Recent Trends in Neuroendovascular Therapy in Japan: Analysis of a Nationwide survey--Japanese Registry of Neuroendovascular Therapy (JR-NET) 1 and 2

Neurol Med Chir (Tokyo). 2014;54(1):1-8. doi: 10.2176/nmc.oa.2013-0197. Epub 2013 Dec 27.

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.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Aged, 80 and over
  • Angioplasty / statistics & numerical data
  • Brain Damage, Chronic / epidemiology
  • Brain Damage, Chronic / etiology
  • Cerebral Arteries / surgery
  • Cerebrovascular Disorders / surgery*
  • Cerebrovascular Disorders / therapy
  • Embolization, Therapeutic / adverse effects
  • Embolization, Therapeutic / statistics & numerical data
  • Endovascular Procedures / statistics & numerical data
  • Endovascular Procedures / trends*
  • Female
  • Health Care Surveys* / statistics & numerical data
  • Humans
  • Intracranial Aneurysm / surgery
  • Intracranial Arteriovenous Malformations / surgery
  • Intracranial Arteriovenous Malformations / therapy
  • Japan
  • Male
  • Middle Aged
  • Neurosurgical Procedures / statistics & numerical data
  • Neurosurgical Procedures / trends*
  • Postoperative Complications / epidemiology
  • Registries
  • Retrospective Studies
  • Severity of Illness Index
  • Treatment Outcome