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Midterm results of endovascular abdominal aortic aneurysm repair: comparison of instruction-for-use (IFU) cases and non-IFU cases

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Abstract

Purpose

To investigate the midterm results of abdominal aortic aneurysm repair (EVAR) and compare the endoleak (EL) and abdominal aortic aneurysm (AAA) prognoses between instruction-for-use (IFU) patients and non-IFU patients.

Materials and methods

Of 124 patients (104 men, 20 women; mean age 76.2 years; age range 58–93 years) with AAA who underwent EVAR with the Zenith (68 patients) or Excluder device (56) and were analyzed, 86 were IFU and 38 non-IFU.

Results

The mean absorbed dose of radiation exposure was 1907 mGy in the IFU group and 2283 mGy in the non-IFU group (p = 0.013). Thirty-five patients experienced EL: 8 (6.5 %) type I and 27 (21.8 %) type II. Type I ELs were observed in 3 patients in the IFU group (3.5 %) and 5 patients in the non-IFU group (13.2 %). Of the 14 patients with AAA diameter expansion of ≥5 mm, 6 (6/86, 7.0 %) belonged to the IFU group and 8 (8/38, 21.1 %) to the non-IFU group (p = 0.027).

Conclusion

The frequency of AAA expansion ≥5 mm was higher in non-IFU patients than in IFU patients. Therefore, careful follow-up is necessary for non-IFU patients rather than IFU patients.

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Conflict of interest

The authors declare that they have no financial interests.

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Authors and Affiliations

  1. Department of Radiology, Wakayama Medical University, 811-1 Kimiidera, Wakayama-shi, Wakayama, 641-8510, Japan

    Motoki Nakai, Morio Sato, Hirotatsu Sato, Hinako Sakaguchi, Fumihiro Tanaka, Akira Ikoma, Hiroki Sanda, Kouhei Nakata, Hiroki Minamiguchi, Nobuyuki Kawai & Tetsuo Sonomura

  2. Department of Thoracic and Cardiovascular Surgery, Wakayama Medical University, 811-1 Kimiidera, Wakayama-shi, Wakayama, 641-8510, Japan

    Yoshiharu Nishimura & Yoshitaka Okamura

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  1. Motoki Nakai
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Correspondence to Morio Sato.

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Nakai, M., Sato, M., Sato, H. et al. Midterm results of endovascular abdominal aortic aneurysm repair: comparison of instruction-for-use (IFU) cases and non-IFU cases. Jpn J Radiol 31, 585–592 (2013). https://doi.org/10.1007/s11604-013-0223-7

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  • DOI: https://doi.org/10.1007/s11604-013-0223-7

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