title: Use of 1-ml hollow tube-assisted radial artery catheterization in clinical anesthesiology.
abstract: OBJECTIVE
  To introduce a new modified technique for radial artery catheterization.
  
  
  METHODS
  A prolongated needle was made by using routine Vasocan Braunule needle and 1 ml syringe. A table of random digits was used for randomization of 32 interns. 14 interns were involved in group T and 18 interns were in group M. Each intern accomplished 20 cases. Then 640 patients were divided into 2 groups: group T included 280 patients with traditional direct technique, group M included 360 patients with 1 ml hollow tube-assisted technique.
  
  
  RESULTS
  Satisfactory results were obtained for 107 patients in group T and 292 patients in group M (P < 0.05). The success rates for catheter insertion after one attempt were 38.2% in group T and 81.1% in group M (P < 0.001). The blood flow times for observation were 1.7 ± 0.2 s in group T and 19.6 ± 1.8 s in group M (P < 0.001).
  
  
  CONCLUSIONS
  The authors suggested the use of 1 ml hollow tube-assisted radial artery cannulation technique rather than a direct technique. This modified technique provided easy, safe, quick and less cost cannulation.
authors.affiliation: Department of Anesthesiology, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Yong-Hua
authors.initials: YH
authors.lastname: Li
authors.affiliation: Department of Anesthesiology, Shuguang Hospital, Traditional Chinese Medicine University Shanghai 201203, China.
authors.forename: Yong-Qiang
authors.initials: YQ
authors.lastname: Wang
authors.affiliation: Department of Anesthesiology, Second People's Hospital Pingxiang 337000, Jiangxi Province, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Zeng
authors.affiliation: Department of Anesthesiology, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.affiliation: Department of Anesthesiology, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Li-Ye
authors.initials: LY
authors.lastname: Yang
authors.affiliation: Department of Anesthesiology, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Qiu-Feng
authors.initials: QF
authors.lastname: Zhu
authors.affiliation: Department of Anesthesiology, Changzheng Hospital, Second Military Medical University Shanghai 200003, China.
authors.forename: Hai-Long
authors.initials: HL
authors.lastname: Fu
keywords: 1-ml hollow tube; Radial artery catheterization; modified