN OUTCOME MEASURE: Successful recanalization after a single pass of a device. RESULTS: Forty-five percent of Solitaire thrombectomies resulted in first pass success, compared with 31% of Trevo and 39% of PA, not statistically significant (p = 0.26). Adjusted for age, gender, and National Institutes of Health Stroke Scale score, the odds of successful recanalization were 1.90 ± 0.72 (CI 0.90-3.99, p = 0.09) for Solitaire compared with Trevo, and 1.41 ± 0.50 (CI 0.70-2.84, p = 0.33) for aspiration compared with Trevo. CONCLUSION: In this multi-center cohort, there was no statistical difference in successful first pass recanalization between Solitaire, Trevo, and PA. However, there was a trend towards improved efficacy with the Solitaire device compared to Trevo (OR 1.90, p = 0.09). Additional data are needed to determine the conditions under which design differences may favor one technique over another.
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