Japanese Journal of Radiology

, Volume 31, Issue 9, pp 585–592 | Cite as

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

  • Motoki Nakai
  • Morio Sato
  • Hirotatsu Sato
  • Hinako Sakaguchi
  • Fumihiro Tanaka
  • Akira Ikoma
  • Hiroki Sanda
  • Kouhei Nakata
  • Hiroki Minamiguchi
  • Nobuyuki Kawai
  • Tetsuo Sonomura
  • Yoshiharu Nishimura
  • Yoshitaka Okamura
Original Article
First Online:
Received:
Accepted:

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.

Keywords

Abdominal aortic aneurysm Endovascular aortic aneurysm repair Endoleak Midterm results Adverse events 
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Notes

Conflict of interest

The authors declare that they have no financial interests.

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Copyright information

© Japan Radiological Society 2013

Authors and Affiliations

  • Motoki Nakai
    • 1
  • Morio Sato
    • 1
  • Hirotatsu Sato
    • 1
  • Hinako Sakaguchi
    • 1
  • Fumihiro Tanaka
    • 1
  • Akira Ikoma
    • 1
  • Hiroki Sanda
    • 1
  • Kouhei Nakata
    • 1
  • Hiroki Minamiguchi
    • 1
  • Nobuyuki Kawai
    • 1
  • Tetsuo Sonomura
    • 1
  • Yoshiharu Nishimura
    • 2
  • Yoshitaka Okamura
    • 2
  1. 1.Department of RadiologyWakayama Medical UniversityWakayama-shiJapan
  2. 2.Department of Thoracic and Cardiovascular SurgeryWakayama Medical UniversityWakayama-shiJapan

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