The patient baseline characteristics, the anatomical structure of vascular access, medical history, procedure-related time points, stroke severity, recanalization devices, number of mechanical thrombectomy attempts, need for rescue therapy and 3-month follow-up data were collected. The degree of vessel occlusion before and after treatment was defined by the extended Thrombolysis in Cerebral Infarction (eTICI) classification, and a postoperative eTICI score 2c/3 was defined as successful recanalization of the vessel. The NIHSS score was used to determine the level of neurological severity (ranges from 0 to 42, with higher scores indicating a greater degree of severity), and improvements of at least 4 points on the NIHSS score within 24 h or at discharge than that of admission were considered short-term neurological improvement. The modified Rankin Scale (mRS) was used to assess neurological recovery at 90 days postoperative, and mRS score of 0 to 2 was defined as favorable neurological recovery. All patients were reexamined by head CT or MRI scan within 24 h after the operation to determine whether intracranial hemorrhage occurred, and symptomatic intracerebral hemorrhage (sICH) was defined as the presence of hemorrhage after the procedure, with worsening of clinical examination by ≥4 points on the NIHSS.
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