title: Outpatient Day-care Neuroangiography and Neurointervention of Unruptured Intracranial Aneurysms.
abstract: OBJECTIVE
  Day-care management of unruptured intracranial aneurysms can shorten hospital stay, reduce medical cost and improve outcome. We present the process, outcome and duration of hospital stay for the management of unruptured intracranial aneurysms via a neurointervention clinic in a single center during the past four years.
  
  
  METHODS
  We analyzed 403 patients who were referred to Neurointervention Clinic at Asan Medical Center for aneurysm evaluation between January 1, 2011 and December 31, 2014. There were 141 (41%) diagnostic catheter angiographies, 202 (59%) neurointerventional procedures and 2 (0.6%) neurointerventional procedures followed by operation. We analyzed the process, outcome of angiography or neurointervention, and duration of hospital stay.
  
  
  RESULTS
  There was no aneurysm in 58 patients who were reported as having an aneurysm in MRA or CTA (14 %). Among 345 patients with aneurysm, there were 283 patients with a single aneurysm (82%) and 62 patients with multiple aneurysms (n=62, 18%). Aneurysm coiling was performed in 202 patients (59%), surgical clipping in 14 patients (4%), coiling followed by clipping in 2 patients (0.6%) and no intervention was required in 127 patients (37%). The hospital stay for diagnostic angiography was less than 6 hours and the mean duration of hospital stay was 2.1 days for neurointervention. There were 4 procedure-related adverse events (2%) including 3 minor and 1 major ischemic strokes.
  
  
  CONCLUSIONS
  Our study revealed that day-care management of unruptured intracranial aneurysms could be performed without an additional risk. It could enable rapid patient flow, shorten hospital stay and thus reduce hospital costs.
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.; Department of Interventional Radiology, Taizhou People's Hospital, Taizhou, Jiangsu Province 225300, P. R. China.
authors.forename: Hairi
authors.initials: H
authors.lastname: Liu
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Danbi
authors.initials: D
authors.lastname: Park
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Sun Moon
authors.initials: SM
authors.lastname: Hwang
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Ga Young
authors.initials: GY
authors.lastname: Lee
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Ok Kyun
authors.initials: OK
authors.lastname: Lim
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Minjae
authors.initials: M
authors.lastname: Kim
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Deok Hee
authors.initials: DH
authors.lastname: Lee
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Wonhyoung
authors.initials: W
authors.lastname: Park
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Hae-Won
authors.initials: HW
authors.lastname: Koo
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Kuhyun
authors.initials: K
authors.lastname: Yang
authors.affiliation: Departments of Radiology and Research Institute of Radiology, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Korea.
authors.forename: Dae Chul
authors.initials: DC
authors.lastname: Suh
keywords: Day-care; Neurointervention; Unruptured intracranial aneurysms