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Embolic complications after endovascular repair of abdominal aortic aneurysms

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Abstract

Purpose

This retrospective study aimed to review our experiences with endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms (AAAs), along with the incidence, risk factors and prognoses of associated embolic events. Our goal was to present the EVAR results and related risk factors from a single center, with a focus on embolic complications.

Methods

We retrospectively reviewed the data of 539 patients with AAAs who underwent elective EVAR at Jikei University from July 2006 to April 2009. Of these, 438 patients were selected after excluding those requiring fenestrated and branched EVAR.

Results

The technical success rate was 91.1 % (399/438) with no surgical mortality. Embolic complications occurred in nine patients (2 %), four of whom developed ischemic colitis and were successfully treated with bowel rest and hydration. Lower extremity atheroembolization and stroke occurred in three and one patients, respectively. Two patients died of cholesterol crystal embolization. Seven of the nine embolic complications (77.8 %) were associated with the use of Zenith stent-grafts. A Cox proportional-hazard regression analysis of the adjusted risk factors showed that smoking and severe arterial degeneration of the aorta, referred to as a shaggy aorta, to be independent predictors of embolic complications.

Conclusions

The presence of a shaggy aorta and a history of smoking are independent predictors of embolic complications associated with EVAR.

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Conflict of interest

Naoki Toya and the co-authors have no conflicts of interest to declare.

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Authors and Affiliations

  1. Division of Vascular Surgery, Department of Surgery, Jikei University Kashiwa Hospital, 163-1 Kashiwashita, Kashiwa, Chiba, 277-8567, Japan

    Naoki Toya

  2. Division of Vascular Surgery, Department of Surgery, Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minato-ku, Tokyo, 105-8461, Japan

    Takeshi Baba, Yuji Kanaoka & Takao Ohki

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  1. Naoki Toya
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  2. Takeshi Baba
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  3. Yuji Kanaoka
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  4. Takao Ohki
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Correspondence to Naoki Toya.

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Toya, N., Baba, T., Kanaoka, Y. et al. Embolic complications after endovascular repair of abdominal aortic aneurysms. Surg Today 44, 1893–1899 (2014). https://doi.org/10.1007/s00595-013-0795-y

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