RT Journal Article SR Electronic T1 Clinical relevance of intracranial hemorrhage after thrombectomy versus medical management for large core infarct: a secondary analysis of the SELECT2 randomized trial JF Journal of NeuroInterventional Surgery JO J NeuroIntervent Surg FD BMJ Publishing Group Ltd. SP 120 OP 127 DO 10.1136/jnis-2023-021219 VO 17 IS 2 A1 Chen, Michael A1 Joshi, Krishna C A1 Kolb, Bradley A1 Sitton, Clark W A1 Pujara, Deep Kiritbhai A1 Abraham, Michael G A1 Ortega-Gutierrez, Santiago A1 Kasner, Scott E A1 Hussain, Shazam M A1 Churilov, Leonid A1 Blackburn, Spiros A1 Sundararajan, Sophia A1 Hu, Yin C A1 Herial, Nabeel A1 Arenillas, Juan F A1 Tsai, Jenny P A1 Budzik, Ronald F A1 Hicks, William A1 Kozak, Osman A1 Yan, Bernard A1 Cordato, Dennis A1 Manning, Nathan W A1 Parsons, Mark A1 Hanel, Ricardo A A1 Aghaebrahim, Amin A1 Wu, Teddy A1 Cardona Portela, Pere A1 Gandhi, Chirag D A1 Al-Mufti, Fawaz A1 Perez de la Ossa, Natalia A1 Schaafsma, Joanna A1 Blasco, Jordi A1 Sangha, Navdeep A1 Warach, Steven A1 Kleinig, Timothy J A1 Johns, Hannah A1 Shaker, Faris A1 Abdulrazzak, Mohammad A A1 Ray, Abhishek A1 Sunshine, Jeffery A1 Opaskar, Amanda A1 Duncan, Kelsey R A1 Xiong, Wei A1 Al-Shaibi, Faisal K A1 Samaniego, Edgar A A1 Nguyen, Thanh N A1 Fifi, Johanna T A1 Tjoumakaris, Stavropoula I A1 Jabbour, Pascal A1 Mendes Pereira, Vitor A1 Lansberg, Maarten G A1 Sila, Cathy A1 Bambakidis, Nicholas C A1 Davis, Stephen A1 Wechsler, Lawrence A1 Albers, Gregory W A1 Grotta, James C A1 Ribo, Marc A1 Hassan, Ameer E A1 Campbell, Bruce A1 Hill, Michael D A1 Sarraj, Amrou YR 2025 UL http://jnis.bmj.com/content/17/2/120.abstract AB Background The incidence of intracerebral hemorrhage (ICH) and its effect on the outcomes after endovascular thrombectomy (EVT) for patients with large core infarcts have not been well-characterized.Methods SELECT2 trial follow-up imaging was evaluated using the Heidelberg Bleeding Classification (HBC) to define hemorrhage grade. The association of ICH with clinical outcomes and treatment effect was examined.Results Of 351 included patients, 194 (55%) and 189 (54%) demonstrated intracranial and intracerebral hemorrhage, respectively, with a higher incidence in EVT (134 (75%) and 130 (73%)) versus medical management (MM) (60 (35%) and 59 (34%), both P<0.001). Hemorrhagic infarction type 1 (HBC=1a) and type 2 (HBC=1b) accounted for 93% of all hemorrhages. Parenchymal hematoma (PH) type 1 (HBC=1c) and type 2 (HBC=2) were observed in 1 (0.6%) EVT-treated and 4 (2.2%) MM patients. Symptomatic ICH (sICH) (SITS-MOST definition) was seen in 0.6% EVT patients and 1.2% MM patients. No trend for ICH with core volumes (P=0.10) or Alberta Stroke Program Early CT Score (ASPECTS) (P=0.74) was observed. Among EVT patients, the presence of any ICH did not worsen clinical outcome (modified Rankin Scale (mRS) at 90 days: 4 (3–6) vs 4 (3–6); adjusted generalized OR 1.00, 95% CI 0.68 to 1.47, P>0.99) or modify EVT treatment effect (Pinteraction=0.77).Conclusions ICH was present in 75% of the EVT population, but PH or sICH were infrequent. The presence of any ICH did not worsen functional outcomes or modify EVT treatment effect at 90-day follow-up. The high rate of hemorrhages overall still represents an opportunity for adjunctive therapies in EVT patients with a large ischemic core.The individual patient data will not be made available. After a written request to the corresponding author is reviewed and approved by the steering committee, statistical codes and outputs will be made available for the purpose of reproducing results.