title: Recent trends in neuroendovascular therapy in Japan: analysis of a nationwide survey--Japanese Registry of Neuroendovascular Therapy (JR-NET) 1 and 2.
abstract: The present study retrospectively analyzed the database of the Japanese Registry of Neuroendovascular Therapy 1 and 2 (JR-NET1&2) to determine annual trends, including adverse events and clinical outcomes at 30 days after undergoing neuroendovascular therapy. JR-NET1&2 are surveys that targeted all patients in Japan who underwent neuroendovascular therapy delivered by physicians certified by the Japanese Society of Neuroendovascular Therapy (JSNET) between 2005 and 2009. Medical information about the patients was anonymized and retrospectively registered via a website. Data from 32,608 patients were analyzed. The number of treated patients constantly increased from 5,040 in 2005 to 7,406 in 2009 and the rate of octogenarians increased from 7.0% in 2005 to 10.4% in 2009. The proportion of procedures remained relatively constant, but ratios of angioplasty slightly increased from 32.8% in 2005 to 33.7% in 2009. Procedural complications were associated more frequently with acute stroke (9.6%), ruptured aneurysms (7.4%), intracranial artery disease (ICAD) (5.4%), and arteriovenous malformation (AVM, 5.2%). The number of patients requiring neuroendovascular treatment in Japan is increasing and the outcomes of such therapy are clinically acceptable. Details of each type of treatment will be investigated in sub-analyses of the database.
authors.affiliation: Department of Neurosurgery, Kobe City Medical Center.
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Sakai
authors.forename: Shinichi
authors.initials: S
authors.lastname: Yoshimura
authors.forename: Waro
authors.initials: W
authors.lastname: Taki
authors.forename: Akio
authors.initials: A
authors.lastname: Hyodo
authors.forename: Shigeru
authors.initials: S
authors.lastname: Miyachi
authors.forename: Yoji
authors.initials: Y
authors.lastname: Nagai
authors.forename: Chiaki
authors.initials: C
authors.lastname: Sakai
authors.forename: Tetsu
authors.initials: T
authors.lastname: Satow
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Terada
authors.forename: Masayuki
authors.initials: M
authors.lastname: Ezura
authors.forename: Toshio
authors.initials: T
authors.lastname: Hyogo
authors.forename: Shunji
authors.initials: S
authors.lastname: Matsubara
authors.forename: Kentaro
authors.initials: K
authors.lastname: Hayashi
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Fujinaka
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Ito
authors.forename: Shigeki
authors.initials: S
authors.lastname: Kobayashi
authors.forename: Masaki
authors.initials: M
authors.lastname: Komiyama
authors.forename: Naoya
authors.initials: N
authors.lastname: Kuwayama
authors.forename: Yuji
authors.initials: Y
authors.lastname: Matsumaru
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Matsumoto
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Murayama
authors.forename: Ichiro
authors.initials: I
authors.lastname: Nakahara
authors.forename: Shigeru
authors.initials: S
authors.lastname: Nemoto
authors.forename: Koichi
authors.initials: K
authors.lastname: Satoh
authors.forename: Kenji
authors.initials: K
authors.lastname: Sugiu
authors.forename: Akira
authors.initials: A
authors.lastname: Ishii
authors.forename: Hirotoshi
authors.initials: H
authors.lastname: Imamura
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017130:Angioplasty / Q000706:statistics & numerical data; D001925:Brain Damage, Chronic / Q000453:epidemiology / Q000209:etiology; D002536:Cerebral Arteries / Q000601:surgery; D002561:Cerebrovascular Disorders / Q000601:surgery* / Q000628:therapy; D004621:Embolization, Therapeutic / Q000009:adverse effects / Q000706:statistics & numerical data; D057510:Endovascular Procedures / Q000706:statistics & numerical data / Q000639:trends*; D005260:Female; D019538:Health Care Surveys / Q000706:statistics & numerical data; D006801:Humans; D002532:Intracranial Aneurysm / Q000601:surgery; D002538:Intracranial Arteriovenous Malformations / Q000601:surgery / Q000628:therapy; D007564:Japan; D008297:Male; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000706:statistics & numerical data / Q000639:trends*; D011183:Postoperative Complications / Q000453:epidemiology; D012042:Registries; D012189:Retrospective Studies; D012720:Severity of Illness Index; D016896:Treatment Outcome