title: A randomised controlled trial of radial artery cannulation guided by Doppler vs. palpation vs. ultrasound.
abstract: We randomly allocated 749 participants to radial artery cannulation by anaesthetic trainees, guided by Doppler (244), palpation (256) or ultrasound (249). Ultrasound increased the rate of cannulation at the first attempt by 14% (95% CI 5-22%), from 39% with Doppler or palpation, p = 0.002 for both. There were no differences in the rates of cannulation 5 min after the procedure started: 147/244 (60%) with Doppler; 160/256 (63%) with palpation; and 171/249 (69%) with ultrasound, p = 0.13.
authors: Department of Anesthesia, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa, USA.
authors: K
authors: K
authors: Ueda
authors: Department of Anesthesia, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa, USA.
authors: E O
authors: EO
authors: Bayman
authors: Anesthesia Associates of Great Falls, Great Falls, Montana, USA.
authors: C
authors: C
authors: Johnson
authors: Little Rock Medical Associates IV, Little Rock, Arkansas, USA.
authors: N J
authors: NJ
authors: Odum
authors: Department of Anesthesiology, Yale University School of Medicine, New Haven, Connecticut, USA.
authors: J Jy
authors: JJ
authors: Lee
mesh_terms: D002406:Catheterization, Peripheral / Q000379:methods* / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D010173:Palpation / Q000379:methods* / Q000706:statistics & numerical data; D017534:Radial Artery / Q000000981:diagnostic imaging*; D018608:Ultrasonography, Doppler / Q000379:methods* / Q000706:statistics & numerical data; D018084:Ultrasonography, Interventional / Q000379:methods* / Q000706:statistics & numerical data