Safety and Efficacy Analysis of Stent-assisted Coil Embolization in the Treatment of Acute Ruptured Intracranial Aneurysms in the Perioperative Period.

Inclusion Criteria: * Patients aged 18-80 with a single ruptured cystic aneurysm at the center, or multiple aneurysms with a clear responsible lesion, only treat the responsible lesion * Aneurysms with a wide neck, neck ≥4mm, or neck/body ratio \>1/2 * Treatment performed within 7 days of the last hemorrhage * Patients undergoing interventional treatment using a stent, including cases of remedial stent use.5. Hunt \& Hess grade 1-3 Exclusion Criteria: * Exclude patients who meet the inclusion criteria but fail to undergo successful SAC embolization * Exclude non-cystic aneurysms, such as dissection, pseudoaneurysm, and distal aneurysm patients * Patients with other cerebrovascular diseases, including AVM, DAVF, Moyamoya disease, and arterial stenosis greater than 50% * Patients unable to use intravenous antiplatelet drugs * Patients with poor condition prior to aneurysm rupture, mRS ≥ 2 * Exclude pregnant patients * Exclude patients with other severe preoperative diseases, such as malignant tumors or cardiopulmonary and renal diseases * Patients with multiple aneurysms where the responsible lesion cannot be identified and treatment is done for all