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ISSN: 1895-4588
Videosurgery and Other Miniinvasive Techniques
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4/2016
vol. 11
 
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abstract:
Original paper

Improving the results of transarterial embolization of type 2 endoleaks with the embolic polymer Onyx

Mikolaj Wojtaszek
,
Emilia Wnuk
,
Rafal Maciag
,
Bohdan Solonynko
,
Krzysztof Korzeniowski
,
Krzysztof Lamparski
,
Olgierd Rowinski

Videosurgery Miniinv 2016; 11 (4): 259–267
DOI: https://doi.org/10.5114/wiitm.2016.64747
Online publish date: 2016/12/20
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Introduction: Type 2 endoleaks (T2E) occur in 10 to 20% of patients after endovascular abdominal aortic aneurysm repair (EVAR) and remain a significant clinical issue.

Aim: To evaluate the efficacy and clinical outcomes of transarterial treatment of persistent type II endoleaks after EVAR using the liquid embolic Onyx.

Material and methods From February 2012 to August 2015 transarterial T2E embolization was attempted in 22 patients (21 men, median age: 73, range: 62–88 years). Indications for treatment included an increase in the diameter of the aneurysm sac above 5 mm and a persistent endoleak observed for more than 6 months. Mean time from EVAR to endoleak treatment was 43 months (range: 2–125 months).

Results: Primary technical success was achieved in 17 (77.3%) patients and secondary technical success in 81.8%, with 0% in-hospital mortality. The mean procedure time was 95 ±48 min, with an average fluoroscopy time of 54 ±25 min. The mean amount of Onyx used was 7.5 ±6.6 ml. Clinical success was seen in 17/21 patients with follow-up imaging (80.9%). Mean follow-up time was 17 months (range: 3–38 months).

Conclusions: Onyx has been shown to effectively stabilize previous aneurysm growth as a result of the T2E in the majority of our patients. Transarterial embolization of T2E can be significantly improved as compared to previously reported results by using liquid embolic polymers such as Onyx.
keywords:

endoleak, aortic aneurysm, therapeutic embolization, Onyx copolymer
  
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