摘要目的 探讨手术治疗椎动脉-小脑后下动脉梭形动脉瘤的方法.方法 回顾性分析2007年12月至2010年2月收治的5例椎动脉-小脑后下动脉梭形动脉瘤患者的临床特点、手术方法及疗效.5例患者均为男性,年龄40～55岁,平均47岁.其中动脉瘤破裂出血4例,1例表现为后枕部阵发性头痛.所有患者均采用远外侧入路,翻开皮肌瓣后,先于枕部肌群内分离枕动脉,开颅后显露同侧小脑后下动脉尾襻,并于此处行枕动脉-小脑后下动脉吻合重建小脑后下动脉血流,再行动脉瘤孤立术或切除术.术后进行随访,观察疗效.结果 5例患者术后1例无神经功能缺失;3例有后组脑神经功能障碍;1例出现颅内血肿,二次手术后并发对侧肢体偏瘫.行数字减影血管造影或CT血管造影检查,吻合口通畅,动脉瘤不显影.随访2～29个月,平均18个月,4例预后良好,1例对侧肢体轻偏瘫.结论 枕动脉-小脑后下动脉搭桥+动脉瘤孤立或切除术是治疗椎动脉-小脑后下动脉梭形动脉瘤的有效方法,但需结合实际情况,选择个体化的治疗方案.

abstractsObjective To study an effective method for vertebral artery-posterior inferior cerebellar artery (VA-PICA) dissecting aneurysms. Methods Five patients with VA-PICA dissecting aneurysms were treated surgically between December 2007 and February 2010, who were all males, aged from 40 to 55 years. Four of them presented with subarachnoid hemorrhage (SAH), 1 of them suffered from an intermittent headache on occipital area about 4 months. All the aneurysms were trapped via a far-lateral approach after revascularization of the PICAs by occipital artery- posterior inferior cerebellar artery (OA-PICA)bypass. Results Among the 5 patients, 1 of them got a good outcome without any neurological deficit after surgery, 3 of them had postoperative lower cranial nerve palsy, 1 of them complicated with bleeding in the operative field after postoperative antithrombotic treatment, and suffered from contralateral hemiplegy after second surgery of removing hemotoma. Postoperative cerebral angiographies (received by 2 patients) and CT angiographies ( received by 3 patients) all showed patent bypasses and no filling of the aneurysms. During the follow-up from 2 to 29 months, 4 patients got good outcomes, 1 patient still suffered from moderate hemiplegy. Conclusions Trapping the aneurysms after revascularization of PICA by OA-PICA bypass should be an effective method to treat the VA-PICA dissecting aneurysms, but individualized strategies also need to be considered based on different cases.