Neurologia medico-chirurgica
Online ISSN : 1349-8029
Print ISSN : 0470-8105
Special Theme Topic: Japanese Surveillance of Neuroendovascular Therapy in JR-NET/JR-NET2—Part I
Recent Trends in Neuroendovascular Therapy in Japan: Analysis of a Nationwide Survey—Japanese Registry of Neuroendovascular Therapy (JR-NET) 1 and 2
Nobuyuki SAKAIShinichi YOSHIMURAWaro TAKIAkio HYODOShigeru MIYACHIYoji NAGAIChiaki SAKAITetsu SATOWTomoaki TERADAMasayuki EZURAToshio HYOGOShunji MATSUBARAKentaro HAYASHIToshiyuki FUJINAKAYasushi ITOShigeki KOBAYASHIMasaki KOMIYAMANaoya KUWAYAMAYuji MATSUMARUYasushi MATSUMOTOYuichi MURAYAMAIchiro NAKAHARAShigeru NEMOTOKoichi SATOHKenji SUGIUAkira ISHIIHirotoshi IMAMURAJapanese Registry of Neuroendovascular Therapy (JR-NET) Investigators
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2014 Volume 54 Issue 1 Pages 1-8


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.

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