case_images: PMC11385607_01
case_images: (A) The restenosis of right forearm autologous AVF on 23 May 2017. (B) RES. The yellow arrows show the main body of the stent, with a balloon inside it. (C) The ultrasound localization of RES which shows the RES was placed at the site of stenotic lesion. (D) The fully expanded RES, with a patent blood flow.
case_images: fcvm-11-1449989-g001.jpg
case_images: PMC11385607_01_fcvm-11-1449989-g001.jpg
case_images: F1
case_images: Preoperative ultrasonoscopy indicated a significant juxta anastomotic stenosis, with a diameter of 1.0 mm and a length of 1.5 cm (Figure 1A). Then the RES (NOYA, Beijing, China), a balloon-expandable stent with a diameter of 4.5 mm and length of 22 mm, was placed in the stenotic lesion with the guidance of ultrasonography (Figures 1B,C). The stent was closely fitted to the vascular wall, and a color Doppler ultrasound showed filled blood flow through the stent, with a peak velocity of 210 cm/s (Figure 1D).
case_images: (A) The collapsed stent in long-axis view. (B) The collapsed stent in short-axis view, with acceptable blood flow. (C) The guide wire advances through the collapsed stent. (D) The expansion of the collapsed stent using percutaneous transluminal angioplasty.
case_images: fcvm-11-1449989-g002.jpg
case_images: PMC11385607_01_fcvm-11-1449989-g002.jpg
case_images: F2
case_images: Though the flow volume was acceptable, we still decided to expand the stent using PTA (Figure 2).