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12.09.2018 | Original Article

Perioperative factors associated with aneurysm sac size changes after endovascular aneurysm repair

Zeitschrift:
Surgery Today
Autoren:
Daijiro Hori, Yohei Nomura, Taketo Yamauchi, Hiroshi Furuhata, Harunobu Matsumoto, Naoyuki Kimura, Koichi Yuri, Atsushi Yamaguchi

Abstract

Purpose

To identify the perioperative factors associated with aneurysm size changes after endovascular aortic aneurysm repair (EVAR).

Methods

Between August, 2008 and December, 2014, 187 patients underwent EVAR treatment in our institution. The subjects of this study were 135 of these patients without peripheral artery disease, who were followed up with computed tomography (CT) for 3 years. Significant aneurysm size change was defined as sac size change of more than 5 mm from the baseline.

Results

Sac enlargement was identified in 25 patients (18.5%) and sac shrinkage was identified in 59 (43.7%) patients. The factors associated with sac enlargement were postoperative pulse wave velocity (OR: odds ratio 3.80, p = 0.047), prevalence of a type 2 endoleak 1 week after surgery (OR 4.26, p = 0.022), inner diameter (OR 1.10, p = 0.005), and distance from the lower renal artery to the terminal aorta (OR 1.05, p = 0.017). The factors associated with sac shrinkage were prevalence of a type 2 endoleak (OR 0.09, p < 0.001) and preoperative pulse wave velocity (OR 0.32, p = 0.022). The factors independently associated with type 2 endoleak were the use of an Excluder device (OR 3.99, p = 0.002) and the length of the aneurysm (OR 1.02, p = 0.027).

Conclusion

Inner diameter, treatment length, perioperative pulse wave velocity, and type 2 endoleak were associated with sac size changes after EVAR.

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