肝移植术后肝动脉狭窄的介入治疗七例

目的评价介入技术治疗原位肝移植后肝动脉狭窄(HAS)的效果。方法对原位肝移植术后发生HAS的7例患者进行介入治疗,4例于移植术后7~20d发生肝脏缺血并发症,3例于移植术后3~6d发生HAS。介入治疗方法有肝动脉内留置导管持续给予低剂量尿激酶进行溶栓和肝动脉内支架置入术。结果3例为肝动脉吻合口狭窄,狭窄程度>70%;4例为肝固有动脉完全阻塞,经肝动脉内留置导管溶栓3~7d后开通,但均存在肝动脉吻合口狭窄,狭窄程度>90%。7例肝动脉内置入支架均成功,术后2周肝功能明显改善,未发生与介入治疗相关的并发症。术后随访4~18个月,一般情况良好,超声波复查,显示肝动脉血流通畅。结论血管内支架置入术是治疗原位肝移植后HAS的一种安全、有效的方法。

Interventional radiological techniques in the management of hepatic artery stenosis after liver transplantation

Objective To evaluate the safety and efficacy of the interventional techniques for the management of hepatic artery stenosis (HAS) after orthotopic liver transplantation (OLT).Methods Seven patients diagnosed with HAS after OLT were treated with interventional procedures. Three (patients) presented with biliary ischemic complications, 1 with hepatic abscess, and 3 with elevation of liver enzymes and bilirubin levels. Interventional techniques included transcatheter hepatic arterial thrombolysis with a low dose of urokinase (UK), and stent placement in the stenotic segment of the hepatic artery. All patients were followed up regularly by duplex ultrasound scan after discharge.(Results) HAS with over 70 % degree at the anastomosis was found in 3 patients. Complete occlusion of the proper hepatic artery was found in 4 patients, and the hepatic artery flow was re-established in these patients at 3 to 7 days after transcatheter hepatic arterial thrombolysis. However, an over 90 % degree of stenosis at the anastomosis was seen in 4 cases. Stent placement in the stenotic segment of the hepatic artery was performed successfully in 7 patients, and significant improvement of liver (function) was seen in these patients at 2 weeks after the procedures. No complications related to the procedure occurred. The 7 patients had a good clinical course with normal graft function during a mean follow-up of 9 months (4 to 18 months), and patent hepatic artery flow was identified by follow-up Doppler ultrasonography.Conclusion Transcatheter endovascular interventional techniques are safe and effective methods for treatment of HAS after OLT.