[Coil embolization of arteriovenous fistulae on in situ saphenous vein bypasses: success rate and complications].
OBJECTIVE
To determine the success and complication rate of coil embolization of arteriovenous fistulae on in situ saphenous vein bypasses.


METHODS
82 AV-fistulae on 30 bypasses (28 patients, 20 men, age 62.5 +/- 8.3 years) were treated using coils. The success rate, complications, duration, amount of contrast material and radiation exposure were measured. Color-coded duplex sonography was performed 1 - 2 days and up to 6 - 18 months after embolization.


RESULTS
The success rate was 68.3 %. The reasons for persistent fistula perfusion were: 96 % fistula not accessible, 4 % reperfusion during thrombolysis. 7 complications were observed in 6 bypasses: failure of placement and retrieving of coil (n = 4), thrombembolic complications with thrombolysis (n = 3). The duration of intervention was 118.3 +/- 46.6 min, the contrast material need was 277.03 +/- 94.0 ml, and the radiation exposure was 10 966 +/- 11 295 cGy/cm (2). Additional balloon dilatation was performed in 30 % of the bypasses. All bypasses were open 1-2 days after intervention. During follow-up, 11 persistent fistulae were detected.


CONCLUSIONS
Coil-embolization of arteriovenous fistulae on saphena magna bypasses proved to be a method with moderate success and complication rates.
Krüger
K
K
Institut und Poliklinik für Radiologische Diagnostik, Klinikum der Universität zu Köln. Karsten.Krueger@vivantes.de
Wagner
D
D
Gawenda
M
M
Strohe
D
D
Uedelhoven
J
J
Brunkwall
J
J
Lackner
K
K
D001164:Arteriovenous Fistula / Q000473:pathology / Q000628:therapy*; D004621:Embolization, Therapeutic / Q000009:adverse effects / Q000379:methods*; D005263:Femoral Artery; D006801:Humans; D008279:Magnetic Resonance Imaging; D011150:Popliteal Artery; D011152:Popliteal Vein; D012189:Retrospective Studies; D012501:Saphenous Vein; D016896:Treatment Outcome; D014654:Vascular Patency