Journal of Chest Surgery

The Korean Society for Thoracic and Cardiovascular Surgery (대한심장혈관흉부외과학회)
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Surgical Treatment for Occlusion of Graft Arteriovenous Fistula in Patients Undergoing Hemodialysis

  • Noh, Tae Ook (Department of Thoracic and Cardiovascular Surgery, Dankook University College of Medicine) ;
  • Chang, Sung-Wook (Department of Thoracic and Cardiovascular Surgery, Dankook University College of Medicine) ;
  • Ryu, Kyoung Min (Department of Thoracic and Cardiovascular Surgery, Dankook University College of Medicine) ;
  • Ryu, Jae Wook (Department of Thoracic and Cardiovascular Surgery, Dankook University College of Medicine)
  • Received : 2014.08.20
  • Accepted : 2014.10.08
  • Published : 2015.02.05
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Abstract

Background: Maintenance of adequate vascular access for hemodialysis is important in patients with end-stage renal disease. Once arteriovenous fistula (AVF) occlusion occurs, the patient should be treated with rescue therapy. This study was performed to evaluate the results of a rescue therapy for AVF occlusion. Methods: From January 2008 to December 2012, 47 patients who underwent surgical rescue therapy for AVF occlusion after graft AVF formation, were enrolled in this study. The patients were divided into two groups, namely the graft repair group (group A, n=19) and the thrombectomy group (group B, n=28). Postoperative results of both groups were analyzed retrospectively. Results: There were no statistically significant differences in the clinical characteristics between the two groups. In terms of the duration of AVF patency after the first rescue therapy, group A showed a longer AVF patency duration than group B ($24.5{\pm}21.9$ months versus $17.7{\pm}13.6$ months), but there was no statistically significant difference (p=0.310). In terms of the annual frequency of AVF occlusion after the rescue therapy of group A was lower than that of group B (0.59 versus 0.71), but there was no statistically significant difference (p=0.540). The AVF patency rates at 1, 2, 3, and 5 years after the first rescue therapy in group A were 52.6%, 31.5%, 21.0%, and 15.7%, respectively, and those in group B, they were 32.1%, 25.0%, 17.8%, and 7.14%, respectively. There was no statistically significant difference (p=0.402). Conclusion: Graft repair revealed comparable results. Although there was no statistically significant difference, the patent duration and annual frequency of AVF occlusion of group A were better than those of group B. Therefore, graft repair is considered as a safe and useful procedure for maintaining graft AVF.

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References

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