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Database of Abstracts of Reviews of Effects (DARE): Quality-assessed Reviews [Internet]. York (UK): Centre for Reviews and Dissemination (UK); 1995-.

Database of Abstracts of Reviews of Effects (DARE): Quality-assessed Reviews.

Impact of long-term warfarin treatment on EVAR durability: a meta-analysis

Review published: 2014.

Bibliographic details: Lazarides MK, Georgiadis GS, Charalampidis DG, Antoniou GA, Georgakarakos EI, Trellopoulos G.  Impact of long-term warfarin treatment on EVAR durability: a meta-analysis. Journal of Endovascular Therapy 2014; 21(1): 148-153. [PubMed: 24502496]

Abstract

PURPOSE: To evaluate whether postoperative long-term oral anticoagulation affects the durability of endovascular aneurysm repair (EVAR) and whether it is associated with an increased incidence of endoleak and subsequent need for reintervention.

METHODS: A literature search was performed to identify studies of abdominal aortic aneurysm patients undergoing EVAR including an arm receiving warfarin postoperatively and reporting the frequency of any endoleaks and/or persistent type II endoleaks and reinterventions. The search identified 81 articles, of which 5 observational cohort studies ultimately met the inclusion criteria.

RESULTS: Postoperative anticoagulation was required in 219 (14.6%) of the 1499 patients in the selected studies. The pooled effects analysis found that EVAR patients receiving long-term warfarin postoperatively had significantly more endoleaks of any type (OR 1.77, 95% CI 1.26 to 2.48, p=0.001) as well as persistent type II endoleaks (OR 1.58, 95% CI 1.05 to 2.37, p=0.03) compared with patients not on anticoagulation; however, there was no statistically significant difference in the reintervention rate between the groups.

CONCLUSION: Long-term anticoagulation in EVAR patients was associated with a statistically significant increase in any endoleak and persisting type II endoleaks, although it was not linked to an increased risk of reintervention. Close monitoring for EVAR patients who require long-term oral anticoagulation is advised.

CRD has determined that this article meets the DARE scientific quality criteria for a systematic review.

Copyright © 2014 University of York.

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