Procedures
aneurysm, wide-necked aneurysms
SURGICAL COMPLICATIONS, ANEURYSM
All recruited participants performed routine preoperative examinations to reduce surgical complications. All procedures were performed under general anesthesia and via a transfemoral approach. After sheath placement, systematic heparinization was individually administered to maintain an activated clotting time of 250–350 s. Then, appropriate coils were implanted into the aneurysm sac through a microcatheter. It was suggested that the test or control group coil length used in each aneurysm should be more than 50% of the total length. For wide-necked aneurysms, remodeling balloons or stents were recommended as assist devices, excluding flow diverters and covered stents. The antiplatelet and anticoagulation regimens were left to the individual operator, according to the standard of each clinical center. The drug usage of each participant was recorded in detail from preoperatively to 12 months postoperatively.