Residual stenosis after conventional balloon angioplasty for hemodialysis shunt failure: treatment with metallic stent placement and post-balloon dilatation.
OBJECTIVE
The usefulness of metallic stent placement and post-balloon dilatation was investigated for patients with residual stenosis after conventional percutaneous transluminal balloon angioplasty (balloon PTA) of dialysis shunt vessels.


METHODS
Among 92 patients who had received balloon PTA for dialysis shunt vessels, seven patients who showed a residual waist on the balloon even under maximum inflation were enrolled in this study. In these patients with residual stenosis after balloon PTA, we inserted a stent in the residual stenosis, and post-balloon dilatation was immediately applied using the same balloon catheter.


RESULTS
After balloon PTA, the average percent diameter stenosis declined to 45.5 +/- 7.30%, and the stenosis was further improved to an average of 19.3 +/- 7.09% after the placement of a stent and the additional balloon PTA. The average percent diameter dilatation of the balloon before the placement of a stent was 65.8 +/- 12.7%, while the average dilatation increased to 84.1 +/- 8.96% after the placement of a stent. Dialysis became possible immediately after the procedure in all cases.


CONCLUSIONS
Metallic stent placement and post-balloon dilatation was effective for patients with residual stenosis after conventional balloon PTA of dialysis shunt vessels.
Kariya
Shuji
S
Department of Radiology, Kansai Medical University, Osaka, Japan.
Tanigawa
Noboru
N
Kojima
Hiroyuki
H
Komemushi
Atsushi
A
Shiraishi
Tomokuni
T
Kawanaka
Toshiaki
T
Sawada
Satoshi
S
D000368:Aged; D000369:Aged, 80 and over; D000800:Angioplasty, Balloon; D001166:Arteriovenous Shunt, Surgical; D002404:Catheterization; D005260:Female; D006083:Graft Occlusion, Vascular / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D006435:Renal Dialysis / Q000295:instrumentation; D015607:Stents; D017211:Treatment Failure; D016896:Treatment Outcome; D014654:Vascular Patency