title: Prevalence of transradial coronary angiography and intervention in China: report from the Transradial coronary intervention Registration Investigation in China (TRI-China).
abstract: OBJECTIVE
  To investigate the prevalence of TRA and TRI in China in the years 2006 and 2007.
  
  
  METHODS
  About 400 TRI-China questionnaires were sent to hospitals all over China from February to May in 2007 and 2008.
  
  
  RESULTS
  Data was collected from 163 and 111 hospitals all over China in the year 2006 and 2007, respectively. A total of 108,658 CAG and 45,176 PCI cases in 2006 and 115,124 CAG and 48,379 PCI cases in 2007 were enrolled in the study. There were more TRA and TRI in 2007 than 2006 (TRA, 60.23% vs. 47.84%, p<0.001; TRI, 56.28%vs. 44.69%, p<0.001). Judkin's and MP (multipurpose) were the major catheter types during TRA in 2006 and 2007 (Judkin's, 47.62% vs. 40.52%; MP, 41.23% vs. 40.38%). TRI could be completed through 6 French GC in the majority of cases (85.49% in 2006 vs. 93.13% in 2007). Unfractionated heparin (UFH) was the major anticoagulant during TRA and TRI (88.76% in 2006 vs. 99.10% in 2007,). Nitroglycerine (NTG) was the major vasodilator to prevent radial artery spasm (75.80% in 2006 vs. 92.79% in 2007).
  
  
  CONCLUSIONS
  Transradial approach has become the primary access of CAG and PCI in China.
authors.affiliation: Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China. Electronic address: trichina2007@126.com.
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing, 100037, China.
authors.forename: Yuejin
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Department of Cardiology, Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
authors.forename: Yujie
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Department of Cardiology, Anzhen Hospital, Capital Medical University, Beijing, 100029, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Xu
authors.affiliation: Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Zhao
mesh_terms: D002681:China / Q000453:epidemiology; D017023:Coronary Angiography / Q000295:instrumentation / Q000379:methods*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000601:surgery; D006801:Humans; D015995:Prevalence; D017534:Radial Artery / Q000000981:diagnostic imaging* / Q000601:surgery; D011795:Surveys and Questionnaires