RT Journal Article SR Electronic T1 Balloon guide catheter improvements in thrombectomy outcomes persist despite advances in intracranial aspiration technology JF Journal of NeuroInterventional Surgery JO J NeuroIntervent Surg FD BMJ Publishing Group Ltd. SP 773 OP 778 DO 10.1136/neurintsurg-2020-017027 VO 13 IS 9 A1 Jordi Blasco A1 Josep Puig A1 Pepus Daunis-i-Estadella A1 Eva González A1 Juan Jose Fondevila Monso A1 Xabier Manso A1 Rafael Oteros A1 Elvira Jimenez-Gomez A1 Isabel Bravo Rey A1 Pedro Vega A1 Eduardo Murias A1 Jose Maria Jimenez A1 Antonio López-Rueda A1 Arturo Renú A1 Sonia Aixut A1 Oscar Chirife Chaparro A1 Santiago Rosati A1 Manuel Moreu A1 Sebastian Remollo A1 Yeray Aguilar Tejedor A1 Mikel Terceño A1 Antonio Mosqueira A1 Raul G Nogueira A1 Luis San Roman YR 2021 UL http://jnis.bmj.com/content/13/9/773.abstract AB Background First-pass effect (FPE) has been established as a key metric for technical success and strongly correlates with better clinical outcomes. Most data supporting improved outcomes with the use of a balloon guide catheter (BGC) predate the advent of last-generation large-bore intracranial aspiration catheters. We aim to evaluate the impact of BGC in FPE and clinical outcomes in a large cohort of patients treated with contemporary technology.Methods Patients were recruited from the prospectively ongoing ROSSETTI registry. This registry includes all consecutive patients with anterior circulation large-vessel occlusion (LVO) from 10 comprehensive stroke centers in Spain. Demographic, clinical, angiographic, and clinical outcome data were compared between BGC and non-BGC groups. FPE was defined as the achievement of mTICI2c–3 after a single device pass.Results 426 patients were included out of which 271 (63.62%) used BCG. BGC-treated patients had higher FPE rate (45.8% vs 27.7%; P<0.001), higher final mTICI ≥2 c recanalization rate (76.8% vs 50.3%, respectively; P<0.001), shorter procedural time [median (IQR), 30 (19–58) vs 43 (33–71) min; P<0.001], higher NIHSS difference from admission to 24 hours [median (IQR), 8 (2–12) vs 3 (0–10); P=0.001], and lower mortality rate (17.6% vs 29.8%, P=0.026) compared with non-BGC patients. BGC use was an independent predictor of FPE (OR 2.197, 95% CI 1.436 to 3.361; P<0.001), and excellent clinical outcome at 3 months (OR 0.34, 95% CI 0.17 to 0.68; P=0.002).Conclusions Our results support the benefit of BGC use on angiographic and clinical outcomes in anterior circulation LVO ischemic stroke remain significant even when considering recent improvements in intracranial aspiration technology.