Anatomical Features and Early Outcomes of Endovascular Repair of Abdominal Aortic Aneurysm from a Korean Multicenter Registry.
OBJECTIVE
To introduce a nation-based endovascular aneurysm repair (EVAR) registry in South Korea and to analyze the anatomical features and early clinical outcomes of abdominal aortic aneurysms (AAA) in patients who underwent EVAR.


METHODS
The Korean EVAR registry (KER) was a template-based online registry developed and established in 2009. The KER recruited 389 patients who underwent EVAR from 13 medical centers in South Korea from January 2010 to June 2010. We retrospectively reviewed the anatomic features and 30-day clinical outcomes.


RESULTS
Initial deployment without open conversion was achieved in all cases and procedure-related 30-day mortality rate was 1.9%. Anatomic features showed the following variables: proximal aortic neck angle 48.8±25.7° (mean±standard deviation), vertical neck length 35.0±17.2 mm, aneurysmal sac diameter 57.2±14.2 mm, common iliac artery (CIA) involvement in 218 (56.3%) patients, and median right CIA length 34.9 mm. Two hundred and nineteen (56.3%) patients showed neck calcification, 98 patients (25.2%) had neck thrombus, and the inferior mesenteric arteries of 91 patients (23.4%) were occluded.


CONCLUSIONS
Anatomical features of AAA in patients from the KER were characterized as having angulated proximal neck, tortuous iliac artery, and a higher rate of CIA involvement. Long-term follow-up and ongoing studies are required.
Division of Vascular Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Hyunwook
H
Kwon
Department of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
Do Yun
DY
Lee
Department of Surgery, Chonnam National University, Gwangju, Korea.
Soo Jin Na
SJ
Choi
Division of Vascular Surgery, Department of Surgery, Catholic University of Daegu College of Medicine, Daegu, Korea.
Ki Hyuk
KH
Park
Department of Surgery, Seoul National University College of Medicine, Seoul, Korea.
Seung-Kee
SK
Min
Department of Surgery, Chosun University College of Medicine, Gwangju, Korea.
Jeong-Hwan
JH
Chang
Division of Transplantation and Vascular Surgery, Department of Surgery, Kyungpook National University Hospital, Daegu, Korea.
Seung
S
Huh
Department of Radiology, Inha University College of Medicine, Incheon, Korea.
Yong Sun
YS
Jeon
Department of Radiology, Ajou University School of Medicine, Suwon, Korea.
Jehwan
J
Won
Division of Transplantation and Vascular Surgery, Department of Surgery, Wonkwang University College of Medicine, Iksan, Korea.
Seung Jae
SJ
Byun
Department of Surgery, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
Sang Jun
SJ
Park
Department of Surgery, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea.
Lee Chan
LC
Jang
Division of Vascular Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Tae-Won
TW
Kwon
Abdominal aortic aneurysm; Anatomy; Endovascular aneurysm repair; Korean endovascular aneurysm repair registry