Abstract
Forty-six patients with malfunctioning hemodialysis access fistulas were treated with balloon angioplasty. The initial percutaneous transluminal angioplasty procedure was successful in 16 (89%) of 18 patients with stenoses and in 13 (46%) of 28 with occlusions. In ten patients (seven with stenoses and three with occlusions) repeated dilation (two to five times; mean, two times) became necessary due to recurrent malfunction 1-24 months (mean, 6 months) after the first intervention. In the 16 patients with stenoses, the patency rate after 6 months was 93%; after 1 year, 91%; and after 2 years, 57%. In the 12 patients with occlusions, the rates were 80%, 50%, and 14%, respectively. Dilation of stenoses in malfunctioning hemodialysis fistulas is the procedure of choice. If hemodialysis shunts malfunction, immediate dilation of stenotic lesions should be performed to prevent occlusion.
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