Department of Clinical Engineering, University of Liverpool, Liverpool, UK.
Eur J Vasc Endovasc Surg. 2011 Sep;42 Suppl 1:S48-54. doi: 10.1016/j.ejvs.2011.06.023.
The radiocephalic arteriovenous fistula remains the method of choice for haemodialysis access. In order to assess their suitability for fistula formation, the radial arteries and cephalic veins were examined preoperatively by ultrasound colour flow scanner in conjunction with a pulse-generated run-off system. Intraoperative blood flow was measured after construction of the fistulae. Post-operative follow-up was performed at various intervals to monitor the development of the fistulae. Radial artery and cephalic vein diameter less than 1.6 mm was associated with early fistula failure. The intraoperative fistula blood flow did not correlate with the outcome of the operation probably due to vessel spasm from manipulation. However, blood flow velocities measured non-invasively 1 day after the operation were significantly lower in fistulae that failed early compared with those that were adequate for haemodialysis. Most of the increase in fistula diameter and blood flow occur within the first 2 weeks of surgery.
头臂动脉动静脉瘘仍然是血液透析通路的首选方法。为了评估其适合形成瘘管的能力，在术前使用彩色超声血流扫描仪结合脉冲生成的流出系统检查桡动脉和头静脉。在瘘管形成后测量术中的血流量。在不同的时间间隔进行术后随访，以监测瘘管的发展情况。桡动脉和头静脉直径小于 1.6 毫米与早期瘘管失败有关。术中瘘管血流量与手术结果无关，可能是由于操作引起的血管痉挛。然而，术后 1 天无创测量的血流速度在早期失败的瘘管中明显低于适合血液透析的瘘管。瘘管直径和血流量的大部分增加发生在手术的前 2 周内。
