Impact factors of subarachnoid hemorrhage after stent embolectomy in acute ischemic stroke / 中国介入影像与治疗学

ABSTRACT

Objective: To explore the impact factors of subarachnoid hemorrhage (SAH) after stent embolectomy in acute ischemic stroke. Methods: Data of 88 patients with middle cerebral artery (MCA) occlusion who underwent stent embolectomy were retrospectively analyzed. The baseline characteristics and clinical data were compared between patients with SAH (SAH group) and non-SAH (non-SAH group) after operation. Results: Stent mechanical thrombectomy was successfully performed in all 88 patients. SAH occurred in 14 cases, while 74 cases were found non-SAH after operation. No significant difference of the baseline characteristics of age, sex, National Institute of Health stroke scale (NIHSS) score, etc, the diameters or length of stent, incidence of vasospasm, the incidence of angioplasty nor modified thrombolysis in cerebral infarction (mTICI) was found between 2 groups (all P>0.05). The number of thrombectomy attempts, stent position along the M2 segment and the top-to-bottom distance (D-TB) of MCA in SAH group were significantly higher than those in non-SAH group (all P<0.05). Conclusion: Tortuous MCA, multiple thrombectomy, M2 segment thrombectomy and stent releasing in M2 segment may increase the risk of SAH after stent thrombectomy in patients with acute cerebral infarction.