大脑前动脉近端动脉瘤的显微外科治疗

目的探讨大脑前动脉近端动脉瘤(A1动脉瘤)的临床特征及外科手术技巧。方法1995年6月～2003年12月间共治疗颅内动脉瘤患者362例,其中A1动脉瘤占2．2％(8例),对A1动脉瘤患者的临床资料进行回顾性分析。结果所有动脉瘤均位于A1穿动脉的起始部,起源于内侧远端纹状体动脉的3例,内侧近端纹状体动脉的5例。术中发现后方指向的6例,下方指向的2例。8个动脉瘤均为囊性动脉瘤,其中6例为小动脉瘤,平均直径6．9mm。全组动脉瘤经手术夹闭,患者预后优7例,良1例。结论手术治疗A1动脉瘤保护A1穿动脉和选用合适的瘤夹是预防缺血性并发症的关键。

Microsurgical treatment of proximal anterior cerebral artery aneurysms

Objective To explore clinic characteristics of proximal anterior cerebral artery aneurysms and analyzed operative techniques. Methods A review was performed of a total of 362 patients whose aneurysms were surgically treated from June 1995 to December 2003, the morbidity of A 1 aneurysms was 2.2% . To reviewed clinical data of 8 proximal anterior cerebral artery aneurysms patients. Results All of the aneurysms developed at the takeoff point of perforating arteries, the recurrent artery of Heubner in three cases, the medial proximal lenticulostriate artery in five cases. Six cases aneurysms projected posteriorly, two cases projected inferiorly in the surgical field. The shape of the aneurysms was saccular in all cases and diameter no larger than 5mm in six cases. Patients were clipped satisfactorily, excellent condition in 7 patient, good condition in one. Conclusion It is important to preserve the perforating arteries and use suitable clip by avoiding cerebral ischemia.