Abstract：
Preservation of a vascular access is crucial in the management of hemodialysis patients. In this regard, percutaneous transluminal angioplasty (PTA) is an effective tool if performed after an adequate understanding of preliminary fistulograms. The present case showed a chronic dysfunction of a radial-cephalic arteriovenous fistula (AVF) due to arterial occlusion and partially relieved by the spontaneous development of multiple small arteriovenous connections in the palmar region of the hand. This dense network had been so far able to ensure a sufficient retrograde blood flow for an effective hemodialytic performance. The angioplasty of the post-anastomotic stenotic segment of the radial artery was effective in restoring this neoformed AVF patency.
摘要：
血管通路的保存在血液透析患者的管理中是至关重要的。在这方面,经皮腔内血管成形术（PTA）是一种有效的工具。本病例显示，由于动脉闭塞，radial头动静脉瘘（AVF）的慢性功能障碍，并且由于手部手掌区域多个小动静脉连接的自发发展而部分缓解。到目前为止，这种密集的网络已经能够确保足够的逆行血流，以实现有效的血液透析性能。桡动脉吻合后狭窄段的血管成形术可有效恢复这种新形成的AVF通畅性。
