RESUMO
An elderly gentleman with primary sclerosing cholangitis (PSC) was admitted with rectal bleeding, shown on flexible sigmoidoscopy to be arising from rectal varices, which bled despite endoscopic therapy with histoacryl glue. Therapeutic options were limited with surgery and transjugular intrahepatic portosystemic shunt deemed too high risk, and endovascular embolisation through interventional radiology was sought. Coil-assisted retrograde transvenous obliteration was used to good effect. This rare approach has advantages over balloon occlusion, avoiding long indwelling balloon time and risk of rupture or infection, as well as time efficiency.
RESUMO
PURPOSE: To compare the double mesh nitinol stent (DNS) versus the self-expanding stent-graft (SES) in recurrent/resistant cephalic vein arch stenosis in dialysis fistulae. MATERIALS AND METHODS: 17 cases with recurrent/resistant stenosis of the cephalic vein arch treated with a DNS were compared retrospectively with 18 cases treated with an SES. Stenting was performed either for significant recoil post-angioplasty with high-pressure balloons or in recurrent stenoses. Patients were followed up with Doppler ultrasound in our vascular access surveillance programme. Primary and assisted primary patency rates at 3, 6 and 12 months were estimated by Kaplan-Meier analysis. RESULTS: Both stents showed 100% technical success immediately post-stenting, defined as residual stenosis < 30%. 3, 6 and 12 month primary patency of the DNS was 82.4%, 69.7% and 28.1% versus 88.9%, 77.8% and 72.2% for the SES. The DNS had a mean primary patency of 242.4 days compared to 896.3 days for the SES (p = 0.021). 12 month assisted primary patency was 88.2% (DNS) and 100% (SES). The DNS had a mean assisted primary patency of 812 days compared to 1390.3 days for the SES, though this did not reach statistical significance. No stent fractures were identified at 2 years in either group. CONCLUSION: Both stents had 100% technical success with no stent fractures. SES showed statistically significant higher primary patency. Assisted primary patency was also higher, though this did not reach statistical significance.